Portions of the back that are particularly difficult to me for some reason

Question 1

What is S2 dermatome

Answer 1

posterior medial lower limb

Question 2

what is S1 dermatome

Answer 2

posterior lateral lower limb

Question 3

What test would you do for a supraspinatus tear

Answer 3

Abduct arm to 90 degree angle and have patient attempt to slowly lower arm against resistance. if they cannot sustain arm angle or lower it slowly against resistance it is a supraspinatus tear.

Question 4

How would one test for a infraspinatus tear

Answer 4

have them attempt to scratch their back from above, if unable infraspinatus is likely torn

external rotation/apley test.

Question 5

how would one test for subscapularis tear

Answer 5

have them scratch back form below , if unable subscapularis is likely torn

(internal rotation/apley test)

Question 6

What is the function of the serratus anterior

Answer 6

protract and rotate scapula

Question 7

Is the long head of the biceps brachii medial or lateral

Answer 7

lateral

Question 8

what do the middle fibers of the deltoid attach to

Answer 8

acromion of scapula

Question 9

what do the posterior fibers of the deltoids attach to

Answer 9

spine of the scapula

Question 10

Major functions of pectoralis major

Answer 10

adduct and flex the arm

Question 11

What is the insertion point of the biceps brachaii

Answer 11

radial head of the ulna at bicep tendon
and
aponeurosis into forearm fascia

Question 12

What is the name of the muscle that stabilizes the elbow

Answer 12

aconeus

Question 13

What is the function of the aconeus

Answer 13

extend forearm and stabilize elbow

Question 14

What is the function of the extensor carpi radialis longus and brevis

Answer 14

extension and radial deviation at the wrist

Question 15

What actually are roots of the brachial plexus

Answer 15

anterior rami

Question 16

What is musculotaneous nerve innervation

Answer 16

muscles: biceps, brachialis, coracobrachialis
sensory: anterior forearm

Question 17

musculotanous nerve damage =

Answer 17

loss of flexion of forearm and loss of sensory in lateral forarm.

Question 18

axillary nerve innervates

Answer 18

motor: deltoid and teres minor
sensory: shoulder skin sensation (C5)

Question 19

axillary nerve damage =

Answer 19

slight flexion and extension problems. not completely wiped out because other muscles also crete this motion. compare to other extremities.

Question 20

What are the innervations of the radial nerve

Answer 20

sensory to posterior forearm and posterior hand (1st three digits)
muscles = all posterior arm muscles (all extensors)

Question 21

What are the two divisions of radial nerve and what are they responsible for
superficial radial nerve =
deep radial nerve =

Answer 21

superficial = sensory
deep = motor

Question 22

What happens with proximal radial nerve damage

Answer 22

weakness in forearm extension and other extensors along with altered sensation to posterior arm, forearm, and hand

Question 23

what happens with distal radial nerve damage

Answer 23

inability to extend fingers and wrist. as well as sensation over forearm and hand NOT UPPER ARM

Question 24

What is the largest contributor to innervating the anterior forearm

Answer 24

median nerve

Question 25

what is the largest contributor to innervating the anterior hand

Answer 25

ulnar nerve