Appendicular Musculature Flashcards
Muscles that stabilize the pectoral girdle
Subclavius, deltoids, pectoralis major, pectoralis minor, serratus anterior
Deltoid, trapezius, rhomboid minor or major
Lateral rotation of scapula
Trapezius superior and serratus anterior
Medial rotation of scapula
Levator scapulae
Rhomboid major and minor
Elevation of the scapulae
Levator scapulae
Trapezius superior
Rhomboid major and minor
Depression of the scapulae
Trapezius inferior
serratus anterior
Retraction
Rhomboid minor and major
Trapezius
Protraction of the scapulae
Pectoralis minor and serratus anterior
Rotator Cuff Muscles
Supraspinatus elevates the shoulder joint to the side
Infraspinatus externally rotates the shoulder joint
Teres minor externally rotates the shoulder joint
Subscapularis allows humerus to move freely during elevation of the arm
Each have tendons
Muscles acting on the arm
Pectoralis major flexes, adducts and medially rotates humerus
Deltoid can flex and medially rotate, abduct, or extend and laterally the arm depending on which fibers are active
Muscles acting on the Arm
Teres major extends and medially rotates humerus
Latissimus dorsi adducts and medially rotates humerus, extends shoulder joing
Muscles acting on the forearm
Brachialis is the prime mover for elbow flexion
Biceps brachii supinates forearm and flexes both elbow and shoulder
Brochioradialis flexes the elbow
Triceps brachii extends the elbow
Action of rotator muscles on the forearm
Supination
Supinator and biceps brachii supinate forearm
Action of rotator muscles of the forearm
Pronator teres and pronator quadrutus pronate( warps around ulna and radius) forearm
Posterior compartment of the muscles
Extends the wrist (carpus), fingers (digits), and thumb (pollex)
Anterior compartment muscles
flex the wrist (carpus), fingers (digits), and thumb (pollex)
Intrinsic muscles of the hand
Abductor pollicis brevis is part of the thenar group at the base of the thumb.
Abductor digiti minimi part of the hypothenar group at the base of the little finger
Muscles of the thumb pollex
Flexor pollicis brevis
Abductor pollicis brevis
Opponens policis
The three middle fingers
First dorsal interosseous, abductor pollicis and lumbricals
Muscles of the small finger minimi
Opponens digiti minimi
Flexor digiti minimi
Abductor digiti minimi
Instrinsic muscles of the hand
Palmar interosseous, opponens digiti minimi, opponens policis
Instrinsic muscles of the hand, dorsal aspect
Abductor pollicis brevis, dorsal interosseous, abductor digiti minimi
Muscles that act on the hip and femur
Iliopsoas consist of the iliacus and the psoas major that flex the thigh
Medial compartment of the thigh contains
Adductors move it medially
Posterior gluteal and thigh muscles
Gluteus maximus extends and abducts the thigh
Gluteus medius and gluteus minimus abduct and medially rotate the thigh
What extends the knee and has for muscles in the anterior compartment
Rectus femoris, vastus lateralis, vastus medialis, vastus intermedius
What flexs the knee
Hamstring muscles flex the knee and are posteriors with posterior compartment
Biceps femoris, semitendinosus, semimembranous
Muscles of the leg, anterior compartment
Anterior compartment muscles dorsiflex the foot and extend the toes (hallux and digits)
Superficial muscles of the leg, posterior compartment
posterior muscles plantar flex the foot and flex the toes
Deep muscles of the leg, posterior and lateral compartments
Flexor digitorum longus and flexor hallucis longus and tibialis posterior
Instrinsic muscles of the foot
Provide arch support and aid in locomotion
Ventral inferior muscles help flex the toes
