Question 1

Which of the following best describes the function of the lymphatic capillaries in the immune system?

Accepted Answer

They absorb dietary fats from the digestive tract and transport them to the bloodstream.

Question 2

A patient presents with severe edema in the lower limbs. Which of the following is the most likely cause related to the lymphatic system?

Accepted Answer

Obstruction of the thoracic duct preventing lymph drainage.

Question 3

Which organ is considered a primary lymphatic organ and is essential for the maturation of T lymphocytes?

Accepted Answer

Thymus

Question 4

A person is exposed to a pathogen for the first time. Which type of immunity is primarily responsible for the initial defense?

Accepted Answer

Innate (Non-specific) Immunity

Question 5

Which of the following best explains the role of Major Histocompatibility Complex (MHC) molecules in the immune response?

Accepted Answer

They present antigens to T cells, enabling recognition of infected or abnormal cells.

Question 6

A patient with a deficiency in complement proteins would most likely experience which of the following?

Accepted Answer

Reduced ability to lyse pathogens and increased susceptibility to infections.

Question 7

Which of the following equations correctly represents Boyle's Law as it applies to pulmonary ventilation?

Accepted Answer

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

Question 8

During external respiration, which process occurs at the alveolar-capillary membrane?

Accepted Answer

Oxygen diffuses from alveoli into capillaries, while carbon dioxide diffuses from capillaries into alveoli.

Question 9

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

Accepted Answer

Dyspnea due to reduced airflow in the lower respiratory system.

Question 10

Which respiratory volume is defined as the amount of air inhaled or exhaled during normal, quiet breathing?

Accepted Answer

Tidal volume

Question 11

A patient with a pneumothorax has air in the pleural cavity. What is the most immediate consequence for lung function?

Accepted Answer

Collapse of the affected lung due to loss of negative pressure.

Question 12

Which of the following best describes the function of surfactant in the alveoli?

Accepted Answer

It reduces surface tension, preventing alveolar collapse during exhalation.

Question 13

Which of the following structures is responsible for preventing food from entering the trachea during swallowing?

Accepted Answer

Epiglottis

Question 14

A patient is diagnosed with Helicobacter pylori infection. Which condition is most likely to develop as a result?

Accepted Answer

Gastric ulcer

Question 15

Which enzyme is secreted by the pancreas and is responsible for digesting proteins in the small intestine?

Accepted Answer

Trypsin

Question 16

Which of the following best describes the process of peristalsis in the digestive tract?

Accepted Answer

Rhythmic contractions of smooth muscle that propel food along the alimentary canal.

Question 17

A patient with liver cirrhosis is likely to have impaired synthesis of which important plasma protein?

Accepted Answer

Albumin

Question 18

Which of the following is a function of B cells in the adaptive immune response?

Accepted Answer

Production of immunoglobulins (antibodies) to neutralize pathogens.

Question 19

Which of the following best describes the role of cholecystokinin (CCK) in digestion?

Accepted Answer

It stimulates the release of bile from the gallbladder and pancreatic enzymes.

Question 20

A patient is experiencing hyperventilation. What effect does this have on blood pH, and which equation describes this relationship?

Accepted Answer

Blood pH increases (alkalosis) due to decreased $$CO_2$$, as described by $$CO_2 + H_2O$$ \rightarrow H_2CO_3 \rightarrow H^+ + $$HCO_3$$^-$$

Anatomy & Physiology Study Notes: Lymphatic, Immune, Respiratory, and Digestive Systems

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