-
Homeostasis
The maintenance of a constant internal state in your body regardless of any eternal or internal disturbances
-
negative feedback mechanism
- inverted amplifier- works against disturbance and doesn't amplify it
- ex. perspiration
-
positive feedback mechanism
- body doesn't recognize disturbance is bad so it amplifies it
- ex. congestive heart failure
-
-
efferent
away from CNS to effector organ (muscle, gland)
-
ans organization
sensory division--> PNS--> CNS--> PNS--> motor division--> ANS
-
sympathetic vs parasym. neurons
- sym- short pregang neurons and long post
- parasym- long pre and short post
-
all preganglionic nerves are...
cholinergic
-
postganglionic neurons of parasym are...
cholinergic
-
postganglionic neurons of sympathetic are...
adrenergic
-
cholinergic receptors
receptors that bind to Ach
-
nicotinic receptors
- cholinergic
- location- post gang neurons, adrenal medulla cells, skeletal muscle cells
- effect- always stimulatory
-
muscarinic receptors
- cholinergic
- location- all parasympathtetic target organs, some sym target organs (sweat glands, blood vessels in skeletal muscle)
- effect- inhibitory or stimulatory
-
adrenergic receptors
- receptors that bind to norepinephrine
- alpha-generallys stimulatory
- beta- generally inhibitory
-
growth hormone
- humoral
- breaks down glucose for energy and aids growth
-
thyroid hormone
- hormonal
- raises BMR and body temp
-
parathyroid hormone
- humoral
- regulates calcium levels in blood
-
andrenocorticotropic hormone
- humoral
- increases levels of blod glucocorticoids
-
aldosterone
- humoral
- plasma sodium levels
-
pancreatic hormones
- humoral
- regulates palama glucose
-
|
|
