Hypothalamus Flashcards

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1
Q

How many major hormones does it produce?

A

3

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2
Q

What are the three major hormones produced by the hypothalamus?

A

ADH - Antidiuretic hormone
GnRH - Gonadotropin Releasing Hormone
Oxytocin

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3
Q

What is another name for ADH?

A

vasopressin

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4
Q

What type of hormone is ADH?

A

Protein hormone

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5
Q

What does ADH do?

A

Helps retain water by increasing the permeability of the distal tubule in the nephron

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6
Q

What does increasing the permeability of the distal tubule accomplish?

A

Increases the amount of water that is reabsorbed into the blood stream

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7
Q

What does ADH target?

A

Kidneys

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8
Q

Is ADH a target or non-target hormone?

A

Target

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9
Q

Does ADH give negative or positive feedback?

A

Negative

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10
Q

Where is ADH stores?

A

The pituitary gland

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11
Q

What kind of receptors are located in the pituitary gland?

A

Osmoreceptors

-> monitors water pressure in the body

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12
Q

When is ADH released?

A

When water levels/water balances are too low

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13
Q

What is the nick name for the hypothalamus?

A

“The master gland’s master”

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14
Q

What type of hormone is oxytocin?

A

Protein hormone

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15
Q

Other than a hormone what can oxytocin act as?

A

A neurotransmitter

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16
Q

What function of the brain does oxytocin help with?

A

The formation of memories

17
Q

Where is oxytocin stored?

A

The pituitary gland

18
Q

What causes the increase of amounts of oxytocin?

A

Increases gradually during pregnancy

19
Q

When does the amount if oxytocin produced spike?

A

Right before and during birth

20
Q

What effect does oxytocin have on the body

A

Causes muscular contractions in the uterus

21
Q

What part of the body (other than the brain) does oxytocin effect?

A

The uterus

22
Q

Does oxytocin give positive or negative feedback?

A

Positive feedback

23
Q

Is oxytocin a target or non-target hormone?

A

Target

24
Q

What is the chain of events created while giving birth? (7)

A

The head of the baby pushes on the cervix –> baroreceptors are set off –> sends a signal to the hypothalamus –> sends a signal to the pituitary gland –> releases oxytocin –> contraction occurs

The cycle continues until the baby is born

25
Q

What type of hormone is GnRH?

A

Protein hormone

26
Q

Does GnRH give negative or positive feedback?

A

Negative feedback

27
Q

Is GnRH a target or non-target hormone?

A

Target

28
Q

What does target?

A

Stimulates the pituitary gland

29
Q

What hormones are released by the pituitary gland when stimulated by GnRH?

A

LH and FSH

30
Q

When in the human life cycle is GnRH released?

A

When we hit puberty