Overview Flashcards
1
Q
Hormone definition
A
Chemical messengers secreted by endocrine glands; responsible for specific regulatory effects on certain cells, tissues, or organs.
-either autocrine or paracrine
2
Q
Hormone function
A
- altering membrane permeability or potential
- stimulating synthesis of proteins
- activating/inhibiting enzymes
- changing a cell’s sensitivity to other hormones
3
Q
Endocrine System vs NS
A
- slow acting
- messages travel via hormones
- can act on tissues throughout the body
- effects can be long lasting
4
Q
Endocrine System
A
Affects:
- metabolism
- development
- H2O balance
- BP
- Ca2+ levels in blood
- gamete production
- exocrine, and other hormone secretion
5
Q
Endocrine organ glands
A
- thyroid gland (thyroid)
- parathyroid glands (next to thyroid gland)
- adrenal glands (on top of kidneys)
- pancreas (exocrine and endocrine)
- pineal gland (diencephalon)
- thymus gland (upper thorax)
- gonadal sex hormones (ovaries and testes)
6
Q
Non endocrine organs that produce hormones
A
- stomach: gastrin
- small intestine
- kidneys
- heart
- placenta
7
Q
Efficiency and age
A
- decreases with age
- increased lower metabolic rate
- increased cancer rates in some are
- increased chances of diabetes
- increased immune system depression
