Endocrine 2 Flashcards
Why are endocrine organs richly supplied with blood vessels
Because hormones must be carried to their target organs by bloodsteam
Name 6 of the better known endocrine organs
- Pituitary body 2. Thyroid gland 3. Parathyroid gland 4. Pancreatic islets 5. Suprarenal (adrenal) glands 6. Gonads (ovaries, testes)
Describe pituitary body
small pea-sized, pea shaped structures; 2 glands, posterior and anterior
Where is pituitary body located?
base of brain near hypothalamus, base of cranial cavity floor.
Describe posterior pit. gl.
portion of which comes from & retains connection with base of brain.
Where are the hormones of the pit. gl. produced
Hypothalamus of brain
What are the hormones of the posterior pit.gl.?
- ADH-reabsorption of water within kidneys. (response to thirst. 2. Oxytocin-contraction of smooth muscle of uterus & milk production.
Where does anterior pit. gl. originate?
Roof of embryo’s mouth, attaches to posterior pit. gl.
How is anterior pit. gl. connected to hypothalamus?
A venous portal system
What are produced in the hypothalamus?
Chemical known as releasing factors
Because hormones must be carried to their target organs by bloodsteam
Why are endocrine organs richly supplied with blood vessels
- Pituitary body 2. Thyroid gland 3. Parathyroid gland 4. Pancreatic islets 5. Suprarenal (adrenal) glands 6. Gonads (ovaries, testes)
Name 6 of the better known endocrine organs
small pea-sized, pea shaped structures; 2 glands, posterior and anterior
Describe pituitary body
base of brain near hypothalamus, base of cranial cavity floor.
Where is pituitary body located?
portion of which comes from & retains connection with base of brain.
Describe posterior pit. gl.
