spinal cord and nerve Flashcards
what comes from the mesoderm?
nervous system
what forms the neural tube?
neural plate
how many spinal nerves are there?
31!
what are the 5 groups of spinal nerves?
C - 8
T - 12
L - 5
S - 5
C - 1
how is c1 special?
it goes out into the skull, innervates the suboccipitals
ventral nerve roots are in charge of?
motor system
dorsal nerve roots are in charge of the?
sensory system
what does the ventral rami innervate?
ventral body wall, extrinsic back, and ALL limbs
what does the dorsal rami innervate?
intrinsic skin and deep back muscles
myotomes
the muscles supplied by individual spinal nerve
neural crest cells differentiate to form the….
PERIPHERAL nervous system
the neural tube forms the…
CENTRAL nervous system
what connects the peripheral nervous system to central nervous system?
SPINAL nerves :)
how does C8 nerve fit in the spinal cord?
it goes in between C7 and T1
what movements do c6,c7,c8 do @ glenohumeral joint?
M - medial rotation
A - a
D - d
D - duction
E - extension
what movements does the c5 nerve do?
- lateral rotation
- flexion
- abduction
what nerve moves the elbow joint into flexion?
c6
what nerve moves the elbow joint into extension?
c7
what nerve moves wrist joint into flexion?
c7
what nerve moves the wrist joint into extension?
c6
what nerve works the digital flexion and pronation?
c8
what nerve works digital extension?
c7
what nerves do the individual finger movements?
T1
what are dermatomes?
an area of the skin supplied by an individual nerve
