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Which substance is secreted by the loop of Henie?

A.

Calcium

B.

Drugs

C.

Urea

D.

Bicarbonate ions

Answer and Explanation

The Correct Answer is C

A. Calcium: Calcium reabsorption primarily occurs in the distal convoluted tubule, not the loop of Henle.

B. Drugs: Drug secretion mainly happens in the proximal convoluted tubule.

C. Urea: Urea is secreted by the loop of Henle, especially in the thin descending limb, as part of the concentration of urine.

D. Bicarbonate ions: Bicarbonate is reabsorbed mainly in the proximal convoluted tubule, not secreted by the loop of Henle.


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Related Questions

Correct Answer is C

Explanation

A. Trachea: The trachea is the airway that leads to the lungs, but it does not contain tonsils.

B. Esophagus: The esophagus is the tube that connects the throat to the stomach, and it does not contain tonsils.

C. Pharynx: The tonsils are located in the pharynx, which is the region of the throat behind the mouth and nasal cavity. They play a role in the immune system by trapping pathogens that enter the body through the mouth and nose.

D. Larynx: The larynx is the voice box, located below the pharynx, and does not house tonsils.

Correct Answer is B

Explanation

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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