More Muscles Flashcards
Posterior of forearm- superficial
Brachioradialis
Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor digitorum
Extensor digiti minimi
Extensor carpi ulnaris
Action: extend wrist and fingers
Innervation: radial nerve
Posterior of forearm- deep
Supinator
Extensor indicis
Abductor pollicis longus
Extensor pollicis brevis
Extensor pollicis longus
Action: extend wrist and fingers
Innervation: radial nerve
Abductor Pollicis longus
Extensor pollicis brevis
Extensor pollicis longus
Radial artery innervates and FOOSH injury results in scaphoid fracture tenderness
Anatomical snuffbox
Repetitive use of superficial extensor muscles of forearm
Pain over lateral epicondyle where superficial wrist extensors originate from
Lateral epicondylitis
Anterior compartment of forearm- superficial
Pronator Teres
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris
Origin: medial epicondyle of humerus
Insertion: mid shaft of radius
Action: pronates forearm
Innervation: median nerve
Pronator teres
Origin: medial epicondyle of humerus
Insertion: base of 2nd metacarpal
Action: flexes wrist, abducts wrist
Innervation: median nerve
Flexor carpi radialis
Origin: medial epicondyle of humerus
Insertion: palmar aponeurosis
Action: weak flexor of wrist
Innervation: median nerve
Palmaris longus
Origin: medial epicondyle of humerus
Insertion:pisiform hook of hamate
Action: flexes wrist, Adducts wrist
Innervation: ulnar nerve
Flexor carpi ulnaris
Anterior compartment of forearm- intermediate
Origin: medial epicondyle of humerus
Insertion: middle phalanges of 2-5
Action: flexes wrist, flexes middle phalanges 2-5
Innervation: median nerve
Flexor digitorum superficialis
Anterior compartment of forearm- deep
Flexor digitorum profundus
Flexor pollicis longus
Pronator quadratus
Origin: proximal ulna
Insertion: distal phalanges 2-5
Action: flexes wrist, flexes middle phalanges 2-5 & joints
Innervation: median nerve (lateral 1/2), ulnar nerve (medial 1/2)
Flexor digitorum profundus
Origin: distal radius
Insertion: distal phalanx thumb
Action: flexes thumb
Innervation: median nerve
Flexor pollicis longus
Origin: distal ulna
Insertion: distal radius
Action: pronates forearm
Innervation: median nerve
Pronator quadratus
Anterior compartment of thigh
Quads- rectus femoris, vastus lateralis, vastus medialis, vastus intermedius
Action: extend leg
Innervation: femoral nerve
Medial compartment of thigh
Adductor longus
Adductor brevis
Adductor magnus
Gracialis
Pectineus
Action: adduct thigh
Innervation: obturator nerve
Anterior compartment of leg
Tibialis anterior
Extensor digitorum longus
Extensor hallicis longus
Fibularis tertius
Action: dorsiflexes foot, extend toes
Innervation: deep fibular nerve
Posterior compartment of leg
Superficial- gastrocnemius, soleus, plantaris
Deep- popliteus, tibialis posterior, flexor digitorum longus, flexor hallucis longus
Action: planter flexes foot, inverts foot, flexes toes
Innervation: tibial nerve
Lateral compartment of leg
Fibularis longus
Fibularis brevis
Action: plantar flexes foot, everts foot
Innervation: superficial fibular nerve
Increased pressure within a muscle compartment leading to insufficient blood supply tissue ischemia (muscle dies)
Acute- traumatic injury
Chronic- repetitive muscle use anterior of leg
Pain
Parenthesia
Pallor
Pulselessness swelling
Paralysis
Compartment syndrome
Muscle fibers pull in different directions, origin of muscle is broad, fascicles convert toward tendon of insertion
Convergent pattern
Many fascicles attached side by side inserting into one tendon
Mulitpennate
Fascicles insert into tendon form both sides
Bipennate
Fascicles insert into one side of tendon
Unipennate
