Muscles

Question 1

1. origin and insertion 2. movements

Answer 1

sternocleidomastoid 1. manubrium/clavicle –> temporal bone. 2. one muscle rotates face to opposite side. two muscles causes flexion of neck.

Question 2

1. origin and insertion 2. movement 3. location

Answer 2

splenius 1. vertebrae –> occipital column. 2. acting singly they rotate head together they extend head. 3. located on posterior side and under the trapezius in neck region.

Question 3

1. origin and insertion. 2. movement.

Answer 3

iliocostalis lumborum 1. ilium –> ribs. 2. extends vertebral column

Question 4

name this structure.

Answer 4

thoracolumbar fascia. base of lower back.

Question 5

1. origin and insertion. 2. movement. 3. direction of fibers.

Answer 5

rectus abdominis 1. pubic bone –> costal cartilage. 2. flexes vertebral column. fibers run vertical. six pack.

Question 6

name the structure.

Answer 6

rectus sheath.

Question 7

1. origin and insertion. 2. movement. 3. direction of fibers.

Answer 7

external obliques. 1. ribs –> rectus sheath. 2. compresses abdomin and rotates vertebral column. 3. put hands in pocket, fingers parallel fibers.

Question 8

1. origin and insertion. 2. movement. 3. direction of fibers

Answer 8

internal oblique. 1. thoracolumbar fascia –> rectus sheath. 2. compresses abdomen and rotates vertebral column. 3. right angel to external obliques

Question 9

1. insertion and origin. 2. movement. 3. direction of fibers.

Answer 9

transversus abdominis. 1. thoracolumbar fascia –> rectus sheath. 2. compresses abdomen. 3. horizantal fibers. and deepest of the abdominal muscles.

Question 10

1. Origin and insertion. 2. Movement

Answer 10

Pectoralis major. 1. Clavicle and sternum –> humerus 2. Flexion, adduction, medial rotation of arm.

Question 11

1. Origin and insertion. 2. Movement.

Answer 11

Pectoralis minor. 1. Ribs –> scapula. 2. Depresses shoulder.

Question 12

1. insertion and origin. 2. movement

Answer 12

trapezius. 1. occipital bone and thoracic vertabre –> clavicle and scapula 2. adduction of scapula, upper fibers elevate scapula, lower fibers depress scapula.

Question 13

1. insertion and origin. 2. movement. 3. location

Answer 13

rhomboideus 1. thoracic vertebrae –> scapula 2. adduction of scapula 3. located beneath trapezius.

Question 14

1. insertion and origin. 2. movement

Answer 14

serratus anterior. 1. ribs –> scapula 2. abduction of scapula

Question 15

1. insertion and origin. 2. movement

Answer 15

levator scapulae. 1. cervical vertebrae –> scapula. 2. elevates scapula.

Question 16

1. insertion and origin. 2. movement

Answer 16

deltoid. 1. clavicle and scapula –> humerus. 2. abduction of arm, anterior fibers flex and medially rotate, posterior fibers extend and laterally rotate.

Question 17

1. insertion and origin. 2. movement

Answer 17

latissimus dorsi. 1. thoracolumbar fascia –> humerus 2. adduction, extension and medial rotation of arm.

Question 18

1. insertion and origin. 2. movement

Answer 18

teres major. 1. scapula –> humerus. 2. adduction, extension and medial rotation of arm.

Question 19

1. insertion and origin. 2. movement. 3. group

Answer 19

teres minor. 1. scapula –> humerus. 2. lateral rotation of arm. 3. rotator cuff group

Question 20

1. insertion and origin. 2. movement 3. group

Answer 20

infraspinatus. 1. scapula –> humerus. 2. lateral rotation of arm. 3. rotator cuff group

Question 21

1. Origin –> insertion. 2. Movement. 3. Group

Answer 21

subscapularis 1. scapula to humerus. 2. medial rotation of arm. 3. rotator cuff group.

Question 22

1. Origin –> insertion. 2. Movement

Answer 22

biceps brachii. 1. scapula –> radius and connective tissue. 2. flexion of forearm.

Question 23

1. Origin –> insertion. 2. Movement 3. location

Answer 23

brachialis 1. humerus –> ulna. 2. flexion of forearm. 3. lateral to biceps brachii

Question 24

1. Origin –> insertion. 2. Movement 3. location

Answer 24

brachioradialis 1. humerus –> radius. 2. flexion of forearm. 3. more distal than brachialis and biceps brachii.

Question 25

1. Origin –> insertion. 2. Movement

Answer 25

triceps brachii 1. scapula and humerus –> ulna 2. extension of forearm.

Question 26

1. Origin –> insertion. 2. Movement 3. location

Answer 26

flexor/pronator group 1. humerus, radius, ulna –> hand 2. flexion of wrist/pronation 3. medial and anterior side of forearm

Question 27

1. Origin –> insertion. 2. Movement 3. location

Answer 27

extensor/supinator group 1. humerus, radius, ulna –> hand 2. extension of wrist, supination. 3. lateral and posterior side

Question 28

broad tough sheet of connective tissue on the lateral aspect of the thigh.

Answer 28

fascia lata.

Question 29

1. location

Answer 29

iliotibial tract. 1. located near the knee on the most lateral aspect of the thigh where the fascia lata is thickest and most like a strip.

Question 30

1. Origin –> insertion. 2. Movement

Answer 30

tensor fasciae latae 1. ilium –> iliotibial tract 2. tenses fascia lata and abduction of thigh.

