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In which structure are lymphocytes produced?

A.

Liver

B.

Stomach

C.

Small Intestine

D.

Thymus

Answer and Explanation

The Correct Answer is D

A. Liver: The liver plays a role in detoxification and metabolism but is not involved in lymphocyte production.

B. Stomach: The stomach is part of the digestive system, not the immune system.

C. Small Intestine: The small intestine is involved in nutrient absorption and contains some lymphoid tissue (Peyer's patches) but is not the main site of lymphocyte production.

D. Thymus: The thymus is the organ where T-lymphocytes mature and are essential for the immune response.


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Related Questions

Correct Answer is C

Explanation

A. Expiratory reserve volume: This is included in the calculation of vital capacity (VC = TV + IRV + ERV).

B. Tidal volume: This is also included in vital capacity.

C. Residual volume: The residual volume is the air that remains in the lungs after a forced exhalation and is not part of the vital capacity.

D. Inspiratory reserve volume: This is included in the calculation of vital capacity.

Correct Answer is A

Explanation

A. Enters the superior or inferior vena cava; exits the pulmonary arteries: Deoxygenated blood from the body enters the heart through the superior or inferior vena cava and flows into the right atrium. It then passes into the right ventricle and exits through the pulmonary arteries to the lungs for oxygenation.

B. Enters the aorta; exits the pulmonary veins: The aorta and pulmonary veins both handle oxygenated blood, not deoxygenated blood, making this incorrect.

C. Enters the superior or inferior vena cava; exits the coronary arteries: The coronary arteries supply the heart muscle itself with oxygenated blood, so this is incorrect for deoxygenated blood.

D. Enters the pulmonary veins; exits the aorta: Both the pulmonary veins and the aorta are part of the oxygenated blood circuit, making this incorrect for deoxygenated blood flow.

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