MCQs

11262 questions found

Practice Questions

15. The SA node (sinoatrial node) is known as the heart’s natural pacemaker because it:

A. Relays impulses to the ventricles

B. Initiates the electrical impulse for contraction ✓

C. Regulates blood pressure

D. Filters blood

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nmdcat.online Anatomy & Physiology -II

Jun 6, 2026

14. What is the approximate pH range of normal human blood?

A. 6.5-6.9

B. 7.0-7.3

C. 7.35-7.45 ✓

D. 7.5-7.8

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nmdcat.online Anatomy & Physiology -II

Jun 6, 2026

13. Which of the following is the largest lymphatic organ in the body?

A. Thymus

B. Tonsil

C. Spleen ✓

D. Lymph node

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nmdcat.online Anatomy & Physiology -II

Jun 6, 2026

12. The universal blood recipient type is:

A. O negative

B. A positive

C. AB positive ✓

D. B negative

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nmdcat.online Anatomy & Physiology -II

Jun 6, 2026

11. Which blood component is primarily responsible for oxygen transport?

A. Platelets

B. Leukocytes

C. Erythrocytes ✓

D. Plasma

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nmdcat.online Anatomy & Physiology -II

Jun 6, 2026

10. The cells in the testes that produce testosterone are called:

A. Sertoli cells

B. Spermatogonia

C. Leydig cells (interstitial cells) ✓

D. Sustentacular cells

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nmdcat.online Anatomy & Physiology -II

Jun 6, 2026

9. Oxytocin, a hormone from the posterior pituitary, plays a role in:

A. Milk production

B. Uterine contractions during childbirth ✓

C. Growth of long bones

D. Regulation of blood pressure

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nmdcat.online Anatomy & Physiology -II

Jun 6, 2026

8. The hypothalamic-pituitary axis is a critical feedback loop controlling many endocrine glands. Which gland is often referred to as the “master gland”?

A. Thyroid gland

B. Adrenal gland

C. Pituitary gland ✓

D. Pancreas

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nmdcat.online Anatomy & Physiology -II

Jun 6, 2026

7. Which part of the adrenal gland produces epinephrine and norepinephrine?

A. Adrenal cortex

B. Adrenal medulla ✓

C. Zona glomerulosa

D. Zona fasciculata

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nmdcat.online Anatomy & Physiology -II

Jun 6, 2026

6. Parathyroid hormone (PTH) plays a crucial role in regulating the blood levels of what ion?

A. Sodium

B. Potassium

C. Calcium ✓

D. Chloride

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nmdcat.online Anatomy & Physiology -II

Jun 6, 2026

5. Glucagon is secreted by the alpha cells of the pancreas and has what effect on blood glucose?

A. Decreases it

B. Increases it ✓

C. Has no effect

D. Regulates calcium

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nmdcat.online Anatomy & Physiology -II

Jun 6, 2026

4. The primary function of insulin, secreted by the pancreas, is to:

A. Raise blood glucose levels

B. Lower blood glucose levels ✓

C. Stimulate protein synthesis

D. Increase fat breakdown

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nmdcat.online Anatomy & Physiology -II

Jun 6, 2026

3. Which endocrine gland is responsible for regulating basal metabolic rate?

A. Pancreas

B. Thyroid gland ✓

C. Adrenal gland

D. Parathyroid gland

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nmdcat.online Anatomy & Physiology -II

Jun 6, 2026

2. The adrenal cortex produces hormones such as cortisol and aldosterone. These are classified as:

A. Catecholamines

B. Steroid hormones ✓

C. Peptide hormones

D. Amine hormones

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nmdcat.online Anatomy & Physiology -II

Jun 6, 2026

1. Which hormone is released by the posterior pituitary gland and causes water reabsorption in the kidneys?

A. Oxytocin

B. Antidiuretic Hormone (ADH) ✓

C. Growth Hormone

D. Prolactin

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nmdcat.online Anatomy & Physiology -II

Jun 6, 2026

The enzyme responsible for breaking down dietary proteins into smaller peptides and amino acids in the stomach is:

A. Amylase

B. Lipase

C. Pepsin ✓

D. Trypsin

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nmdcat.online Bio chemistry for nurses

Jun 6, 2026

A patient with a genetic defect in their ability to synthesize certain nucleotide bases may have impaired DNA replication and cell division. The primary building blocks of DNA are:

A. Amino acids

B. Monosaccharides

C. Nucleotides ✓

D. Fatty acids

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nmdcat.online Bio chemistry for nurses

Jun 6, 2026

A solution with a pH of 7.0 is considered:

A. Acidic

B. Neutral ✓

C. Basic (alkaline)

D. Highly acidic

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nmdcat.online Bio chemistry for nurses

Jun 6, 2026

A specific type of protein that functions as an intracellular or extracellular signal, influencing the activity of target cells, is a(n):

A. Enzyme

B. Structural protein

C. Hormone ✓

D. Transport protein

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nmdcat.online Bio chemistry for nurses

Jun 6, 2026

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MCQs

Practice Questions

15. The SA node (sinoatrial node) is known as the heart’s natural pacemaker because it:

14. What is the approximate pH range of normal human blood?

13. Which of the following is the largest lymphatic organ in the body?

12. The universal blood recipient type is:

11. Which blood component is primarily responsible for oxygen transport?

10. The cells in the testes that produce testosterone are called:

9. Oxytocin, a hormone from the posterior pituitary, plays a role in:

8. The hypothalamic-pituitary axis is a critical feedback loop controlling many endocrine glands. Which gland is often referred to as the “master gland”?

7. Which part of the adrenal gland produces epinephrine and norepinephrine?

6. Parathyroid hormone (PTH) plays a crucial role in regulating the blood levels of what ion?

5. Glucagon is secreted by the alpha cells of the pancreas and has what effect on blood glucose?

4. The primary function of insulin, secreted by the pancreas, is to:

3. Which endocrine gland is responsible for regulating basal metabolic rate?

2. The adrenal cortex produces hormones such as cortisol and aldosterone. These are classified as:

1. Which hormone is released by the posterior pituitary gland and causes water reabsorption in the kidneys?

The enzyme responsible for breaking down dietary proteins into smaller peptides and amino acids in the stomach is:

A patient with a genetic defect in their ability to synthesize certain nucleotide bases may have impaired DNA replication and cell division. The primary building blocks of DNA are:

A solution with a pH of 7.0 is considered:

A specific type of protein that functions as an intracellular or extracellular signal, influencing the activity of target cells, is a(n):

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