ANS final
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| ans consists of motor neurons that? | innervate smooth and cardiac muscle and glands; make adjustments to ensure optimal support for body activites, subconscious
🗑
|
||||
| parasympathetic division | conserves body energy, restin and digestion
🗑
|
||||
| sympathetic division | fight or flight system, adjustments during exercise
🗑
|
||||
| sympathetic tone (vasomotor tone) | keeps blood vessels in continual state of partial constriction, even at rest
🗑
|
||||
| receives only sympathetic fibers | adrenal medulla, sweat glands, arrector pilli, kidneys, most blood vessels
🗑
|
||||
| sympathetic system controls? | thermoregulatory responses to heat, release of relin from kidneys, metabolic effects (increases metabolic rate of cells, raises blood glucose, mobilizes fats for fuel)
🗑
|
||||
| parasympathetic tone | slows heart, dictates normal activity levels of digestive and urinary tract; can be overridden by sympathetic division during stress
🗑
|
||||
| cooperative effects | parasympathetic fibers cause erection (vasodilation); sympathetic cause ejaculation of semen and reflex contraction
🗑
|
||||
| parasympathetic effects vs. sympathetic effects | para is short lived, highly localized over effectors; sympathetic is long lasting, bodywide effects
🗑
|
||||
| visceral reflex arc | stimulus,sensory receptor in viscera, visceral sensory neuron, integration (progangliionic, dorsal horn, w/in wall of gi tract), efferent pathway (2 neuron chain), visceral effector, response
🗑
|
||||
| referred pain? | visceral pain afferents travel aong the same pathways as somatic pain fibers, causing referred pain
🗑
|
||||
| neurotransmitter released by cholinergic fibers | Acetylcholine; by all ans preganglionic axons and all parasympathetic postganglionic axons
🗑
|
||||
| neurotransmitter released by adrenergic fibers | norepinephrine; by most sympathetic postgangliionic axons, except sweat glands and some blood vessels in skeletal muscles
🗑
|
||||
| cholinergic receptors that bind ACh | nicotinic, muscarinic
🗑
|
||||
| where are nicotinic receptors found? | motor end plates of skeletal muscle cells, all ganglionic neurons, hormone producing cells of adrenal medulla
🗑
|
||||
| where are muscarinic receptors found? | on all parasympathetic target organs, all effector cells stimulated by postganglionic cholinergic fibers
🗑
|
||||
| types of adrenergic receptors? | alpha and beta; effects of NE depend on which subclass of receptor predominates on the target organ
🗑
|
||||
| what is atropine? | anticholinergic; blocks muscarinic receptors (used in war). prevents salivation during surgery, dialate pupils
🗑
|
||||
| what is neostigmine? | inhibits acetylcholinesterase; used to treat myasthenia gravis
🗑
|
||||
| effect of OTC drugs? | stimulate adrenergic receptors
🗑
|
||||
| effect of beta blockers? | drugs that attach to B2 receptors to dilate lung bronchioles in asthmatics
🗑
|
||||
| why is sympathetic activation long lasting? | because NE is inactivated more slowly than ACh, NE and epinephrine are released into the blood and remain until destroyed by liver
🗑
|
||||
| what controls ANS functioning? | hypothalamus; subconscious cerebral input via limbic lobe connections influences hypothalamic function, cerebral cortex, reticular formation, spinal cord
🗑
|
||||
| how does alcohol effect brain? | desensitizes neurotransmittor receptors
🗑
|
||||
| why does ANS efficiency decline with age? | due to structural changes at preganglionic axon terminals
🗑
|
||||
| why is orthostatic hypotension present in old age? | aging pressure receptors respond less to changes in blood pressure w/changes in body position and because of slowed responses by sympathetic vasoconstrictor centers
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
hberglund
Popular Anatomy sets