BIOL 67B Humoral Reflexes

Which hormone is primarily responsible for increasing blood calcium levels by promoting calcium release from bones?

• Calcitonin

• Parathyroid hormone (PTH)

• Aldosterone

• Glucagon

What is the primary function of calcitonin in the body?

• To decrease blood calcium levels

• To increase blood calcium levels

• To regulate blood glucose levels

• To stimulate water reabsorption in the kidneys

In the Renin-Angiotensin-Aldosterone System (RAAS), what is the role of angiotensin II?

• To promote sodium reabsorption in the kidneys

• To inhibit the secretion of aldosterone

• To lower blood pressure

• To promote vasodilation

Which hormone is released by the posterior pituitary gland and helps regulate water reabsorption in the kidneys?

• Thyroid hormone

• Parathyroid hormone (PTH)

• Antidiuretic hormone (ADH)

•  Atrial natriuretic peptide (ANP)

Atrial natriuretic peptide (ANP) is released in response to:

• Low blood pressure

• High blood pressure

• Low blood glucose levels

• High blood calcium levels

Which of the following hormones plays a key role in regulating blood glucose levels by promoting glucose uptake by cells?

• Parathyroid hormone (PTH)

• Cortisol

• Glucagon

• Insulin

Which hormone is responsible for stimulating the release of glucose from the liver into the bloodstream?

• Insulin

• Glucagon

• Aldosterone

• Thyroid hormone

Which of the following hormones is secreted by the adrenal cortex and plays a role in regulating salt and water balance in the body?

• Aldosterone

• Parathyroid hormone (PTH)

• Insulin

• Glucagon

A hormone that promotes the reabsorption of sodium ions and the excretion of potassium ions in the kidneys, helping to increase blood pressure and blood volume, is:

• Insulin

•  Atrial natriuretic peptide (ANP)

• Antidiuretic hormone (ADH)

• Aldosterone

What is the primary function of Atrial Natriuretic Peptide (ANP) in the body?

• To promote water reabsorption in the kidneys

• To stimulate aldosterone production

• To increase blood pressure

• To promote sodium and water excretion in the kidneys