Q: Which equation best represents the negative feedback regulation of hormone levels in the endocrine system?

$$ H_{final} = H_{initial} - (H_{response} \times k) $$

Question 1

Which hormone is released from the posterior pituitary and is responsible for increasing water reabsorption in the kidneys during dehydration?

Accepted Answer

Antidiuretic hormone (ADH)

Question 2

A patient presents with symptoms of hyperthyroidism, including weight loss, feeling hot, and increased energy. Which hormone is likely elevated in this patient?

Accepted Answer

Triiodothyronine (T3)

Question 3

Which hormone is released in response to baby suckling and causes milk ejection from the breast?

Accepted Answer

Oxytocin

Question 4

A patient with hypoparathyroidism is at risk for which of the following complications?

Accepted Answer

Tetany, spasms, and respiratory paralysis

Question 5

Which hormone acts as an antagonist to parathyroid hormone (PTH) and is released when blood calcium levels are high?

Accepted Answer

Calcitonin

Question 6

Which of the following is TRUE regarding the anterior pituitary hormones?

Accepted Answer

They act through second messenger systems

Question 7

A patient with hyperparathyroidism is likely to experience which of the following?

Accepted Answer

Leeching of calcium from bones, resulting in soft and deformed bones

Question 8

Which hormone stimulates the production of eggs in females and sperm in males?

Accepted Answer

Follicle Stimulating Hormone (FSH)

Question 9

Which hormone is responsible for stimulating the release of corticosteroids from the adrenal cortex?

Accepted Answer

Adrenocorticotropic hormone (ACTH)

Question 10

Which hormone is released by the placenta and is detected by pregnancy tests?

Accepted Answer

Human chorionic gonadotropin (HCG)

Question 11

Which hormone is released by pancreatic alpha cells and increases blood sugar levels?

Accepted Answer

Glucagon

Question 12

A patient with Type 1 Diabetes is most likely to have which of the following?

Accepted Answer

Insulin dependence due to hypoinsulin production

Question 13

Which hormone is responsible for stimulating normal and healthy activity of the thyroid gland?

Accepted Answer

Thyroid Stimulating Hormone (TSH)

Question 14

Which hormone is released by the pineal gland and regulates day/night cycles and sexual maturity?

Accepted Answer

Melatonin

Question 15

Which hormone is responsible for the normal development of T lymphocytes in the immune response?

Accepted Answer

Thymosins

Question 16

Steroid hormones are chemically classified as:

Accepted Answer

Hormones made from cholesterol

Question 17

Which hormone increases during puberty in both males and females and triggers ovulation in females?

Accepted Answer

Luteinizing hormone (LH)

Question 18

Which hormone is released by the adrenal medulla and mimics the fight or flight response?

Accepted Answer

Epinephrine

Question 19

If a patient has low levels of T3 and T4, which symptoms are most likely present?

Accepted Answer

Always cold, overweight, hair loss, and dry skin

Question 20

Which equation best represents the negative feedback regulation of hormone levels in the endocrine system?

Accepted Answer

$$ H_{final} = H_{initial} - (H_{response} 	imes k) $$

Endocrine System: Hormones, Glands, and Regulation

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