Week 1 Flashcards
(10 cards)
if only the LMN is working, what can trigger a reflex action?
muscle lengthening, noise, stress
what happens if the UMN is not working?
the LMN will respond to any stimuli, as the UMN can inhibit or choose not to respond to certain stimuli, therefore people with a lesion to the UMN will have increased tone
symptoms of a peripheral nerve lesion
no increase in muscle tone
no activity in muscle, if wholly supplied by that nerve
types of sensation loss
vague, global, diffuse, on one side
how many cervical vertebrae
7
how many thoracic vertebrae
12
how many lumbar vertebrae
5
how many sacral vertebrae
5 segments
how many coccygeal vertebrae
4 segments
sacrum vs coccyx
5 vs 4 fused vertebrae
sacrum has 4 pairs sacral foramina
sacrum articulates with L5 and coccyx
coccyx may weight bare when sitting, and is attachment point for glute max and coccygeal muscles.
