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Lymph from the lower limbs drains into which duct?

A.

Subclavian duct

B.

Thoracic duct

C.

Left lymphatic duct

D.

Right lymphatic duct

Answer and Explanation

The Correct Answer is B

A. Subclavian duct: There is no specific "subclavian duct" for lymph drainage; lymphatic fluid drains into the subclavian veins.

B. Thoracic duct: The thoracic duct drains lymph from the lower limbs and the left side of the body, returning it to the circulatory system at the junction of the left subclavian and internal jugular veins.

C. Left lymphatic duct: The thoracic duct is often referred to as the left lymphatic duct but is not limited to just left drainage.

D. Right lymphatic duct: The right lymphatic duct drains lymph from the right upper quadrant of the body but does not drain lymph from the lower limbs.


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Related Questions

Correct Answer is A

Explanation

A. Early spermatid: Early spermatids are haploid cells, round in shape, and have a central nucleus with a significant amount of cytoplasm.

B. Spermatogonium: Spermatogonia are diploid cells found in the basal layer of the seminiferous tubules and are not haploid.

C. Late spermatid: Late spermatids are more elongated and less round as they are close to maturing into sperm.

D. Primary spermatocyte: Primary spermatocytes are diploid cells that undergo meiosis to produce haploid spermatids.

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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