HOMEOSTASIS, KIDNEYS, & ENDOCRINE SYSTEM CONTROL
Try the multiple choice questions on page 367 # 18
On page 368 try questions #15, 810, 18
1. A feedback system requires coordination from three “factors.” What are they?
2. Create a flowchart to show a representative feedback mechanism in living things. In your flowchart
distinguish between negative and positive feedback.
3. List three physical responses to decreasing body temperature. Describe how one of these responses acts
to increase body temperature.
4. You are playing an active game and you begin to sweat. Soon you feel cooler. Construct a labeled
diagram to represent the feedback loop involved.
5. Describe how negative feedback is preferable to positive feedback in most situations.
6. Draw a typical nephron, and label the major regions. On your drawing identify the regions of the nephron
that are responsible for glomerular filtration, tubular re-absorption, and tubular secretion.
7. Draw a flowchart that illustrates the path of a molecule of urea from its entry into the renal artery to the
urethra.
8. As filtrate moves through the loop of Henle, the concentration of the solute changes. Describe how and
why this happens.
BE SURE THAT YOU HAVE REVIEWED YOUR DIAGRAMS OF THE KIDNEY AND THE
NEPHRON. ALSO REVIEW YOUR DIAGRAMS IN THE TEXT THAT SHOW THE LOCATION OF
YOUR GLANDS ON pg. 373 Figure 2. ALSO REVIEW DIAGRAMS OF THE MALE AND FEMALE
REPRODUCTIVE SYSTEMS
Try the multiple choice questions on pg. 407. Also try #4, 7, 11 on page 408
Have you finished your chart about the endocrine hormones?
9. Distinguish between steroid hormones and protein hormones and how they elicit their effect at a cellular
level.
10. Describe how the “fight or flight” response is under both nervous and hormonal control. What gland is
stimulated and what hormones are released? What response is elicited from the various targets in the body.
Explain why these responses occur? Which hormone would be stimulated to be released from the pancreas
and why?
11. Insulin and glucagon are antagonistic hormones that maintain blood glucose balance. Use a flowchart to
show where blood glucose levels are monitored and how they are balanced when they become to high or too
low. Label which hormone is involved , where they target, and how they feedback to the monitor.
12. Distinguish between Type I and Type II diabetes in terms of cause, effects and treatment.
13. What causes kidney stones and how are they treated?