LEARNING GOALS: HOMEOSTASIS
Monday: HOLIDAY (Victoria Day)
Thursday and following Tuesday; Slide show
Today I will:
1. Define homeostasis.
2. Differentiate between negative and positive feedback mechanisms, give examples of each, and state
the importance of negative feedback to homeostasis.
3. Explain the body’s various responses to heat or cold stress in order to maintain homeostasis or
constant internal body temperature.
4. Use flow charts to map out a negative feedback system
Page 337 #2,48
Page 340 #1,2, 5  10
Wednesday; Slide show
Today I will:
1. Detail how adrenaline (an amino acid derivative), and cortisol (a steroid hormone) are stimulated by
the nervous system and endocrine system respectively to cause the “fight or flight” response in
humans.
2. Understand the mechanism by which a “peptide” vs. a “steroid” hormone elicit a response from the
target cell at a cellular level.
3. Describe how each target (skeletal muscles, liver, heart, lungs, digestive tract, eyes, skin) responds
to the stress hormones and why this is a necessary response. Handout- concept map of targets
Thursday; Independent Work Handout
Today I will:
1. Identify the structures of the urinary system and trace the path of wastes through these structures.
2. State the importance of the urinary system. (removing nitrogenous wastes)
3. Label a more detailed diagram of the kidney and the functional unit of the kidney the nephron.
Friday: MUSTANG DAY
Monday;
Today I will:
1. State the functions of the kidney. (Regulate water and salt balance and thus blood pressure,
remove nitrogenous wastes, regulate pH balance)
2. Distinguish between the terms filtration, reabsorption, and secretion as they occur in the kidney.
3. Dissect, draw, and label the structures of a pig kidney. (trace blood flow in (waste rich) and out
(waste poor) and urine flow out.)
DIAGRAMS ARE DUE ON WEDNESDAY
Tuesday: Video and downloaded clips
Today I will:
1. Review transport mechanisms such as osmosis, facilitated transport, and active transport that are
essential during the reabsorption and secretion phases of urine formation in the nephron.
2. Draw and explain how each of the regions of the nephron are important to the formation of urine.
3. Demonstrate comprehension of how hormones (aldosterone and ADH) affect re-absorption in the
nephron to maintain water and salt balance by analyzing case studies and using flow charts to
illustrate the negative feedback mechanisms.
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Wednesday: Slide show
Today I will:
1. Describe the causes, types, diagnosis, and treatment of kidney stones.
2. Describe how insulin and glucagon act as antagonistic hormones to control blood glucose levels.
3. Explain the impact of diabetes upon urine content.
4. Describe the contributions of Canadian scientists Fredrick Banting and Charles Best to our
understanding and treatment of diabetes.
Page 356 #1 5, 7, 9, 10
Page 362 #1,2,3,5,6,7
Recipe for Urine:
36.4 g of urea, 1.5 L of distilled water, 15.0g of NaCl, 9.0 g of
KCl, 9.6 g of Na3PO4.
Mix until clear and add NaOH or HCl to adjust to desired pH.
Use coffee to give colour and nutty odour, acetone for
ketones, dextrose for sugar, albumen for protein, and blood
meal or blood from butchers for blood.
Thursday
Today I will:
1. Conduct urinalysis on five urine samples. Handout- Lab
2. Use the observed physical and chemical properties of each urine sample plus case study information
to diagnose the medical condition of each patient.
3. Review the human male and female reproductive anatomy. Handout – diagrams and charts
LAB DUE NEXT TUESDAY
Friday Slide show if desired
Today I will:
1. Describe the source, target, and effect of reproductive hormones in males. (only negative feedback)
2. Describe the source, target, and effect of reproductive hormones in females. Handout – graphs of
hormones levels and diagram of sequence of events in the ovary and uterus
3. Explain how both negative and positive feedback mechanisms lead to fluctuation in hormone levels
in females.
4. Apply a knowledge of female reproductive hormones to understanding birth control medications.
WORKSHEET TO COMPLETE Handout
+ REVIEW FOR TEST! (SET A DATE) Handout