$$\Delta [Glucose] = [Glucose]_{initial} - [Insulin] \times k$$

Question 1

Which of the following is classified as a primary endocrine organ?

Accepted Answer

Thyroid gland

Question 2

Which hormone is secreted by the zona glomerulosa of the adrenal cortex?

Accepted Answer

Aldosterone

Question 3

A patient presents with high blood glucose and frequent urination. Which feedback loop is most likely disrupted?

Accepted Answer

High blood glucose feedback loop

Question 4

Which hormone is hydrophobic and requires a transport protein to travel in the blood?

Accepted Answer

Cortisol

Question 5

Which of the following best describes the difference between endocrine and exocrine pancreatic cells?

Accepted Answer

Exocrine cells secrete digestive enzymes into ducts; endocrine cells secrete hormones into the blood.

Question 6

Which hormone is produced by alpha cells in the pancreas?

Accepted Answer

Glucagon

Question 7

Which of the following is a tropic hormone?

Accepted Answer

Thyroid-stimulating hormone (TSH)

Question 8

A patient with Graves' disease is likely to have which of the following symptoms?

Accepted Answer

Weight loss, heat intolerance, and tachycardia

Question 9

Which equation best represents the negative feedback regulation of blood glucose by insulin?

Accepted Answer

$$\Delta [Glucose] = [Glucose]_{initial} - [Insulin] 	imes k$$

Question 10

Which hormone is stored in the posterior pituitary and released in response to increased plasma osmolarity?

Accepted Answer

Antidiuretic hormone (ADH)

Question 11

Which of the following disorders is caused by hyposecretion of growth hormone during childhood?

Accepted Answer

Pituitary dwarfism

Question 12

Which hormone is secreted by the parafollicular (C) cells of the thyroid?

Accepted Answer

Calcitonin

Question 13

Which of the following best describes up-regulation of hormone receptors?

Accepted Answer

Increase in the number of receptors in response to low hormone levels

Question 14

Which hormone is secreted by the zona fasciculata of the adrenal cortex?

Accepted Answer

Cortisol

Question 15

Which of the following is regulated by positive feedback?

Accepted Answer

Oxytocin release during childbirth

Question 16

Which hormone is secreted by beta cells in the pancreas?

Accepted Answer

Insulin

Question 17

Which hormone is secreted by the adrenal medulla?

Accepted Answer

Epinephrine

Question 18

Which of the following is a common symptom of Addison disease?

Accepted Answer

Hypotension and hyperpigmentation

Question 19

Which hormone is secreted by delta cells in the pancreas?

Accepted Answer

Somatostatin

Question 20

Which of the following best describes the mechanism of action for water-soluble hormones?

Accepted Answer

They bind to cell surface receptors and activate second messenger systems.

Endocrine System: Anatomy & Physiology Study Notes

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