Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
|
Hypothalamus and pituitary gland
|
- form a unit regulating the release of hormones from other "peripheral glands"
|
|
|
Negative feedback loops
Problems |
-maintain the hormones from the peripheral glands wtihin a range associated with normal regulation of functions
-problems: mild dysfunction to incapacitatind disease may result if one of these hormones is out of normal range |
|
|
Delivery of hypotalamic factors controlling the anterior pituitary is via...
|
portal circulation
|
|
|
Delivery of hypothalamic factors regulating theposterior pituitary is via..
|
supraoptic and paraventricular neurons
|
|
|
"primary"
|
- if pathological amt of hormone arises from dysfunction in the peripheral gland making the hormone
|
|
|
"secondary"
|
- if cause arises form a pathology in the pituitary, the hypothalamus, or elseware
|
|
|
"inappropriate relationship"
|
- if hormone level is not in the normal range, and apituitary hormone promoting its release is in the normal range, then the level of the pituitary hormone may not be approrpiate
- may indicate a pathology is present in the pituitary or in a mechanism regulating pituitary function |
|
|
Hypothesis that hypothalic hormones that regulate anterior pituitary function
|
- hypothalamic hormones acting on the anterior pituitary may have other functions (not accepted yet/future)
|
|
|
PRF: Prolacting Releasing factor
(Hypothalamus) |
+Prolactin--> Breast
DA: Dopamine --> neg Prolactin (Anterior Pituitary) |
|
|
GnRH: Gonadotrophin RH
(Hypothalamus) |
+ FSH: Follicle stimulating H+ --> gonads
+LH: Lutenizing Hormone --> gonads (Anterior Pituitary) |
|
|
TRH: Thyrotropin RH
(Hypothalamus) |
+ TSH: Thyroid stimulating hormone --> Thyroid
(Anterior Pituitary) |
|
|
CRH: Corticotropin RH
(Hypothalamus) |
+ ACTH: Adrenocorticotrophic hormone --> Adrenal cortex
(Anterior Pituitary) |
|
|
GHRH: Growth Hormone Releasing Hormone
(Hypothalamus) |
+ GH: Growth hormone --> liver and other tissues
SS: Somatostatin --> neg Growth hormone (Anterior Pituitary) |
|
|
Supraoptic and Paraventricular neurons
(Hypothalamus) |
Oxytocin --> uterus, breast
ADH: Antidiuretic hormone or vasopressin --> Kidneys and blood vessels (Posterior pituitary) |
