Question

write the place of the secretion and the function of LH

Answer 1

Luteinizing hormone (LH, also known as lutropin and sometimes lutrophin[1]) is a hormone produced by gonadotropic cells in the anterior pituitary gland. In females, an acute rise of LH ("LH surge") triggers ovulation[2] and development of the corpus luteum. In males, where LH had also been called interstitial cell–stimulating hormone(ICSH),[3] it stimulates Leydig cell production of testosterone.[2] It acts synergistically with FSH.

Answer 2

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Structure-

The pituitary gland is a pea-sized gland that sits in a protective bony enclosure called the sella turcica (Turkish chair/saddle). It is composed of three lobes:

the anterior, intermediate, and posterior lobes. In many animals, these lobes are distinct. However, in humans, the intermediate lobe is but a few cell layers thick and indistinct; as a result, it is often considered as part of the anterior pituitary.

In all animals, the fleshy, glandular anterior pituitary is distinct from the neuralcomposition of the posterior pituitary.

The anterior pituitary is composed of three regions:

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Function--
The anterior pituitary contains five types of endocrine cell, and they are defined by the hormones they
secrete: somatotropes (GH); Lactotropes (PRL); gonadotropes (LH and FSH); corticotropes (ACTH) and thyrotropes(TSH).

It also contains non-endocrine folliculostellate cells which are thought to stimulate and support the endocrine cell populations.

Hormones secreted by the anterior pituitary are trophic hormones (Greek: trophe, “nourishment”) and tropic hormones.

 Trophic hormones directly affect growth either as hyperplasia or hypertrophy on the tissue it is stimulating. Tropic hormones are named for their ability to act directly on target tissues or other endocrine glands to release hormones, causing numerous cascading physiological responses.

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