BIOL 319 - Lab 9: Deep Thorax & Deep Dorsal & Ventral Upper Limb AOIs

Iliocostalis Action

lateral flexion of vertebral column; extension of vertebral column; depression of ribs

Iliocostalis Origin

iliac crest; ribs

Iliocostalis Insertion

ribs; transverse process of cervical vertebrae

Semispinalis capitis Action

rotation of head to opposite side; extension of head and neck

Semispinalis capitis Origin

transverse processes of C7-T6 vertebrae

Semispialis capris Insertion

occipital bone

External intercostals Action

elevation of ribs during inhalation

External intercostals Origin

inferior border of rib above

External intercostals Insertion

superior border of rib below

Internal intercostals Action

depression of ribs during forced exhalation

Internal intercostals Origin

superior border of rib below

Internal intercostals Insertion

inferior border of rib above

diaphragm action

contraction flattens during inspiration

diaphragm origin

ribs 5-10 and their costal cartilages; arcuate ligaments and L1-3 vertebral bodies

diaphragm insertion

central tendon

rectus abdominus action

flexion of trunk; compression of anterior abdominal wall

rectus abdominus origin

pubic crest and symphysis pubis

rectus abdominus insertion

xiphoid process and costal cartilages of ribs 5-7

coccygeus action

supports pelvic viscera

coccygeus origin

spine of ischium

coccygeus insertion

sacrum and coccyx

ischiocavernosus action

compress erectile tissue of crus of penis/clitosis to help establish and maintain erection

ischiocavernosus origin

ischium

ischiocavernosus insertion

crus of penis or clitoris

external urethral sphincter action

compresses urethra

external urethral sphincter origin

transverse perineal ligament; perineal pouch

external urethral sphincter insertion

perineal body

subscapularis action

medial rotation of arm; holds head of humerus in glenoid cavity

subscapularis origin

subscapular fossa of scapula

subscapularis insertion

lesser tubercle of humerus

supraspinatus action

abduction of arm; holds head of humerus in glenoid cavity

supraspinatus origin

supraspinous fossa of scapula

supraspinatus insertion

greater tubercle of humerus

infraspinatus action

lateral rotation of arm; holds head of humerus in glenoid cavity

infraspinatus origin

infraspinous fossa of scapula

infraspinatus insertion

greater tubercle of humerus

terms major action

(MADE) medial rotation, adduction, and extension of arm

teres major origin

inferior angle and lateral border of scapula

teres major insertion

intertubercular sulcus of humerus

teres minor action

lateral rotation and adduction of arm; holds head of humerus in glenoid cavity

teres minor origin

lateral border of scapula

teres minor insertion

greater tubercle of humerus

coracobrachialis action

flexion and adduction of arm

coracobrachialis origin

coracoid process of scapula

coracobrachialis insertion

medial mid-shaft of humerus

biceps brachii long head action

supination and flexion of forearm; flexion of arm

biceps brachii long head origin

supraglenoid tubercle of scapula

biceps brachii long head insertion

radial tuberosity

biceps brachii short head action

flexes elbow joint and supinates forearm

biceps brachii short head origin

coracoid process of scapula

biceps brachii short head insertion

radial tuberosity

brachialis action

flexion of forearm

brachialis origin

anterior distal shaft of humerus

brachialis insertion

ulnar tuberosity and coronoid process of ulna

iliacus action

flexion of thigh

iliacus origin

iliac fossa; ala of sacrum

iliacus insertion

lesser trochanter of femur

psoas major action

flexion and lateral rotation of thigh; lateral flexion of trunk

psoas major origin

body of T12; bodies, transverse processes and intervertebral discs of L1-5 vertebrae

psoas major insertion

lesser trochanter of femur

sartorius action

flexion, lateral rotation, and abduction of thigh; flexion of leg

sartorius origin

anterior superior iliac spine (ASIS)

sartorius insertion

proximal medial shaft of tibia (PMST)

adductor magnus action

adduction and extension of thigh

adductor magnus origin

inferior ramus of pubis; ramus and tuberosity of ischium

adductor magnus insertion

gluteal tuberosity, linea aspera, and adductor tubercle of femur

adductor longus action

adduction of thigh

adductor longus origin

body and inferior ramus of pubis

adductor longus insertion

linea aspera of femur

adductor brevis action

adduction of thigh

adductor brevis origin

body and inferior ramus of pubis

adductor brevis insertion

linea aspera of femur

pectineus action

(MADF) adducts, flexes, and medially rotates thigh

pectineus origin

body and superior ramus of pubis

pectineus insertion

proximal posterior shaft of femur

gracilis action

adduction of thigh; flexion of leg

gracilis origin

body and inferior ramus of pubis

gracilis insertion

proximal medial shaft of tibia

rectus fermoris action

extension of leg; flexion of thigh

rectus femoris origin

anterior inferior iliac spine

rectus femoris insertion

patella; tibial tuberosity

vastus lateralis action

extension of leg

vastus lateralis origin

greater trochanter and linea aspera of femur

vastus lateralis insertion

patella; tibial tuberosity

vastus medialis action

extension of leg

vastus medialis origin

interotrochanteric line and linea aspera of femur

vastus medialis insertion

patella; tibial tuberosity

vastus intermedius action

extension of leg

vastus intermedius origin

anterolateral shaft of femur

vastus intermedius insertion

patella; tibial tuberosity

tensor fasciae latae action

flexion, abduction, and medial rotation of femur; stabilizes knee during full extension

tensor fasciae latae origin

crest and anterior superior iliac spine of ilium

tensor fasciae latae insertion

iliotibial tract

gluteus maximus action

extension, lateral rotation, and abduction of thigh

gluteus maximus origin

ala of ilium; sacrum; coccyx

gluteus maximus insertion

gluteal tuberosity of femur; iliotibial tract

gluteus medius action

abduction of thigh

gluteus medius origin

ala of ilium

gluteus medius insertion

greater trochanter of femur

gluteus minimus action

abduction of thigh