L7 Nervous System Flashcards
ANS is divided into _____ system and _____ system which acts _______.
parasympathetic
sympathetic
antagonistically
ANS regulates ____ body activities, it is _____ and has 2 parts- ____ motor and______ sensory.
involuntary
unconscious
visceral
Sympathetic nervous system starts from the _____ of the ______.
middle
spinal cord
Parasympathetic nervous system starts at the top of the ______ / at the _____ of the _____.
brain stem
bottom
spinal cord
All the neurons in sympathetic NS are in lateral horn of gray matter from ___ - ____.
T1, L2
Sympathetic NS causes:
-pupils to ____
-______ heartbeat
-blood pressure ____
dilate
increased
rises
Sympathetic NS neurotransmitters are ______ and _____ which are mainly secreted by _____ nerve endings.
adrenaline ( epinephrine )
noradrenaline ( norepinephrine)
postganglionic
All preganglionic neurons of parasympathetic NS are in cranial nerves __________ and in lateral horn of gray matter from ____-_____.
III,VII,IX,X
S2,S4
Cranial outflow of parasympathetic NS:
III-pupils ___
VII- _____
XI-___ salivary gland
X- ____ organs of thorax and abdomen
constrict
tears,saliva
parotid
visceral
Sacral outflow of parasympathetic NS- form _____ nerves
-supply ____ half of large intestine
-supply all the ____ organs
pelvic splanchnic
2nd
pelvic
neurotransmitters released from the preganglionic synapse of both NS is ______.
acetylcholine
Neurotransmitters released from the postganglionic synapse of parasympathetic NS is ________ or _____.
acetylcholine
nitric oxide
Neurotransmitters released from the postganglionic neuron of the sympathetic NS is _____.
norepinephrine
_______ response is activated in parasympathetic NS.
Rest and digest
______ response is activated in sympathetic NS.
Fight or flight
