Hormones Flashcards

1
Q

Where is Human Chorionic Gonadotropin (HCG) produced?

A

Placenta

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2
Q

What is the role of human chorionic gonadotropin (HCG)?

A
  • Produced after implantation
  • Supports corpus luteum
  • Detected by pregnancy
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3
Q

Where is progesterone produced?

A
  • Ovaries
  • Corpus luteum, then placenta during pregnancy
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4
Q

What is the role of progesterone?

A
  • Stimulates angiogenesis
  • Inhibits uterine contractions
  • Strengthens pelvic wall muscles
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5
Q

Where is Oestrogen produced?

A
  • Ovaries
  • Placenta during pregnancy
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6
Q

What is the role of oestrogen?

A
  • Maintenance & growth of uterus
  • Helps foetal organ development
  • Regulates production of other hormones
  • Stimulates breast growth & milk duct development
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7
Q

Where is prolactin produced?

A

Pituitary gland

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8
Q

What is the role of prolactin?

A
  • Enlargement of mammary glands
  • Production of breast milk
  • Progesterone inhibits prolactin during pregnancy
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9
Q

Where is relaxin produced?

A

Placenta

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10
Q

What is the role of relaxin?

A
  • Inhibits uterine contractions to prevent premature birth
  • Increases blood flow to placenta
  • Relaxes & softens pelvis during birth
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11
Q

Where is oxytocin produced?

A

Pituitary gland

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12
Q

What is the role of oxytocin?

A
  • Stimulates uterine contractions
  • Triggers prostaglandin production
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13
Q

Where is follicle stimulating hormones (FSH) produced?

A
  • Anterior pituitary
  • Through action of GnRH
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14
Q

What is the role of follicle stimulating hormone (FSH)?

A
  • Stimulates production of sperm in seminiferous tubules of testes
  • Stimulates development of follicular granules cells of Graafian follicle
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15
Q

Where is luteinising hormone (LH) produced?

A

Anterior pituitary

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16
Q

What is the role of luteinising hormone (LH)?

A
  • Stimulates Leydig cells of testes to produce testosterone
17
Q

Where is gonadotropin releasing hormone (GnRH) produced?

A

Hypothalamus

18
Q

What is the role of gonadotropin releasing hormone (GnRH)?

A
  • Triggers release of FSH & LH
19
Q

Where is testosterone produced?

A

Leydig cells of testes

20
Q

What is the role of testosterone?

A

Development & function of male reproductive system:
- Stimulates spermatogenesis in presence of androgen-binding protein
- Associated with sex drive & make aggression
- Responsible for male secondary sexual characteristics, such as growth of body hair, antlers etc.

21
Q

Where is androsterone produced?

A

Leydig cells in testes

22
Q

Where is the sex hormone-binding globulin (SHBG) produced?

A
  • Liver
23
Q

What is the role of the sex hormone-binding globulin (SHBG)?

A
  • It is a glycoprotein in blood that binds to androgens & oestrogens
  • It acts to limit exposure to both androgens & oestrogens
24
Q

Where is inhibin produced?

A

Sertoli cells in testes

25
Q

What is the role of inhibin?

A
  • Secreted when they are low on nutrients to nourish developing sperm cells
  • Acts as negative feedback as it regulates FSH synthesis & inhibits FSH secretion