Pituitary Gland (pg 4)
Pituitary Gland (pg 4)
• The size of a pea
• Hangs below the hypothalamus of the brain.
Sits in the “Turk’s saddle” of the...
Anterior pituitary (Adenohypophysis)
• Makes 6 hormones, 4 of which are tropic
hormones (meaning they stimulate other
endo...
1. Growth Hormone (GH): Stimulates target
cells to grow in size and to divide
Target tissue: Bones and skeletal muscles
1. Growth Hormone (GH): Stimulates target cells to
grow in size and to divide
Target tissue: Bones and skeletal muscles
Hy...
2. Prolactin (PRL): Promotes development of
milk glands in breasts and stimulates milk
production after childbirth. No kno...
3. Adrenocorticotropic Hormone (ACTH):
Regulates hormone production of the cortex
portion of the adrenal glands. Stimulate...
4. Thyroid stimulating hormone: Controls
growth and activity of the thyroid gland
5 & 6. Gonadotropic hormones: Regulate hormonal
activity of the gonads (testes and ovaries)
5. Follicle-stimulating hormon...
Posterior Pituitary (Neurohypophysis)
• Does not make the hormones it releases. They
are made by the hypothalamus and the
...
Posterior Pituitary (Neurohypophysis)
• Does not make the hormones it releases. They
are made by the hypothalamus and the
...
Posterior Pituitary (Neurohypophysis)
• Does not make the hormones it releases. They
are made by the hypothalamus and the
...
1. Oxytocin: Stimulates contractions of the
uterus during childbirth and ejection of milk
during nursing
2. Antidiuretic hormone (ADH): Causes the
kidneys to reabsorb more water, decreasing
urine volume. Increases blood pressur...
Diagram (pg 5)
Upcoming SlideShare
Loading in …5
×

Pituitary gland

1,006 views

Published on

Pituitary Gland

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
1,006
On SlideShare
0
From Embeds
0
Number of Embeds
222
Actions
Shares
0
Downloads
8
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Pituitary gland

  1. 1. Pituitary Gland (pg 4)
  2. 2. Pituitary Gland (pg 4) • The size of a pea • Hangs below the hypothalamus of the brain. Sits in the “Turk’s saddle” of the sphenoid bone • Controlled by the hypothalamus • Consists of 2 lobes: The anterior pituitary is made of glandular tissue and the posterior pituitary is made of nervous tissue
  3. 3. Anterior pituitary (Adenohypophysis) • Makes 6 hormones, 4 of which are tropic hormones (meaning they stimulate other endocrine glands) • Called the “master endocrine gland” • Controlled by hormones produced by the hypothalamus
  4. 4. 1. Growth Hormone (GH): Stimulates target cells to grow in size and to divide Target tissue: Bones and skeletal muscles
  5. 5. 1. Growth Hormone (GH): Stimulates target cells to grow in size and to divide Target tissue: Bones and skeletal muscles Hyposecretion (not enough hormone) Pituitary dwarfism Hypersecretion (too much hormone) in childhood Gigantism Hypersecretion in adulthood Acromegaly (large facial bones, hands, and feet)
  6. 6. 2. Prolactin (PRL): Promotes development of milk glands in breasts and stimulates milk production after childbirth. No known function in men.
  7. 7. 3. Adrenocorticotropic Hormone (ACTH): Regulates hormone production of the cortex portion of the adrenal glands. Stimulates melanocytes in the skin to produce more melanin.
  8. 8. 4. Thyroid stimulating hormone: Controls growth and activity of the thyroid gland
  9. 9. 5 & 6. Gonadotropic hormones: Regulate hormonal activity of the gonads (testes and ovaries) 5. Follicle-stimulating hormone (FSH) Females: Stimulates follicle development in the ovaries Males: Stimulates sperm development 6. Luteinizing hormone (LH) Females: Triggers ovulation Males: Stimulates testosterone production by the interstitial cells of the testes
  10. 10. Posterior Pituitary (Neurohypophysis) • Does not make the hormones it releases. They are made by the hypothalamus and the posterior pituitary stores them
  11. 11. Posterior Pituitary (Neurohypophysis) • Does not make the hormones it releases. They are made by the hypothalamus and the posterior pituitary stores them • Controlled by nerve impulses from the hypothalamus
  12. 12. Posterior Pituitary (Neurohypophysis) • Does not make the hormones it releases. They are made by the hypothalamus and the posterior pituitary stores them • Controlled by nerve impulses from the hypothalamus • Releases 2 hormones
  13. 13. 1. Oxytocin: Stimulates contractions of the uterus during childbirth and ejection of milk during nursing
  14. 14. 2. Antidiuretic hormone (ADH): Causes the kidneys to reabsorb more water, decreasing urine volume. Increases blood pressure by causing constriction of the arterioles. Secretion of ADH is inhibited by alcohol Hyposecretion diabetes insipidus Hypersecretionhigh blood pressure
  15. 15. Diagram (pg 5)

×