A&P I Lab Exam 3b - anterior and medial muscles

what are the five nomenclatures for naming muscles?

location, size, function, depth, number of bodies

if a muscle is crossing a joint on the anterior side, it produces…?

flexion

if a muscle is crossing a joint on the posterior side, it produces…?

extension

if a muscle is crossing a joint on the lateral side, it produces…?

abduction

if a muscle is crossing a joint on the medial side, it produces…?

adduction

what is the origin and insertion of the sternohyoid?

sternum and clavicle → hyoid

what does the sternohyoid do?

depress hyoid (swallow and speech)

what is the origin and insertion of the sternocleidomastoid?

sternum, clavicle → mastoid process (temporal)

what does the sternocleidomastoid do?

flex neck, rotate head to opposite side

what is the origin and insertion of the pectoralis major?

clavicle, sternum, cartilage of ribs 1-6 → intertubecular sulcus of humerus

what does the pectoralis major do?

adduct and medially rotate arm

what is the origin and insertion of the pectoralis minor?

ribs 3-5 → coracoid process of scapula

what does the pectoralis minor do?

pull scapula forward and down

what is the origin and insertion of rectus abdominis?

pubic crest and symphysis → xiphoid process and ribs 5-7

what does the rectus abdominis do?

flex vertebral column

what is the origin and insertion of the external abdominal oblique?

outer lower ribs → iliac crest

what does the external abdominal obliques do?

compress abdomen, flex vertebral column, rotate trunk

what is the origin and insertion of the internal abdominal oblique?

lumbar fascia, iliac crest, inguinal ligament → ribs 10-12

what does the internal abdominal obliques do?

compress abdomen, aid in trunk rotation

what is the origin and insertion of the biceps brachii?

coracoid process and supraglenoid tubercle → radial tuberosity

what does the biceps brachii do?

flex elbow and supinate

what is the origin and insertion of the brachialis?

frontal distal humerus → ulna coranoid process

what does the brachialis do?

major flexor

what is the origin and insertion of the coracobrachialis?

coracoid process → medial shaft of humerus

what does the coracobrachialis do?

flex and adduct

what is the origin and insertion of the flexor carpi radialis?

medial epicondyle humerus → metacarpals 2 & 3

what does the flexor carpi radialis do?

flex and abduct wrist

what is the origin and insertion of flexor carpi ulnaris?

medial epicondyle of humerus and olecrannon of ulna → pisiform, hamate, and metacarpal 5

what does the flexor carpi ulnaris do?

flex and adduct wrist

what is the origin and insertion of the palmaris longus?

medial epicondyle humerus → palmar aponeurosis

what does the palmaris longus do?

flex wrist and tighten skin of palm

what is the origin and insertion of the satorius?

anterior superior iliac spine (ASIS) → medial surface of proximal tibia

what does the satorius do?

flex, abduct, laterally rotate thigh, and flex leg

what is the origin and insertion of the rectus femoris?

anterior inferior iliac spine (AIIS) → patella and tibial tuberosity

what does the rectus femoris do?

extend leg and flex hip

what is the origin and insertion of the vastus medialis?

linea aspera and intertrochanteric line of femur → patella/tibial tuberosity

what does the vastus medialis do?

extend leg

what is the origin and insertion of the vastus lateralis?

greater trochanter and linea aspera → patella/tibial tuberosity

what does the vastus lateralis do?

extend leg

what is the origin and insertion of the adductor longus?

pubic body → linea aspera

what does the adductor longus do?

adduct, flex, and medially rotate thigh

what is the origin and insertion of the gracilis?

inferior ramus and pubic body → medial tibia

what does the gracilis do?

adduct thigh, flex and medially rotate leg

what is the origin and insertion of the tibialis anterior?

lateral condyle and upper shaft of tibia → medial cuniform and metatarsal 1

what does the tibialis anterior do?

dorsiflex and invert foot

sternohyoid

sternocleidomastoid

pectoralis major

pectoralis minor

rectus abdominis

external abdominal obliques

internal abdominal obliques

biceps brachii

brachialis

coracobrachialis

flexor carpi radialis

flexor carpi ulnaris

palmaris longus

satorius

rectus femoris

vastus medialis

vastus lateralis

adductor longus

gracilis

tibialis anterior