Alert 5_Essay 2: Role of ADH

What is the role of antidiuretic hormone (ADH) in the regulation of fluid retention in the kidney?

• Increases blood volume

• Decreases blood volume

• Increases permeability of collecting duct to water

• Decreases water reabsorption in the collecting duct

What happens to blood osmolarity when a person drinks a large amount of water?

• Blood osmolarity will fluctuates

• Blood osmolarity will remains the same

• Blood osmolarity will decreases

• Blood osmolarity will increases

How do osmoreceptor cells respond decrease in blood osmolarity below the normal range?

• Stimulate the posterior pituitary gland to increase ADH secretion

• Activate the adrenal glands

• Stimulate the anterior pituitary gland

• Stimulate the posterior pituitary gland to decrease ADH secretion

What effect does a decrease in ADH secretion have on the permeability of the collecting duct towards water?

• Increases permeability of the collecting duct

• Decreases permeability of the collecting duct

• No effect on permeability of the collecting duct

• Causes water to be excreted directly

Which statement is NOT the result of decreased water reabsorption in the collecting duct?

• Decreased blood volume

• Increased blood osmolarity

• Increased ADH secretion

• Production of diluted urine

How does the body respond to a decrease in blood osmolarity?

• Increase aldosterone secretion

• Decrease aldosterone secretion

• Increase ADH secretion

• Decrease ADH secretion

What is the function of vasopressin in the regulation of water content?

• Increases blood pressure

• Decreases blood pressure

• Increases water reabsorption in the kidney

• Decreases water reabsorption in the kidney

What is the purpose of producing large volume and diluted urine?

• To decrease blood volume

• To conserve water

• To excrete excess water

• To increase blood osmolarity

Secretion of ADH will stimulate which part of nephron?

• Glomerulus

• Proximal convoluted tubule

• Distal convoluted tubule

• Collecting duct

What is the main function of osmoreceptor cells in the regulation of water content?

• Detect changes in blood osmolarity

• Produce ADH

• Regulate blood pressure

• Control kidney function