Answer:an airway leading from the nose to the treachea.
Explanation:
The correct option is D.
Both carbohydrates and fat produce energy within the cell, but the amount of energy produce by fat for each one gram of food is much more than that of carbohydrate. Fat in the food is absorbed into the body in form of triglycerides.
The temperature is equal in both.
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Answer: G
Explanation: A galaxy is indeed a collection of stars, gas, and dust held together by gravity.
Sertoli cells are stimulated by <u>FSH</u>, while leydig cells are stimulated by<u> LH.</u>
<h3>Sertoli and Leydig Cells:</h3>
The creation of T is stimulated by LH in Leydig cells, while the production of regulatory molecules and the nutrients required for maintaining spermatogenesis are stimulated by FSH in Sertoli cells in concert with T. As a result, Sertoli cells indirectly control spermatogenesis via T and FSH.
The growth and maintenance of the male reproductive system and spermatogenesis depend on LH-stimulated Leydig cell androgen synthesis. The interstitial cells of Leydig, which are concentrated heavily in the testis of newborn boys and adult males following puberty, release testosterone. Interstitial cells are another name for Leydig cells. The interstitial spaces outside of seminiferous tubules are where they can be found.
Learn more about Sertoli and Leydig cells here:
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