Appendicular Muscles Lecture Notes

Flashcards based on lecture notes about appendicular muscles.

Name a function of the axial muscles.

Support & move head & spinal cord, Function in nonverbal communication (affect facial features), Move lower jaw during chewing, Assist in food processing & swallowing, Aid breathing, Support & protect abdominal & pelvic region.

Name a muscle associated w/ chewing that we went over.

Temporalis, masseter, lateral & medial pterygoids, buccinator.

What is the common insertion of all the tongue muscles we focused on?

Inferior aspect of the tongue in some regard.

What is the common origin structure that the erector spinae muscles attach to?

Spinous processes.

Which of the following is not a muscle involved w/ respiration? Internal intercostals, Diaphragm, __, External intercostals, Transversus thoracis

Transversospinalis

Which of the following is not a muscle of the abdominal wall or the pelvic floor? Rectus abdominis, Coccygeus, External obliques, Pubococcygeus, __.

All the above are muscles of the abdominal wall or the pelvic floor.

Appendicular muscles

Muscles that move pectoral girdle, Glenohumeral joint/arm, Elbow joint/forearm, Wrist joint, hand, & fingers, Hip joint/thigh, Knee joint/leg, Leg & foot.

Function of muscles that originate on axial skeleton & insert on clavicle & scapula.

Stabilize & move scapula; Help increase arm's angle of movements; Elevation, depression, protraction, or retraction.

Pectoralis minor Origin:. Insertion:. Function:__

anterior surface of ribs; coracoid process of scapula; draws scapula forward & downward.

Serratus anterior Origin:. Insertion:. Function:__

ribs 1-8 (anterior & superior margins); entire anterior surface of vertebral border of scapula; rotates scapula so that its inferior angle moves laterally & upward; pushing & punching, “boxers muscle.”

Trapezius Origin:. Insertion:. Function:__

occipital bone, spines of C7 & all thoracic vertebrae; continuous insertion along acromion & spine of scapula & lateral 3rd of clavicle; stabilizes, raises, retracts, & rotates scapula.

Latissimus dorsi Origin:. Insertion:. Function:__

ribs (8-12), thoracic vertebrae (T7- T12); humerus (intertubercular groove); prime mover of arm extension; adduction & medial rotation at shoulder; “Swimmer’s muscle”

Pectoralis major Origin:. Insertion:. Function:__

sternal end of clavicle, sternum & rib cartilage; greater tubercle of humerus; prime mover of arm flexion, rotates arm medially, adducts arm (climbing, throwing, pushing).

Deltoid Origin:. Insertion:. Function:__

trapezius, clavicle, scapula; humerus (deltoid tuberosity); prime mover of arm abduction when all its fibers contract simultaneously.

Biceps brachii Origin:. Insertion:. Function:__

coracoid process & supraglenoid tubercle of scapula; radial tuberosity & bicipital aponeurosis; flexes elbow joint & supinates forearm.

Brachialis Origin:. Insertion:. Function:__

front of distal humerus; coronoid process of ulna; major forearm flexor.

Brachioradialis Origin:. Insertion:. Function:__

supracondylar ridge on humerus; base of styloid process on radius; synergist in forearm flexion.

Triceps brachii Origin:. Insertion:. Function:__

long head, infraglenoid tubercle of scapula; lateral & medial head, posterior of humerus (above & below radial groove respectively); olecranon of ulna; primary extensor of forearm.

Tensor fasciae latae Origin:. Insertion:. Function:__

Iliac crest & spine (lateral surface of anterior superior iliac spine); Iliotibial band/tract; flexes & medially rotates thigh.

Gluteus maximus Origin:. Insertion:. Function:__

iliac crest, sacrum & coccyx; gluteal tuberosity on femur; major extensor of thigh; complex & powerful, climbing stairs & running; inactive during standing & walking.

Gluteus medius Origin:. Insertion:. Function:__

ilium; anterior border of greater trochanter on femur; abducts & medially rotates thigh; steadies pelvis; extremely important in walking – keeps pelvis up so foot in air does not drag.