Question 1

Which of the following best describes the primary function of the integumentary system?

Accepted Answer

Protection against environmental hazards

Question 2

A patient presents with a severe burn that destroys both the epidermis and dermis. Which function of the skin is most immediately compromised?

Accepted Answer

Protection against dehydration and infection

Question 3

Which of the following best explains why the kidneys receive approximately 20% of cardiac output at rest?

Accepted Answer

To filter blood and regulate homeostasis

Question 4

A person is experiencing muscle fatigue during a marathon. Which metabolic pathway is primarily responsible for the initial rapid production of ATP in skeletal muscle?

Accepted Answer

Glycolysis

Question 5

Which of the following is a correct sequence of events in the transmission of a nerve impulse across a synapse?

Accepted Answer

Action potential in presynaptic neuron → Calcium influx → Neurotransmitter release

Question 6

A patient with type 1 diabetes is unable to produce insulin. Which organ system is primarily affected, and what is the main consequence?

Accepted Answer

Endocrine system; inability to regulate blood glucose

Question 7

Which of the following best describes the role of the lymphatic system in immunity?

Accepted Answer

It transports lymphocytes and filters pathogens from lymph.

Question 8

A patient is diagnosed with anemia due to decreased erythropoietin production. Which organ is most likely dysfunctional?

Accepted Answer

Kidney

Question 9

Which of the following equations correctly represents the calculation of cardiac output ($$CO$$)?

Accepted Answer

$$CO = HR 	imes SV$$

Question 10

A person inhales deeply and then exhales as much air as possible. Which respiratory volume is being measured?

Accepted Answer

Vital capacity

Question 11

Which of the following best explains the function of the electron transport chain in cellular respiration?

Accepted Answer

It generates a proton gradient to produce ATP.

Question 12

A patient is unable to absorb vitamin B12 due to a lack of intrinsic factor. Which organ is primarily responsible for producing intrinsic factor?

Accepted Answer

Stomach

Question 13

Which of the following best describes the difference between innate and adaptive immunity?

Accepted Answer

Innate immunity is present at birth, adaptive immunity develops after exposure to antigens.

Question 14

Which of the following is the correct order of the three stages of prenatal development?

Accepted Answer

Germinal → Embryonic → Fetal

Question 15

A patient with a blocked common bile duct will have difficulty digesting which type of nutrient?

Accepted Answer

Lipids

Question 16

Which of the following best describes the function of the hypothalamus in the endocrine system?

Accepted Answer

It regulates the release of hormones from the pituitary gland.

Question 17

Which of the following is a function of the skeletal system?

Accepted Answer

Storage of minerals such as calcium and phosphorus

Question 18

A person with a genetic mutation affecting the formation of hemoglobin will most likely experience which of the following symptoms?

Accepted Answer

Decreased ability to transport oxygen

Question 19

Which of the following equations correctly represents the calculation of body mass index ($$BMI$$)?

Accepted Answer

$$BMI = \frac{weight\ (kg)}{height\ (m)^2$}$$

Question 20

Which of the following best explains why the nervous and endocrine systems are considered complementary in maintaining homeostasis?

Accepted Answer

The nervous system provides rapid, short-term responses, while the endocrine system provides slower, long-term regulation.

Syllabus and Course Structure: Human Anatomy & Physiology (BIOL 2404)

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