Hormones Flashcards

1
Q

5 hormone signals:

A
  1. Chemical synthesis/release
  2. Survival (stay low key)
  3. Proliferate
  4. Differentiate
  5. Apoptosis
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2
Q

Fat soluble hormones

A

Steroids derived from lipids [cholesterol], estrogen, testosterone, progesterone
-Able to cross cell membrane and bind to internal receptors

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3
Q

Water soluble hormones

A

Amino acids - made of short chains
Polypeptides - long chains of amino acids
NOT able to cross cell membrane, relies on receptors to work

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4
Q

Hypothalamic-Pituitary-Gonadal Axis

A

The hypothalamus (GnRH), pituitary gland (FSH and LH), and gonadal glands (inhibin), collectively. Connection between nervous and endocrine system.

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5
Q

(Anterior) Pituitary Gland

A

“Master” endocrine gland. Receives signal from hypothalamus and secretes FSH (follicle stimulating hormone) and LH (Luteinizing Hormone)

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6
Q

Hypothalamus

A

Releases Gonadotropin-releasing factor (GnRH) which is received by the anterior pituitary gland.

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7
Q

FSH

A

Follicle stimulating hormone.
In males, affects spermatogenesis and sertoli cells. Ihnibits LH.

In females, important for maintaining the survival of follicles.

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8
Q

LH

A

Leuteinizing hormone.
In males, acts on leydig cells to aid in testosterone production.

In females, important for estrogen production.

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9
Q

5DHT

A

Steroid vital for full closure of the scrotal sac (hypospadia).

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10
Q

Estradiol

A

Steroid found in leydig cells that maintain bone density and help w/ maturation of sperm in epididymis in men, and developing follicle in women.

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11
Q

Progesterone

A

Steroid secreted by the granulosa cells after ovulation. Mature follicle releases oocyte and post ovulation granulosa cell becomes an endocrine organ which releases progetserone (corpus luteum).

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