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Endocrine > Hypothalamus > Flashcards

Hypothalamus Flashcards

1
Q

What does Gonadotropin releasing hormone act on

A

Luteotropes and folliculotrops

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2
Q

What does dopamine do

A

acts on lactotrophs to inhibit AP production of prolactin

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3
Q

What are the 3 parts of the adenohypophysis

A

pars distalis pars intermedia pars tuberalis

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4
Q

What regulates ADH

A

Osmoreceptors, blood vol, stress, circadian rhythm

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5
Q

Hypothalmus role

A

Secretion of regulating hormone Synthesis of hormone Communicates with pituitary gland

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6
Q

What stimulates oxytocin production

A

suckling

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7
Q

What’s another name for posterior pituitary

A

neurohypophysis

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8
Q

Does the neurohypophysis release or synthesize OT and ADH

A

Neurohypophysis releases OT and ADH

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9
Q

Primary function of hypothalamus

A

site of hormone production

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10
Q

What does growth hormone inhibitory hormone act on

A

Somatotrophs

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11
Q

How are hormones transported from the hypothalamus to the anterior pituitary

A

Portal vessels

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12
Q

What is the target of prolactin

A

milk producing cells

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13
Q

What does GnRH do

A

Stimulate AP production of FSH and LH

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14
Q

What is the only hormone under inhibitory control

A

Prolactin

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15
Q

What does Corticotropin releasing hormone do

A

Acts on corticotrophs to stimulate AP production of ACTH

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16
Q

What does oxytocin do

A

stimulate smooth muscle contraction uterine contraction and milk let down

17
Q

What does diabetes do to ADH

A

lack of responsiveness to ADH Excessive urination, dehydration, and thirst

18
Q

What is another name for anterior pituitary

A

Adenohypophysis

19
Q

What is the target of oxytocin

A

Muscle cells

20
Q

What does prolactin do

A

stimulate milk production

21
Q

What does growth hormone releasing hormone act on

A

Somatotrophs Stimulates AP production of Growth hormone

22
Q

What does ADH to blood pressure

A

Increases blood pressure

23
Q

How similar is GnRH across species

A

Very similar in different species

24
Q

What is oxytocin’s role in males

A

Unclear, secreted during ejaculation Promotes contraction of ductus deferens

25
Q

What does Thyrotropin releasing hormone do

A

Acts on thyrotrophs of AP to stimulate TSH (thyroid stimulating hormone)

26
Q

what is the primary function of posterior pituitary

A

Site of hormone storage and release

27
Q

How how are hormones transported from the hypothalamus to the posterior pituitary

A

Axons

28
Q

What does the hypothalamus communicate with

A

Pituitary gland

29
Q

What is inhibits oxytocin

A

Progesterone

30
Q

What two important hormones does the neurohypopphysis make

A

Oxytocin antidiuretic hormone (ADH)

31
Q

What kind of tissue is the hypothalamus composed of

A

neural

32
Q

What does ADH act on

A

Kidney (decrease urine output, increase water reorbtion)

Endocrine (18 decks)

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