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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 B

Explanation

Palatine Tonsils:

  • Location: B. Oropharynx

The palatine tonsils are located on either side of the oropharynx, between the anterior and posterior pillars. They are the most commonly recognized tonsils and are often visible during a throat examination.

Lingual Tonsils:

  • Location: B. Oropharynx

The lingual tonsils are located at the base of the tongue, also within the oropharynx. They are situated just posterior to the anterior lingual region.

Correct Answer is D

Explanation

A. NK cells and neutrophils: While NK cells can be found in lymph nodes, neutrophils are not typically housed in lymph nodes; they are more abundant in the bloodstream and tissues during acute inflammation.

B. Lymphocytes and neutrophils: Lymphocytes are indeed housed in lymph nodes, but neutrophils primarily migrate to sites of infection or inflammation rather than residing in lymph nodes.

C. NK cells and complement cells: Natural killer cells can be found in lymph nodes, but complement proteins are not cells; they circulate in the blood and become activated in response to pathogens.

D. Lymphocytes and macrophages: Lymph nodes primarily house lymphocytes (B cells and T cells) and macrophages, which play vital roles in the immune response by filtering lymph and

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