muscles of the human body Flashcards
pectoralis major
large chest muscle responsible for arm flexion & adduction
pectoralis minor
small chest muscle located beneath the pectoralis major
subclavius
muscle located beneath the clavicle responsible for depressing the clavicle
latissimus dorsi
large back muscle responsible for arm extension & adduction
serratus anterior
muscle located on the lateral surface of the rib cage, responsible for scapular protraction & rotation
trapezius
large muscle that covers the upper back & neck, responsible for scapular elevation, retraction, & rotation
levator scapulae (deep)
muscle located deep in the neck responsible for scapular elevation
rhomboid major (deep)
deep muscle located between the scapula & spine, responsible for scapular retraction
rhomboid minor (deep)
deep muscle located between the scapula & spine, responsible for scapular retraction
thoracolumbar fascia
connective tissue that covers the lower back, providing support & attachment for muscles
deltoid anterior head
front portion of the deltoid muscle responsible for arm flexion & medial rotation
deltoid middle head
middle portion of the deltoid muscle responsible for arm abduction
deltoid posterior head
back portion of the deltoid muscle responsible for arm extension and lateral rotation
teres major
muscle located on the back of the shoulder, responsible for arm adduction and medial rotation
teres minor
small muscle located on the back of the shoulder, responsible for arm lateral rotation
supraspinatus
muscle located on the top of the shoulder blade, responsible for arm abduction
infraspinatus
muscle located on the back of the shoulder blade, responsible for arm lateral rotation
subscapularis
muscle located on the front of the shoulder blade, responsible for arm medial rotation
rectus abdominis
muscle located in the front of the abdomen, responsible for trunk flexion
external oblique
muscle located on the sides of the abdomen, responsible for trunk rotation and lateral flexion
tendinous inscriptions
fibrous bands that divide the rectus abdominis muscle into segments
erector spinae (deep)
group of muscles located along the spine, responsible for spinal extension and lateral flexion
gluteus medius
muscle located on the side of the hip, responsible for hip abduction and stabilization
gluteus maximus
large muscle located in the buttocks, responsible for hip extension
gluteus minimus
muscle located on the side of the hip, responsible for hip abduction and stabilization
biceps brachii short & long head
muscle located in the front of the upper arm, responsible for elbow flexion and forearm supination
brachialis
muscle located beneath the biceps brachii, responsible for elbow flexion
triceps brachii short & long head
muscle located in the back of the upper arm, responsible for elbow extension
tricep medial head
middle portion of the triceps brachii muscle
triceps brachii lateral head
outer portion of the triceps brachii muscle
pronator teres
muscle located in the forearm, responsible for forearm pronation
flexor carpi ulnaris
muscle located on the inner side of the forearm, responsible for wrist flexion and ulnar deviation
palmaris longus
muscle located on the inner side of the forearm, responsible for wrist flexion