Landmark dermatomes and clinical reflexes 0425 Flashcards
FA page 453-4
C2
posterior half of skull “cap”
C3
high turtleneck shirt
C4
low collar shirt
T4
nipple
T7
xiphoid process
T10
umbilicus
*early appendicitis referred pain
L1
inguinal ligament
L4
includes kneecaps
S2,3,4
erection and sensation of penile and anal zones
phrenic nerve
diaphragm and gallbladder pain referred to RIGHT shoulder via phrenic nerve
Achilles reflex
S1 nerve root
[S1,2]
patellar reflex
L4 nerve root
[L3,4]
biceps reflex
C5 nerve root
[C5,6]
triceps reflex
C7 nerve root
[C7,8]
babinski reflex
dorsiflexion of big toe and fanning (extension) of other toes.
normal reflex in 1st year of life.
sign of UMN lesion after that.
moro reflex
primitive reflex.
“hang on for life” - abduct/extend limbs when startled, then draw together.
rooting reflex
primitive reflex.
movement of head toward one side if cheek or mouth is stroked - nipple seeking.
sucking reflex
primitive reflex.
sucking response when roof of mouth is touched.
palmar reflex
primitive reflex.
curling of fingers if palm of hand is stroked
babinski reflex
primitive reflex.
dorsiflexion of big toe and fanning of other toes with plantar stimulation.
aka plantar reflex.
galant reflex
primitive reflex.
stroking along one side of spine while newborn is in ventral suspension (face down) causes lateral flexion of lower body toward stimulated side.
general feature of primitive reflexes
normally disappear within 1st year of life.
may reemerge with FRONTAL lobe lesion.