Question 31

1. Origin –> insertion. 2. Movement. 3. Location.

Answer 31

gluteus maximus. 1. ilium and sacrum –> femur. 2. extension and lateral rotation of thigh. 3. visible on prone cadaver

Question 32

1. Origin –> insertion. 2. Movement 3. location

Answer 32

gluteus medius. 1. ilium –> femur. 2. abduction of thigh. 3. deep to the gluteus maximus.

Question 33

1. Origin –> insertion. 2. Movement. 3. Location

Answer 33

gracilis. 1. pubis –> tibia. 2. adduction of thigh. 3. medial aspect of the thigh.

Question 34

1. Origin –> insertion. 2. Movement. 3. Location

Answer 34

adductor magnus. 1. ischium –> femur. 2. adduction of thigh. 3. medial aspect of thigh and extends toward back of thigh. largest of the adductors.

Question 35

1. Origin –> insertion. 2. Movement. 3. Location

Answer 35

adductor longus. 1. pubis –> femur. 2. adduction of thigh. 3. superior and medial to adductor magnus.

Question 36

1. Origin –> insertion. 2. Movement. 3. Location

Answer 36

psoas. 1. vertebrae –> femur. 2. flexion at thigh. 3. only seen in heavily dissected abdomen.

Question 37

1. Origin –> insertion. 2. Movement. 3. Location

Answer 37

iliacus. 1. ilium –> femur. 2. flexion at thigh. 3. only seen in dissected abdomen.

Question 38

1. Origin –> insertion. 2. Movement. 3. Location

Answer 38

iliopsoas. 1. iliacus and psoas –> femur. 2. flexion at thigh. 3. seen anteriorly and lateraly and is the combination of the iliacus and psoas muscles. triangle.

Question 39

1. Origin –> insertion. 2. Movement. 3. Location

Answer 39

sartorius. 1. ilium –> tibia. 2. flexion and lateral rotation of thigh. 3. thin, strap-like and starts lateral to medial.

Question 40

1. Origin –> insertion. 2. Movement. 3. Location. 4. group

Answer 40

biceps femoris. 1. ischium and femur –> tibia and fibula. 2. extension of thigh, flexion of lower leg. 3. superficial to semimembranosus and lateral to semitendinosus. 4. hamstring group.

Question 41

1. Origin –> insertion. 2. Movement. 3. Location. 4. Group

Answer 41

semimembranosus. 1. ischium –> tibia. 2. extension of thigh and flexion of lower leg. 3. deep to semitendinosus. 4. hamstrings.

Question 42

1. Origin –> insertion. 2. Movement. 3. Location. 4. Group

Answer 42

semitendinosus. 1. ischium –> tibia. 2. extension of thigh and flexion of lower leg. 3. medial to biceps femoris and superficial to semimembranosus. 4. Hamstring.

Question 43

1. Origin –> insertion. 2. Movement. 3. Location. 4. Group

Answer 43

rectus femoris. 1. ilium –> tibia. 2. extension of lower leg and flexion of thigh. 3. between the vastus lateralis and medialis and superficial to the vastus intermedius. 4. Quadriceps.

Question 44

1. Origin –> insertion. 2. Movement. 3. Location. 4. Group

Answer 44

vastus lateralis. 1. femur –> tibia. 2. extension of lower leg. 3. lateral to rectus femoris. 4. Quadriceps.

Question 45

1. Origin –> insertion. 2. Movement. 3. Location. 4. Group

Answer 45

vastus medialis. 1. femur –> tibia. 2. extension of lower leg. 3. medial to rectus femoris. 4. Quadricep.

Question 46

1. Origin –> insertion. 2. Movement. 3. Location. 4. Group

Answer 46

vastus intermedius. 1. femur –> tibia. 2. extension of lower leg. 3. deep to vastus lateralis. 4. Quadricep.

Question 47

1. Origin –> insertion. 2. Movement. 3. Location

Answer 47

soleus. 1. tibia and fibula –> calcaneus. 2. plantar flexion. 3. superficial to gastrocnemius. 3. calf.

Question 48

1. Origin –> insertion. 2. Movement. 3. Location.

Answer 48

gastrocnemius. 1. femur –> calcaneus. 2. flexion of lower leg and plantar flexion. 3. calf crosses knee and ankle joints.

Question 49

1. Origin –> insertion. 2. Movement. 3. Location

Answer 49

tibialis anterior. 1. tibia –> first metatarsal. 2. dorsiflexion and inversion of foot. 3. lies next to tibia on anterior side.

Question 50

1. Origin –> insertion. 2. Movement. 3. Location

Answer 50

peroneus longus and brevis. 1. fibula –> metatarsals. 2. plantar flexion and eversion of foot. 3. seen on prone cadaver. longus down the center (splits the brevis). on lateral side of calf.

Question 51

1. Origin –> insertion. 2. Movement. 3. Location

Answer 51

extensor digitorum longus. 1. tibia and fibula –> phalanges. 2. eversion of foot and extension of toes. 3. anterior to peroneus longus and brevis. lateral and anterior side of calf.

Question 52

1. Origin –> insertion. 2. Movement. 3. Location

Answer 52

extensor hallucis longus. 1. fibula –> phalanx (toe) 2. inversion of foot and extension of big toe. 3. anterior of calf to big toe. hard to see unless dissected.