Question 1

Which hormone is primarily produced by the thyroid gland and is responsible for regulating metabolic rate in the human body?

Accepted Answer

Thyroxine (T4)

Question 2

A patient presents with elevated blood glucose levels. Which organ is most directly responsible for producing the hormone that lowers blood glucose, and what is the hormone?

Accepted Answer

Pancreas; Insulin

Question 3

During a heart dissection, you observe thick muscular walls and valves. Which chamber of the heart are you most likely examining?

Accepted Answer

Left ventricle

Question 4

Which of the following best describes the function of the adrenal gland?

Accepted Answer

Produces hormones involved in stress response

Question 5

A blood sample is tested for blood type using anti-A and anti-B antibodies. If agglutination occurs with anti-B but not anti-A, what is the blood type?

Accepted Answer

Type B

Question 6

Which of the following equations correctly represents cardiac output ($$CO) in $$terms of heart rate ($$HR) $$and stroke volume ($$SV$$)?

Accepted Answer

$$CO = HR 	imes SV$$

Question 7

A patient with coronary atherosclerosis is at risk for which of the following complications due to reduced blood flow?

Accepted Answer

Myocardial infarction (heart attack)

Question 8

Which of the following best distinguishes an artery from a vein in a histological slide?

Accepted Answer

Arteries have thicker muscular walls than veins

Question 9

If a person has a deficiency in insulin production, which of the following symptoms is most likely to occur?

Accepted Answer

High blood glucose

Question 10

Which hormone is secreted by the adrenal cortex and is involved in the regulation of sodium and potassium balance?

Accepted Answer

Aldosterone

Question 11

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

Accepted Answer

Fatigue and weight gain

Question 12

Which of the following is the correct sequence of blood flow through the heart?

Accepted Answer

Right atrium → Right ventricle → Lungs → Left atrium → Left ventricle → Body

Question 13

Which of the following best describes the role of glucagon produced by the pancreas?

Accepted Answer

Increases blood glucose by stimulating glycogen breakdown

Question 14

A patient with Addison's disease has a deficiency in which hormone, and what is a common symptom?

Accepted Answer

Cortisol; fatigue and low blood pressure

Question 15

Which of the following formulas correctly calculates mean arterial pressure ($$MAP) $$using systolic ($$SBP) $$and diastolic ($$DBP) $$blood pressure?

Accepted Answer

$$MAP = DBP + \frac{1}{3}(SBP - DBP)$$

Question 16

Which of the following is a direct effect of aldosterone secretion?

Accepted Answer

Increased sodium reabsorption in the kidneys

Question 17

A patient with a blocked coronary artery is most likely to experience which physiological consequence?

Accepted Answer

Reduced oxygen delivery to cardiac muscle

Question 18

Which of the following best explains why veins have valves while arteries do not?

Accepted Answer

Veins carry blood under lower pressure and need valves to prevent backflow

Question 19

Which of the following is a consequence of untreated hypothyroidism in adults?

Accepted Answer

Development of myxedema

Question 20

A patient with type O blood can safely receive which type(s) of blood in a transfusion?

Accepted Answer

Type O only

Endocrine and Cardiovascular System: Anatomy & Physiology Study Guide

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