KINS 1223 Lab Exam 2

trapezius (upper fibers)

origin: occipital bone

insertion: scapula

action: elevation

trapezius (middle fibers)

origin: thoracic vertebrae

insertion: scapula

action: retraction

trapezius (lower fibers)

origin: thoracic vertebrae

insertion: scapula

action: depression

levator scapulae

origin: C1 to C4

insertion: medial border of scapula

action: elevation

rhomboid minor

origin: C7 to T1

insertion: medial border of scapula

action: scapular retraction

rhomboid major

origin: T2 to T5

insertion: medial border of scapula

action: scapular retraction

serratus anterior

origin: ribs

insertion: medial border of the scapula (anterior side)

action: protraction

pectolaris minor

origin: ribs 3-5

insertion: coracoid process

action: scapular protraction and scapular depression

deltoid (anterior fibers)

origin: clavicle

insertion: deltoid tuberosity

action: shoulder flexion

deltoid (middle fibers)

origin: acromion process of scapula

insertion: deltoid tuberosity

action: shoulder abduction

deltoid (posterior fibers)

origin: spine of scapula

insertion: deltoid tuberosity

action: shoulder extension

pectoralis major

origin: clavicle, sternum, ribs

insertion: intertubercular groove/sulcus of humerus

action: flexion, internal rotation, adduction

latissimus dorsi

origin: lower spine, iliac crest

insertion: intertubercular groove/sulcus of humerus

action: shoulder extension, adduction, internal rotation

teres major

origin: inferior angle of scapula

insertion: lesser tubercle of humerus

action: extension, international rotation, adduction

supraspinatus (post.)

origin: supraspinous fossa of scapula

insertion: greater tubercle of humerus

action: shoulder abduction

infraspinatus (post.)

origin: infraspinous fossa of scapula

insertion: greater tubercle of humerus

action: shoulder external rotation

teres minor (post.)

origin: lateral border of scapula

insertion: greater tubercle

action: external rotation

subscapularis (anterior)

origin: subscapular fossa of scapula

insertion: lesser tubercle

action: internal rotation

biceps brachii (long head)

origin: superior glenoid cavity

insertion: radial tuberosity

primary action: elbow flexion

biceps brachii (short head)

origin: coracoid process

insertion: radial tuberosity

primary action: elbow flexion

triceps brachii (long head)

origin: inferior glenoid cavity

insertion: olecranon process of ulna

primary action: elbow extension

triceps brachii (lateral head)

origin: proximal humerus

insertion: olecranon process of ulna

primary action: elbow extension

triceps brachii (medial head)

origin: shaft of humerus

insertion: olecranon process of ulna

primary action: elbow extension

coracobrachialis

origin: coracoid process of clavicle

insertion: shaft of humerus (medial)

primary action: shoulder flexion

brachilias (deep to biceps)

origin: shaft of humerus (anterior)

insertion: coronoid process of the ulna

primary action: elbow flexion

brachioradialis

origin: lateral epicondyle of humerus

insertion: styloid process of the radius

primary action: elbow flexion

pronator teres

common origin: medial epicondyle

insertion: radius

action: pronation

flexor carpi ulnaris

common origin: medial epicondyle

insertion: ulna *think pinky side*

action: flexion, ulnar deviation

palmaris longus

origin: medial epicondyle

insertion: *think palm*

action: wrist flexion

flexor carpi radialis

origin: medial epicondyle

insertion: *think thumb side*

action: flexion, radial deviation

flexor digitorum superficialis

origin: medial epicondyle

insertion: *think digits*

action: flexion on digits

supinator

common origin: lateral epicondyle

insertion: radius

action: forearm supination

extensor carpi ulnaris

origin: lateral epicondyle

insertion: *think pinky side*

action: extension, ulnar deviation

extensor carpi radialis longus

origin: lateral epicondyle

insertion: *think palm*

action: wrist extension, radial deviation

extensor carpi radialis brevis

origin: lateral epicondyle

insertion: *think thumb side*

action: .... extension, radial deviation

extensor digitorum

origin: lateral epicondyle

insertion: *think digits*

action: extension of digits

iliopsoas

origin: vertebral column and iliac fossa

insertion: lesser trochanter of femur

action: hip flexion

sartorius

origin: anterior superior iliac spine (ASIS)

