Rest Of Hormones Flashcards

1
Q

What sysnthesizes insulin in the body?

A

Beta cells of the pancreas

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2
Q

What is the function of insulin?

A

Insulin lowers blood sugar by bringing glucose into the cells, stimulating glycogenesis, and equalky inhibits protein and fat breakdown

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3
Q

How does insulin bring glsucose into the cell?

A

By means of changing the membrane characteristics when bound ti a cellular receptor

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4
Q

What is tye only homrone in the human body that reduces bloos sugar?

A

Insulin

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5
Q

How is insulin regulated?

A

By serum blood glucose.

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6
Q

Insulin is released in

A

Hyperglycemic states or in the presence if glucagon or gastrin

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7
Q

Insukin is inhibted in

A

Hypoglycemic states or some therapeutic drugs

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8
Q

What tyoe of hormone is leptin?

A

Glycoprotein hormone

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9
Q

What tyoe of hormone is insulin?

A

Protein hormone

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10
Q

What hormone balances appetite and energy?

A

Leptin

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11
Q

Leptin is synthesized in the body by

A

White adipocytes (fat cells)

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12
Q

Lewhat are white adipocytes?

A

These are cells of fat tissue (white adipose tissue)

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13
Q

This tissue’s cells produce leptin

A

White Adipose tissue

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14
Q

Leptin is released when stimulated by certain factors produced in the

A

Brain

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15
Q

List the functions of leptin

A
Targets the hypothalamus 
Sateity hormone
Inhibits appetite
Stimulates metabolism
Induces production of TNF and cell-death protein
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16
Q

Melatonin is produced by what tissue in the body?

A

Pineal gland of the brain

17
Q

Leptin and ,elatonin are hormones that target the

A

Hypothalamus

18
Q

What are the functions of melatonin?

A

Induces sleep, decreases attentive state, used as sleeping aid
Imhibits secretion of gonadotropins from pituitary
Decease cortisol levels

19
Q

Why are cortisol levels decreased at night?

A

Because at night, melatoninnlevels rise tomake us sleep

20
Q

Release of melatonin is induced by

A

Darkness

21
Q

Release if melatonin is inhibuted by

A

Light

22
Q

What direct connection in two areas regukate melatonin?

A

Direct connection between the retina and pineal gland

23
Q

Human chorionic gonadotropin is released by

A

The chorion and placenta

24
Q

The outer memebrane surrounding a developing embryo is called the

A

Chorion

25
Q

What are the functions of hCG?

A

Stimulates and maintains progesterone production by the corpus luteum until placenta forms, stimulates development of fetal gonads.

26
Q

Thisnhormone stimulates and sustains progesterone production by the corpus luteum until placenta forms

A

hCG

27
Q

What are the clinical uses of hCG?

A
  • Determine pregnancy
  • Predict abortion/miscarriage
  • Can detect multiple embryos
  • DetecthCG producing tumors
28
Q

When is hCG synthesized by the chorion?

A

1-2 days after fertilized egg implants into the endometrium

29
Q

The human placental lactogen is synthesized by the

A

Placenta

30
Q

What are the functions of HPL?

A
  • Works with hCG to stimulate progesterone production by CL
  • Anti-isulin, by raising blood sugar to ensure fetal nutruition/metabolism needs are met
  • Stimulates development of mammary glands and lactation in third trimester
31
Q

Why are pregnant women susceptible to diabetes?

A

Because the human placental hormone increases blood sugar so that fetal nutrition and metabolism needs are met

32
Q

What are the clinical uses of HPL?

A

Monitor placental function during pregnancy with maternal hypertension
Monitor intrauterine fetal growth