Quiz 2 Last years Flashcards

1
Q

Neurohormone

A

a hormone that is secreted directly from a neuron into the blood

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2
Q

Hypophysectomy

A

removal of the pituitary gland

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3
Q

Luteolysis

A

regression of the corpus luteum

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4
Q

Acidophil

A

cells with cytoplasmic granules that stain readily with acid dyes

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5
Q

Cryptorchidism

A

failure of the mammalian testes to descent into the scrotum

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6
Q

Mention the cause, genotype and phenotype (tubular tract, external genitalia and brain behavior) of testicular feminization syndrome

A

Genotype- XY
Gonads- Testes
Reproductive hormones- Testosterone and Antimullerian hormone but no testosterone receptor activity
Tubular tract- no male or female tract
external genitalia- female
brain- male

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7
Q

The function of Wilms tumor Gene

A

suppresses Steroid factor 1 to avoid the development of steroidogenic cells instead of supporting cells

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8
Q

Function of SOX9

A

determines sex- male formation of Sertoli cells which form the testes

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9
Q

Function of 5 alpha-reductase enzyme

A

converts testosterone into dihydrotestosterone which helps develop the male external genitalia

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10
Q

Function of aromatase enzyme

A

turns testosterone into estrogen

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11
Q

Function of antimullerian hormone (AMH)

A

inhibits the development of the female tract (Mullerian tract)

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12
Q

Diagram how sexual development of the brain is achieved in males

A

Testes
testosterone
goes into the brain
aromatase turns it into estrogen

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13
Q

Diagram how sexual development of the brain is achieved in females

A

Ovaries
estrogen
alpha fetoprotein binds to estrogen to prevent it from entering the brain blood barrier

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14
Q

Mention the function and location of stereocilia in the male genital tract

A

facilitate concentration and maturation of sperm cells by increasing surface area
Location- lining of epididymis

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