Q: Which of the following equations correctly represents the effect of insulin on glucose uptake?

$$\text{Glucose}_{\text{blood}} \xrightarrow{\text{Insulin}} \text{Glucose}_{\text{cell}}$$

Question 1

Which of the following is NOT a long-term process regulated by the endocrine system?

Accepted Answer

Reflex actions

Question 2

A hormone binds to a receptor on a target cell and stimulates the synthesis of a new enzyme. This is an example of which function of hormones?

Accepted Answer

Stimulating synthesis of enzymes or structural proteins

Question 3

Which class of hormones is synthesized as inactive prohormones and later converted to active hormones?

Accepted Answer

Peptide hormones

Question 4

Which hormone is produced by the pineal gland and is involved in regulating circadian rhythms?

Accepted Answer

Melatonin

Question 5

A patient presents with abnormally high blood glucose levels and excessive urination. Which hormone is most likely deficient or ineffective?

Accepted Answer

Insulin

Question 6

Which of the following hormones is a glycoprotein and stimulates the thyroid gland?

Accepted Answer

Thyroid-stimulating hormone (TSH)

Question 7

Which hormone is released by the adrenal cortex and is responsible for sodium conservation and potassium elimination?

Accepted Answer

Aldosterone

Question 8

Which hormone is produced by the parathyroid glands and increases blood calcium levels by stimulating osteoclasts?

Accepted Answer

Parathyroid hormone (PTH)

Question 9

Which of the following is a correct equation for the conversion of thyroxine (T4) to triiodothyronine (T3)?

Accepted Answer

$$\mathrm{T}_4 \rightarrow \mathrm{T}_3 + \mathrm{I}^-$$

Question 10

A patient with low blood calcium is given a hormone that inhibits osteoclasts and increases calcium excretion by the kidneys. Which hormone was administered?

Accepted Answer

Calcitonin

Question 11

Which hormone is released by beta cells of the pancreas and stimulates glucose uptake by cells?

Accepted Answer

Insulin

Question 12

Which hormone is released by alpha cells of the pancreas and stimulates gluconeogenesis in the liver?

Accepted Answer

Glucagon

Question 13

Which of the following is a permissive effect in hormone interactions?

Accepted Answer

One hormone is necessary for another to produce its effect

Question 14

Which hormone is produced by the kidneys and stimulates red blood cell formation?

Accepted Answer

Erythropoietin (EPO)

Question 15

Which hormone is released by the heart in response to excessive blood volume and acts to reduce blood pressure?

Accepted Answer

Atrial natriuretic peptide (ANP)

Question 16

Which hormone is essential for normal development of skeletal, muscular, and nervous systems in children?

Accepted Answer

Thyroid hormones

Question 17

Which of the following best describes the alarm phase of the General Adaptation Syndrome (GAS)?

Accepted Answer

Immediate response to stress, mediated by epinephrine and norepinephrine

Question 18

Which hormone is released by the adrenal medulla and increases both muscular strength and endurance by mobilizing glycogen reserves?

Accepted Answer

Epinephrine

Question 19

Which hormone is produced by adipose tissue and provides feedback control for appetite?

Accepted Answer

Leptin

Question 20

Which of the following equations correctly represents the effect of insulin on glucose uptake?

Accepted Answer

$$	ext{Glucose}_{	ext{blood}} \xrightarrow{	ext{Insulin}} 	ext{Glucose}_{	ext{cell}}$$

Introduction to the Endocrine System: Structure, Function, and Hormone Classification

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