Exam 2 Flashcards
inhibitory cells in horns of spinal cord
enhance fluidity of limb movement
sensory neurons
anterior motor neurons
interneurons
renshaw cells
renshaw cells
most numerous of the neurons
responsible for most of spinal cord integrative function
sensory neurons
anterior motor neurons
interneurons
renshaw cells
interneurons
neurotransmitter of UMN to LMN
GABA acetylcholine epinephrine glutamate glycine
glutamate
lower motor neurons terminate at effectors with _______ as neurotransmitter
GABA acetylcholine epinephrine glutamate glycine
acetylcholine
cranial nerves are unique ______
UMN
LMN
LMN
interneurons are mostly inhibitory, using ______ as the neurotransmitter
GABA acetylcholine epinephrine glutamate glycine
GABA
renshaw cells are inhibitory cells using ______ as the neurotransmitter
GABA acetylcholine epinephrine glutamate glycine
glycine
inhibit antagonist muscle
Ia inhibitory interneurons
Ib inhibitory interneurons
Ia
responsible for smooth contraction and protects muscle from tears
Ia inhibitory interneurons
Ib inhibitory interneurons
Ib
detect both dynamic and static changes in muscle length
muscle spindle (group Ia and II afferents) golgi tendon organ (group Ib afferents) pacinian corpuscles (group II afferents) free nerve endings (groups III and IV afferents)
muscle spindle
detect vibration
muscle spindle (group Ia and II afferents) golgi tendon organ (group Ib afferents) pacinian corpuscles (group II afferents) free nerve endings (groups III and IV afferents)
pacinian
detect noxious stimuli
muscle spindle (group Ia and II afferents) golgi tendon organ (group Ib afferents) pacinian corpuscles (group II afferents) free nerve endings (groups III and IV afferents)
free nerve endings
detect muscle tension
prevents tears
muscle spindle (group Ia and II afferents) golgi tendon organ (group Ib afferents) pacinian corpuscles (group II afferents) free nerve endings (groups III and IV afferents)
golgi tendon organ
somatic/myelinated fibers
A
B
C
A
lightly myelinated fibers
preganglionic fibers of ANS
A
B
C
B
unmyelinated
found in somatic and autonomic systems
A
B
C
C
which of the A nerve fiber types is largest?
alpha
beta
delta
gamma
alpha
sensory group _____ afferents send signal to excitatory interneurons that send ipsilateral and contralateral signals
I II III IV V
III
innervated by group Ia and II afferents
muscle spindle
golgi tendon organ
pacinian corpuscles
free nerve endings
muscle spindle
innervated by only group Ib afferents
muscle spindle
golgi tendon organ
pacinian corpuscles
free nerve endings
golgi tendon organ
innervated by only group II afferents
muscle spindle
golgi tendon organ
pacinian corpuscles
free nerve endings
pacinian corpuscles
innervated by group III and IV afferents
muscle spindle
golgi tendon organ
pacinian corpuscles
free nerve endings
free nerve endings