Question 1

Which hormone released by the anterior pituitary gland stimulates the thyroid gland, and what is its primary function?

Accepted Answer

Thyroid-stimulating hormone (TSH); stimulates the thyroid gland to produce thyroid hormones

Question 2

A patient presents with low blood calcium levels. Which hormone is most likely deficient, and which organ produces it?

Accepted Answer

Parathyroid hormone (PTH); produced by the parathyroid glands

Question 3

During pregnancy, why is it important to determine the Rh factor of both the mother and fetus?

Accepted Answer

To avoid Rh incompatibility, which can cause hemolytic disease of the newborn

Question 4

Which of the following is a short-term mechanism that increases blood pressure?

Accepted Answer

Activation of the sympathetic nervous system

Question 5

What is the correct equation to calculate stroke volume, and what does each variable represent?

Accepted Answer

$$SV = EDV - ESV$$; SV = stroke volume, EDV = end-diastolic volume, ESV = end-systolic volume

Question 6

A patient with sickle cell anemia is experiencing severe pain. What is the most likely cause of this pain?

Accepted Answer

Vaso-occlusion caused by sickled red blood cells blocking capillaries

Question 7

Which of the following best describes the process of hemostasis?

Accepted Answer

The process by which blood clots form to stop bleeding, involving vascular spasm, platelet plug formation, and coagulation

Question 8

What is the function of intercalated discs in cardiac muscle?

Accepted Answer

They allow rapid transmission of electrical impulses and mechanical connection between cardiac cells

Question 9

Which plasma protein is primarily responsible for maintaining osmotic pressure in the blood?

Accepted Answer

Albumin

Question 10

How does the biconcave shape of red blood cells enhance their function?

Accepted Answer

It maximizes surface area for gas exchange and allows flexibility to pass through capillaries

Question 11

Which type of white blood cell is most abundant and primarily responsible for phagocytosis of bacteria?

Accepted Answer

Neutrophils

Question 12

A hypertensive patient is prescribed an ACE inhibitor. What is the mechanism by which this medication lowers blood pressure?

Accepted Answer

It blocks the conversion of angiotensin I to angiotensin II, reducing vasoconstriction

Question 13

Which of the following is the normal range for adult systolic blood pressure?

Accepted Answer

90–120 mmHg

Question 14

What is the correct sequence of blood flow from the femoral vein to the heart?

Accepted Answer

Femoral vein → inferior vena cava → right atrium

Question 15

Which of the following mechanisms is NOT involved in short-term regulation of blood pressure?

Accepted Answer

Renin-angiotensin-aldosterone system

Question 16

Which cell type is responsible for the production of antibodies?

Accepted Answer

Plasma cells (derived from B lymphocytes)

Question 17

Which of the following is a function of the syncytium in cardiac muscle?

Accepted Answer

It allows coordinated contraction of the entire heart muscle

Question 18

Which plasma protein is essential for blood clotting?

Accepted Answer

Fibrinogen

Question 19

A patient is found to have a deficiency in intrinsic factor. What is the most likely consequence?

Accepted Answer

Impaired absorption of vitamin B12 leading to pernicious anemia

Question 20

Which of the following best describes the cascade mechanism in hemostasis?

Accepted Answer

A series of enzymatic reactions that lead to the formation of fibrin from fibrinogen

Comprehensive Study Guide: Key Topics in Anatomy & Physiology

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