Worksheet Chapter 13: Homeostasis and the Human Urinary System

1. Explain how vasodilation helps lower body temperature during hot weather.

2. True or False: Under healthy physiological conditions, blood cells and plasma proteins readily filter through Bowman's capsule into the glomerular filtrate.

3. A runner completes a marathon on a hot day without drinking sufficient water. Explain the osmoregulation mechanism triggered to restore blood osmotic pressure.

4. Explain why glucose is present in the urine of an untreated Diabetes Mellitus patient.

5. Name the two hormones produced by the Islets of Langerhans that regulate blood glucose levels.

6. Fill in the blank: The maintenance of a relatively constant internal environment despite external changes is known as ________.

7. Compare the composition of fluid in Bowman's capsule (glomerular filtrate) with that of urine leaving the collecting duct.

8. Describe the three major sequential processes involved in urine formation within a nephron.

9. Which hormone acts on the distal convoluted tubule and collecting duct to increase water reabsorption when blood osmotic pressure is high?

10. True or False: Glucagon stimulates liver cells to convert glucose into glycogen when blood sugar rises.