Topic: Excretory System
Aim: Cite specific textual evidence to describe
parts & functions of the Excretory System.
Do
1.
2.
3.
Now:
Take out your Excretion ISA.
Copy the topic and aim into your notes.
Tape the Digestive System Review ISA into your
notebook.
HW: Digestive System Review ISA
Castle Learning Digestive and Circulatory Systems
due Tuesday, February 23rd.
Nasal cavity
Nose
Trachea
Pharynx
Epiglottis
Larynx
Bronchus
Bronchioles
Diaphragm
This system
represents the
excretory system.
1. Describe excretion.
Removal of metabolic
wastes.
2. Identify some
metabolic wastes.
CO2, water, urea,
salts
Identify an excretory
organ in the diagram.
Skin
Lungs
Liver
Kidneys
Process A
Process B
Lungs • Exhale CO2 and H2O vapor
Skin
• Sweat glands releases
PERSPIRATION
• Sweat: water, salts and urea
• Regulates your body temperature
– Prevents overheating
Did you know…
• An average person sheds
from about 40000 skin cells
every minute.
Liver
• Filters nitrogen out of your
blood  UREA
• DETOXIFIES the blood (removes toxins such
as drugs and alcohol)
https://www.youtube.com/watch?v=FSprnYACYJI
Did you know…
• A liver would be about 3 pounds in
an average human and it is rubbery
to touch.
Kidneys • Filter out urea from your
blood
• Regulate the amount of water in
your blood.
• Contains nephrons
• Produce URINE
–Water, salt and urea
Did you know…
• If you eat a lot of red
beets, your urine will
actually be colored red.
Urinary • Kidneys
System
• Ureters
• Urinary bladder
http://www.youtube.com/watch?v=uAy5C2YYlbk
• Urethra
Did you know…
•The average person pees about
3000 times a year.
• The average person passes 9,202
gallons of urine in his/her lifetime.
That’s enough to fill 315 bathtubs.
•
Let’s summarize…Identify the structure.
1. Excrete carbon dioxide and water vapor. Lungs
2. Produces urea. Liver
3. Regulates body temperature. Skin
4. Stores urine. Urinary bladder
5. Filters urea from the blood. Kidneys
6. Excretes water, salts and a small amount of urea.
7. Carries urine from the kidneys to the urinary
bladder. Ureters
8. Regulates the amount of water and other
substances in the blood. Kidneys
9. Transports urine out of the body. Ureters
10. Produces urine. Kidneys
11. Detoxifies the blood. Liver
Skin
1.Identify A, B,
and D.
Lungs
Liver
2.Which organ
produces urea? Urea
3.What is the function
Filter urea from the
of D?
blood.
4.What does organ A
excrete? CO2, H2O
Kidney 5.Which
organ
detoxifies the blood?
Liver
1. Identify structures A, B, C,
and D.
2. Which structure produces
Kidney urine? Kidneys
Ureter
Urinary
bladder
Urethra
3. What is the path of urine?
Kidney, ureters, urinary
bladder, urethra
4. What are the 2 main
functions of A?
Filter the blood
Regulate the amount of H2O in blood.
5. What stores urine? Urinary bladder
6. What is the function of D?
Transport urine out of body.
Bronchioles
11.
15.
Alveolus
14.
12.
Alveoli
Capillary
Aorta
Superior
Vena Cava
Right
atrium
Pulmonary arteries
Pulmonary veins
Left atrium
Left ventricle
Inferior
Vena Cava
Right ventricle
Valve
X Y
1. Identify the structure
in the diagram. alveolus
2. What process
occurs in thisgas
structure? exchange
3. Identify the blood
vessel surrounding
this structure. capillary
4. Identify gas X. O2
5. Identify gas Y. CO2
6. Identify the process
that causes the
movement of gases.
diffusion