W7 - Phys 261 - WCU Questions & Answers 2026 | Latest
Review Guide
1. Describe how the urinary and endocrine systems collaborate to maintain
water balance in the body.
The urinary system absorbs nutrients, and the endocrine system
regulates digestion.
The urinary system detoxifies blood, while the endocrine system
controls muscle contractions.
The urinary system transports oxygen, and the endocrine system
regulates heart rate.
The urinary system filters blood to produce urine, while the
endocrine system releases hormones that regulate kidney function
and water retention.
2. What is renin?
An enzyme that helps control blood sugar and made by special cells
in the pancreas
An enzyme that helps digest proteins and made by special cells in the
stomach
An enzyme that helps digest fats and fat-soluble vitamins, and made
special by the pancreas
An enzyme that helps control blood pressure and made by special
cells in the kidneys
3. What structure do the Bowman's capsule and glomerulus together form?
Renal corpuscle
Nephron
, Ureter
Kidney tubule
4. What is the osmolarity at the bottom of the loop of Henle?
High osmolarity
Hypoosmotic
Low osmolarity
Isosmotic
5. The plicae circulares, microvilli, and villi are:
All found in the large intestine
Structures that increase surface absorption area in the small
intestine
Structures that give the intestine its puckered appearance
Glands that secrete digestive enzymes
6. A runner who drinks water excessively during a marathon runs the risk of:
hyperkalemia.
hypermagnesemia.
respiratory acidosis.
dilutional hyponatremia
7. Describe the role of motilin in the gastrointestinal tract and its primary
stimulus.
Motilin stimulates gastric acid secretion in response to food intake.
, Motilin is involved in the absorption of nutrients.
Motilin regulates gastrointestinal motility and is primarily stimulated
by fasting states.
Motilin is released in response to fatty foods in the small intestine.
8. Rugae, plicae, and villi are all features that
provide immune function.
provide mechanical digestion.
secrete hormones.
secrete enzymes.
increase surface area.
9. If a person experiences constipation, which aspect of the defecation process
is likely disrupted?
The expulsion of feces.
The secretion of digestive enzymes.
The filtration of blood in the kidneys.
The absorption of water in the intestines.
10. Describe the significance of the osmolarity at the bottom of the loop of
Henle in relation to urine concentration.
The low osmolarity at the bottom of the loop of Henle prevents water
reabsorption.
The high osmolarity at the bottom of the loop of Henle is crucial for
the reabsorption of water and concentration of urine.
, The osmolarity at the bottom of the loop of Henle has no impact on
urine concentration.
The osmolarity is constant throughout the loop of Henle.
11. Describe the function of the mucosa layer in the digestive tract.
The mucosa layer protects the digestive tract from pathogens.
The mucosa layer is responsible for the secretion of digestive
enzymes and absorption of nutrients.
The mucosa layer regulates blood flow to the digestive organs.
The mucosa layer provides structural support to the digestive tract.
12. What vitamin is primarily affected by the disruption of bacteria in the
gastrointestinal tract due to antibiotic use?
Vitamin D
Vitamin K
Vitamin C
Vitamin B12
13. In the small intestine, this first section is where food in the process of
digestion enters from the stomach:
Rectum
Villi
Pancreas
Duodenum
14. Describe the role of gastrin in the digestive process.
Review Guide
1. Describe how the urinary and endocrine systems collaborate to maintain
water balance in the body.
The urinary system absorbs nutrients, and the endocrine system
regulates digestion.
The urinary system detoxifies blood, while the endocrine system
controls muscle contractions.
The urinary system transports oxygen, and the endocrine system
regulates heart rate.
The urinary system filters blood to produce urine, while the
endocrine system releases hormones that regulate kidney function
and water retention.
2. What is renin?
An enzyme that helps control blood sugar and made by special cells
in the pancreas
An enzyme that helps digest proteins and made by special cells in the
stomach
An enzyme that helps digest fats and fat-soluble vitamins, and made
special by the pancreas
An enzyme that helps control blood pressure and made by special
cells in the kidneys
3. What structure do the Bowman's capsule and glomerulus together form?
Renal corpuscle
Nephron
, Ureter
Kidney tubule
4. What is the osmolarity at the bottom of the loop of Henle?
High osmolarity
Hypoosmotic
Low osmolarity
Isosmotic
5. The plicae circulares, microvilli, and villi are:
All found in the large intestine
Structures that increase surface absorption area in the small
intestine
Structures that give the intestine its puckered appearance
Glands that secrete digestive enzymes
6. A runner who drinks water excessively during a marathon runs the risk of:
hyperkalemia.
hypermagnesemia.
respiratory acidosis.
dilutional hyponatremia
7. Describe the role of motilin in the gastrointestinal tract and its primary
stimulus.
Motilin stimulates gastric acid secretion in response to food intake.
, Motilin is involved in the absorption of nutrients.
Motilin regulates gastrointestinal motility and is primarily stimulated
by fasting states.
Motilin is released in response to fatty foods in the small intestine.
8. Rugae, plicae, and villi are all features that
provide immune function.
provide mechanical digestion.
secrete hormones.
secrete enzymes.
increase surface area.
9. If a person experiences constipation, which aspect of the defecation process
is likely disrupted?
The expulsion of feces.
The secretion of digestive enzymes.
The filtration of blood in the kidneys.
The absorption of water in the intestines.
10. Describe the significance of the osmolarity at the bottom of the loop of
Henle in relation to urine concentration.
The low osmolarity at the bottom of the loop of Henle prevents water
reabsorption.
The high osmolarity at the bottom of the loop of Henle is crucial for
the reabsorption of water and concentration of urine.
, The osmolarity at the bottom of the loop of Henle has no impact on
urine concentration.
The osmolarity is constant throughout the loop of Henle.
11. Describe the function of the mucosa layer in the digestive tract.
The mucosa layer protects the digestive tract from pathogens.
The mucosa layer is responsible for the secretion of digestive
enzymes and absorption of nutrients.
The mucosa layer regulates blood flow to the digestive organs.
The mucosa layer provides structural support to the digestive tract.
12. What vitamin is primarily affected by the disruption of bacteria in the
gastrointestinal tract due to antibiotic use?
Vitamin D
Vitamin K
Vitamin C
Vitamin B12
13. In the small intestine, this first section is where food in the process of
digestion enters from the stomach:
Rectum
Villi
Pancreas
Duodenum
14. Describe the role of gastrin in the digestive process.
