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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. Prostate: The prostate gland contributes to the semen volume but only about 20-30%. It produces a fluid that nourishes sperm and helps transport them but is not the primary contributor to the total volume of semen.

B. Ductus Deferens: The ductus deferens (vas deferens) is a tube that transports sperm from the epididymis to the ejaculatory duct. It does not produce or contribute to the volume of semen.

C. Seminal Vesicle: The seminal vesicles contribute approximately 60% of the total semen volume. They secrete a fluid that is rich in fructose and other substances that provide energy for sperm and help in the formation of semen.

Correct Answer is A

Explanation

A. Epiglottis: The epiglottis is a leaf-shaped flap of cartilage located at the root of the tongue. It covers the opening of the trachea during swallowing to prevent food and liquids from entering the airway. This function is crucial for protecting the respiratory tract from aspiration.

B. Arytenoids: The arytenoid cartilages are small, paired cartilages that are involved in the movement and tension of the vocal cords but do not cover the opening of the trachea.

C. Thyroid: The thyroid cartilage is the largest cartilage of the larynx and forms the Adam's apple but does not cover the trachea.

D. Cricoid: The cricoid cartilage is located below the thyroid cartilage and is the only complete ring of cartilage around the trachea. While it provides support, it does not cover the opening of the trachea.

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