insertion: tibia

action: hip flexion, knee flexion, external hip rotation

quadriceps femoris (rectus femoris)

origin: anterior inferior iliac spine (AIIS)

insertion: tibial tuberosity via patella ligament

action: hip flexion, knee flexion

quadriceps femoris (vastus lateralis)

origin: greater trochanter of the femur

insertion: tibial tuberosity via patella ligament

action: knee extension

quadriceps femoris (vastus intermedius)

origin: shaft of femur (anterior)

insertion: tibial tuberosity via patella ligament

action: knee extension

quadriceps femoris (vastus medialis)

origin: shaft of femur (medial)

insertion: tibial tuberosity via patella ligament

action: knee extension

adductors (adductor brevis)

origin: pubis

insertion: linea aspera

action: hip adduction

adductors (adductor longus)

origin: pubis

insertion: linea aspera

action: hip adduction

adductors (adductor magnus)

origin: pubis

insertion: linea aspera

action: hip adduction

gracilis (most medial)

origin: pubis

insertion: tibia

action: hip adduction, knee flexion

gluteal muscles (gluteus maximus)

origin: iliac crest and ilium

insertion: gluteal tuberosity

action: hip extension and external rotation

gluteal muscles (gluteus medius)

origin: illium

insertion: greater trochanter

action: hip abduction, hip internal and external rotation

gluteal muscles (gluteus minimums)

origin: ilium

insertion: greater trochanter

action: hip abduction, hip internal and external rotation

tensor fascia latte (lateral)

origin: iliac crest

insertion: iliotibial band

action: hip abduction, internal rotation

hamstrings (biceps femoris long head)

origin: ischial tuberosity

insertion: fibular head

action: hip extension, knee flexion

hamstrings (biceps femoris short head)

origin: linea aspera

insertion: fibular head

action: hip extension, knee flexion

hamstrings (semimembranosous)

origin: ischial tuberosity

insertion: near medial condyle of the tibia

action: hip extension, knee flexion

hamstrings (semitendinous)

origin: ischial tuberosity

insertion: near medial condyle of the tibia

action: hip extension, knee flexion

gastrocnemius

origin: near femoral condyles

insertion: calcanea tendon

action: plantar flexion

soleus

origin: posterior tibia and fibula

insertion: calcanea tendon

action: plantarflexion

deep plantar flexors (tibialis posterior)

origin: posterior tibia

insertion: plantar surface of foot

action: plantar flexion, inversion

deep plantar flexors (flexor digitorum longus)

origin: near lateral condyle of tibia

insertion: plantar surface of digits 2-5 (no thumb toe)

action: flexion of digits

deep plantar flexors (flexor hallucinate longus)

origin: fibula

insertion: plantar surface of first digit

action: flexion of hallux

tibialis anterior (next to tibia)

origin: near lateral condyle of tibia

insertion: dorsal surface of the foot

action: dorsiflexion, inversion

extensor digitorum longus

origin: near lateral condyle of tibia

insertion: dorsal surface of digits 2-5 (no big toe)

action: extension of digits 2-5

extensor hallucis longus

origin: fibula

insertion: dorsal surface of the first digit

action: extension of hallux

fibularis longus

origin: fibula

insertion: plantar surface of foot

action: plantar flexion, eversion

fibularis brevis

origin: fibula

insertion: plantar surface of foot

action: plantar flexion, eversion

sternocleifomastoid

origin: sternum and clavicle

insertion: mastoid process

action: neck flexion and neck rotation

erector spinae: iliocostalis, longissimus, spinalis

origin: vertebrae and ribs

insertion: vertebrae and ribs

action: trunk/neck extension

abdominal muscles from superficial to deep:

external abdominal oblique

internal abdominal oblique

transverse abdominis

rectus abdominis

common action: trunk flexion and rotation