3.4.6 The Excretory System in
the Human 1
Follow-Me – iQuiz
Q. What is meant by the term excretion?
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. State the role of the kidneys in homeostasis.
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. What tube/structure connects the kidney to the bladder?
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. Explain the term plasma.
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. Explain why red blood cells are normally absent from
glomerular filtrate.
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. Urea is an excretory product. Name a substance from which it
is derived.
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. Where in the human kidney does re-absorption take place?
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. Name the blood vessel that supplies blood to a kidney.
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. In which cavity of the body are the kidneys located?
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. Name one substance, other than water, excreted in the urine.
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. Why is glucose normally absent from urine?
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. Give a feature of the kidney which indicates that it is an
exocrine gland.
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. Mention one method of excretion in flowering plants.
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. Name the tube/structure that delivers urine outside the body.
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. Explain the term glomerular filtrate.
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. Carbon dioxide is an excretory product. Name a substance
from which it is derived.
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. What is the source of the heat that keeps the body at a fairly
constant temperature?
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. From which blood vessel does the renal artery arise?
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. The concentration of glucose is the same in plasma and
glomerular filtrate. Why is this?
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. State two responses that result when body temperature
begins to drop.
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. State two ways in which the body is insulated against loss of
heat.
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. Describe the ways in which the body responds when its
internal temperature rises above the normal level.
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. Explain briefly how sweating assists in the shedding of excess
heat
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
CONGRATULATIONS
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Q. What is an endotherm?
Has ducts; Does not
produce hormones
Respiration
Animal that produces its own
body heat; Body temp
independent of environment temp
Liquid part of the blood
Aorta
Maintaining water/salt
balance; Osmoregulation
Film of H2O on body surface,
heated by the body; water
evaporates with the heat,
body left cooler
Carbohydrate; Fat; Fatty
acids
Piloerection; Vasoconstriction;
Brain initiates increased
metabolic rate
Urea; Salt; Uric acid
Diffusion; Transpiration;
Through lenticels or stomata;
Leaf fall
Plasma that has entered
Bowman’s capsule
Ureter
Elimination of waste
products of metabolism
Protein; Amino acid
Urethra
Fat/Adipose tissue;
Trapped air/Hair
Proximal convoluted
tubule
Usually reabsorbed
Glucose is small and
passes through
Renal artery
Vasodilation; Sweat secretion;
Hairs lie flat, less air trapped
Abdominal; Abdomen
Too big to pass into
Bowman’s capsule
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