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PSL 300 > Lecture 15 > Flashcards

Lecture 15 Flashcards

1
Q

2 General Similarities between sexes

A
  1. Formation of gametes
  2. Hypothalamic/pituitary control of reproduction
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2
Q

GnRH

A

gonadotropin-releasing hormone

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3
Q

LH

A

Luteinizing Hormone

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4
Q

FSH

A

Follicle-stimulating hormone

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5
Q

Human body cells have ____ chromosomes, while human gametes (sperm or eggs) have ___ chromosomes each

A

46
23

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6
Q

GnRH secreted in pulses from _____________ cells in hypothalamus

A

neuroendocrine

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7
Q

Pulsatility

A

is a function of maximum flow rate

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8
Q

Sertoli cells (sustentacular cells)

A

Support sperm development

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9
Q

Leydig cells (interstitial cells)

A

Secrete testosterone

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10
Q

________________ are Responsible for blood-testis barrier

A

tight junctions

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11
Q

Sperm are produced in the ________ and further mature in the _________

A

testies
epididymis

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12
Q

Spermatozoa

A

(sperm) are the male sex cells that carry a man’s genetic material

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13
Q

Acrosome

A

a unique membranous organelle located over the anterior part of the sperm nucleus (derived from the golgi apparatus)

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14
Q

What does the acrosome contain?

A

contains hyaluronidase and acrosin which breakdown the zona pellucida

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15
Q

Zona pellucida

A

a glycoprotein coat that covers the oocyte

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16
Q

Role of FSH

A

stimulates Sertoli cells which then
Support sperm development

17
Q

inhibitors of FSH secretion

A

(Through negative feedback- FSH is inhibited by overproduction of a product)
Sertoli cells- in men
granulose cells in woman

18
Q

Secrete androgen-binding protein

A

Helps to concentrate androgens in testis

19
Q

Role of LH

A

stimulates Leydig cells which then
Secrete testosterone in response to LH

20
Q

Hypogonadism

A

occurs when the body’s sex glands (gonads- testies/ovaries) produce little or no hormones

21
Q

What does hypogonadism in males cause?

A

decreased production of androgens, inhibin B, AMH and/or impaired sperm production

PSL 300 (24 decks)

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