Appendicular Flashcards
distal tendons blend with fibrous capsule of shoulder joint on way to insertion pt on humerus; stabilize shoulder joint
musculotendinous cuff (rotator cuff)
muscles of rotator cuff?
subscapularis, supraspinatous, infraspinatous, teres minor
When doing bicep curls, if you use a narrow grip you are mostly using the ___ head of the ___ brachii. If you use a wide grip you are using the ___ head of the ____ brachii
long head, biceps, short head, biceps
___ can be palpated on medial side of arm
brachialis
what does most work: biceps brachii or brachialis
brachialis
what nerve is between medial head and long head of triceps brachii, on posterior/medial portion of arm
ulnar nerve
nerve deep to biceps brachii (both heads) and brachialis, medial
median nerve
nerve deep to biceps brachii (both heads) and brachialis, more lateral
musculocutaneous nerve
muscles in anterior compartment of forearm?
flexors
muscles in posterior compartment of forearm?
extensors
forearm muscles originate on ___ and insert on ___
medial epicondyle of humerus, carpals/metacarpals/phalanges
most variable muscle in body?
palmaris longus
where fascia of forearm thickens to form a wide band of CT; act like bracelets hold down tendons
retinacula
inflammation of ____ and tendons can irritate the median nerve and cause carpal tunnel syndrome
flexor retinaculum
retinaculum on posterior forearm?
extensor retinaculum
retinaculum on anterior forearm?
flexor retinaculum
fattened area at base of thumb; abductor pollicis brevis, opponens pollicis, flexor pollicis brevins, and adductor pollicis; abduction, adduction, flexion, and opposition
thenar muscles
3 groups of intrinsic muscles of the hand
thenar, hypothenar, and intermediate
rounded contour of palm of hand that is also called ball of thumb
thenar eminence
ball of little finger; abductor digiti minimi, flexor digiti minimi brevis, and opponens digiti minimi; flexion, abduction, opposition
hypothenar muscles
rounded contour on the palm of the hand; the ball of the little finger
hypothenar eminence
3 types of intermediate muscles
lumbricals, palmar interosseous, dorsal interosseous
O/I on tendons of other muscles; flexing each finger at the metacarpophalangeal joints and extend each finger at interphalangeal joints
lumbricals
lumbricals innervated by?
median and ulnar nerves
between metacarpals on anterior side; delicate movements (piano playing/typing)
palmar interosseous
between metacarpals on posterior side; delicate movements
dorsal interosseous
between metacarpals and are involved in abduction, adduction, flexion and extension of fingers
dorsal interossei (DAB) and palmar interossei (ADPI)
what are dorsal interossei and palmar interossei innervated by?
ulnar nerve
first, second, third, fourth lumbricals originate and insert on tendons of…
flexor digitorum profundus
most of dexterity of the hand depends on…
movement of the thumb
movements of the other thumb are defined differently compare to movement of other digits because the thumb is…
positioned at a right angle to other digits
What muscles are in the anterior compartment of the arm?
Biceps brachii, brachialis, and coracobracialis
What muscles are in the posterior compartment off the arm?
triceps brachii
Muscles in the anterior compartment of forearm?
flexors
Muscles in posterior compartment of forearm?
extensors
Muscles in lateral compartment of forearm?
brachioradialis
