The Upper Extremities Flashcards
When looking at the forearm which bone (radius/ulna) is medial and which is lateral
the radius is lateral
the ulna is medial
(assuming anatomical position
What type of joint is the thumb joint of the metacarpal bone of the thumb with the carpus ?
saddle joint
What type of joints are the metacarpophalangeal joints ?
condylar joints or ellipsoid joints
what type of joints are the interphangeal joints ?
hinge joints
What are the muscles that make up the rotator cuff ?
subscapularis, infraspinatus, supraspinatus and the teres minor muscles
What is the thenar eminence ?
a soft tissue mount over the palmar aspect of metacarpal 1 and allow the thumb to freely move relative to the other fingers
What forms the axillary inlet
lateral margin of rib 1
posterior surface of clavicle
superior margin of the scapula
medial surface of the coracoid process of the scapula
the brachial plexus is formed by what nerves ?
anterior rami of cervical spine c5c8 and T1
If a doctor wanted to examine a patients lower cervical and T 1 nerves how would they do this ?
they would examine the dermatomes, myotomes, and tendon reflexes in the upper limb (clinical signs of these nerves usually exhibit in the upper limb brachial plexus)`
IF you are looking to test the C5 dermatome what test are you going to do?
test the upper lateral region of the arm
Where do you test for the C6 dermatome
palmar pad of the thumb
Where do you test for the C7 dermatome
pad of the index finger
Where do you test for C8 dermatome
pad of little finger
how do you test for the T1 dermatome
skin on the medial aspect of the elbow
how do you test for the mytome at C5
abduction of the arm at the glenohumeral joint
how do you test for the myotome at c6
fletion of the forearm at the elbow joint
how do you test for the myotome at c7
extension of the forearm at the elbow joint
how do you test for the myotome at c8
flexion of the fingers
how do you test for the myotome at t1
abduction and adduction of the index, middle, and ring fingers
if a patient is unconcious how do you test for the c6 somatic sensory and motor functions
tap on the cubital fossa
if a patient is unconcious how do you test for the somatic sensory and motor functions of c7
tap on the tendon of the triceps posterior to the elbow
What spinal cord level is associated with the diaphragm?
C4
all of the muscles in the anterior compartment of the arm are innervated by what nerve
musculocutaneous nerve
the musculocutaneous nerve innervates what region of the skin
anterolateral side of the forearm