CH 17 Endocrine Part 1 Flashcards
CH 18
The endocrine system transmits hormones through?
Blood
Is endocrine system local or widespread?
Widespread
When does hormonal stimulation release a hormone?
In response to another hormone
When does humoral stimulation release a hormone?
In response to changes to nutrient levels or ions in the blood
When does nervous system stimulation release a hormone?
In response to stimulation to the nervous sytstem
In humoral stimulation what is in charge of controlling blood glucose levels?
Pancreas
Steroids are what type of molecules?
Lipid-soluble
What is a biogenic amine?
Modified amino acid
Are biogenic amines water soluble?
Yes, except TH (thyroid hormone)
What are proteins made of?
Water soluble chains of amino acids
How do lipid soluble hormones move in blood?
Use carrier molecules
When is glucagon released?
When blood sugar is low
Where is glucagon released?
Pancreas
When is oxytocin released?
During labor and delivery
Where is oxytocin released?
Posterior pituitary gland
What is up regulation?
Cells are given more receptors due to low hormone levels
What is down regulation?
Cells reduce receptors due to high hormone levels
What hormones are found in the posterior pituitary gland?
- Oxytocin
2. ADH
Functions or oxytocin? ***
- Cause uterus to contract
- Cause mammary glands to produce milk
- Love hormone
Where are the hormone in the pituitary gland made?
Hypothalamus
What is the function of ADH (vasopressin)? ***
- Decrease urine production
- Stimulate thirst
- Constricts blood vessels
