Dermatomes, Myotomes, and Reflexes Flashcards
(78 cards)
Nerve roots of biceps reflex?
C5/C6
Nerve roots of triceps reflex?
C6/C7
Nerve roots of supinator reflex?
C5/C6
Nerve roots of brachioradialis reflex?
C5/C6
Nerve roots of patellar reflex?
L3/L4
Nerve roots of ankle reflex?
S1
Where is the C4 dermatome?
Over the acromioclavicular joint.
Where is the C5 dermatome?
Lateral aspect of lower edge of deltoid muscle - ‘regimental badge’.
Where is the C6 dermatome?
Palmar side of the thumb (and lateral forearm).
Where is the C7 dermatome?
Palmar side of middle finger.
Where is the C8 dermatome?
Palmar side of the little finger.
Where is the T1 dermatome?
Medial aspect of the antecubital fossa, proximal to the medial epicondyle of the humerus.
Where is the L1 dermatome?
Inguinal region and the very top of the medial thigh.
Where is the L2 dermatome?
Middle and lateral aspect of the anterior thigh.
Where is the L3 dermatome?
Medial epicondyle of the femur.
Where is the L4 dermatome?
Medial malleolus (and medial aspect of calf).
Where is the L5 dermatome?
Dorsum of the foot at the third metatarsophalangeal joint.
Where is the S1 dermatome?
Lateral aspect of the calcaneus (heel).
Where is the S2 dermatome?
Midpoint of the popliteal fossa (and some of the buttock).
Where is the S3 dermatome?
Horizontal gluteal crease.
Where is the S4 dermatome?
Perianal area.
Where is the S5 dermatome?
Perianal area.
Main muscles responsible for shoulder flexion?
- deltoid
- pectoralis major
Innervation of deltoid?
Axillary nerve - C5 and C6.
