Question 1

Which of the following is NOT considered a physical barrier in the innate immune system?

Accepted Answer

Cytokines

Question 2

A child presents with swelling and redness after a bee sting. Which immune response is primarily responsible for these symptoms?

Accepted Answer

Innate immunity

Question 3

Which of the following best describes the role of Major Histocompatibility Complex (MHC) molecules in adaptive immunity?

Accepted Answer

They present antigens to T cells for recognition

Question 4

A patient is experiencing widespread allergic response with increased heart rate, swollen tongue, and difficulty breathing. What is the most likely clinical condition?

Accepted Answer

Anaphylaxis

Question 5

Which of the following is a function of helper T cells ($$CD4^+$$)?

Accepted Answer

Activate B cells and other immune cells

Question 6

According to Boyle's Law, what happens to the pressure in the lungs when the volume increases during inspiration?

Accepted Answer

Pressure decreases

Question 7

Which equation correctly represents Boyle's Law?

Accepted Answer

$$P_1$$ $$V_1$$ = $$P_2$$ $$V_2$$

Question 8

A rightward shift in the oxygen-hemoglobin dissociation curve indicates:

Accepted Answer

Oxygen is more likely to dissociate from hemoglobin

Question 9

Which of the following is a consequence of hyperventilation?

Accepted Answer

Decreased blood $$CO_2$$ levels

Question 10

Where is the respiratory center that controls breathing rate and depth located in the brain?

Accepted Answer

Medulla oblongata

Question 11

Which hormone stimulates the release of digestive enzymes from the pancreas?

Accepted Answer

Cholecystokinin (CCK)

Question 12

During digestion, which process is responsible for the breakdown of carbohydrates into monosaccharides?

Accepted Answer

Chemical digestion

Question 13

Which of the following is NOT a function of the liver in digestion?

Accepted Answer

Secretion of digestive enzymes into the stomach

Question 14

Which structure is primarily responsible for nutrient absorption in the digestive tract?

Accepted Answer

Small intestine

Question 15

If a person is exposed to carbon monoxide, what happens to the oxygen-hemoglobin dissociation curve?

Accepted Answer

It shifts to the left

Question 16

Which of the following best explains the role of antigen-presenting cells (APCs) in the immune response?

Accepted Answer

They present processed antigens to T cells

Question 17

Which of the following is a function of the bicarbonate buffer system in the blood?

Accepted Answer

Regulates blood pH

Question 18

Which equation represents the bicarbonate buffer system?

Accepted Answer

$$CO_2 + H_2O$$ \rightarrow H_2CO_3 \rightarrow H^+ + $$HCO_3$$^-$$

Question 19

Which of the following is a key difference between humoral and cell-mediated immunity?

Accepted Answer

Humoral immunity involves antibodies, while cell-mediated immunity involves T cells

Question 20

Which digestive hormone is responsible for stimulating the secretion of gastric acid?

Accepted Answer

Gastrin

Study Guide: Lymphatic, Respiratory, and Digestive Systems

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