muscle orgins and actions

Question 1

what is the action of the masseter

Answer 1

the major muscle that elevates the mandible

Question 2

what is the attachment point of the masseter

Answer 2

the zygomatic bone/ arch

Question 3

what is the action of the temporalis

Answer 3

elevate the mandible

Question 4

what is the attachment point of the temporalis

Answer 4

the temporal fossa

Question 5

what is the action of the frontalis

Answer 5

raise eyebrows an wrinkle forehead

Question 6

what is the attachment point of the frontalis

Answer 6

the frontal bone, epicardial aponeurosis

Question 7

what is the action of the orbicularis oculi

Answer 7

blink, squint, close your eyes

Question 8

what is the attachment point of the orbicularis oculi

Answer 8

tissue around the eyes

Question 9

what is the action of the orbicularis oris

Answer 9

pucker lips, kissing muscle

Question 10

what is the attachment point if the orbicularis oris

Answer 10

tissue around the mouth

Question 11

what is the action of the sternocleidomastoid

Answer 11

when using 1 muscle: ipsilateal contraction and rotation (contract left: left flexion, right rotation)
whn using 2 muscles: neck flexion (looking down)

Question 12

what is the attachment point of the sternocleidomastoid

Answer 12

insertion is the mastoid process of the temporal bone

Question 13

what is the action of the pectoralis major

Answer 13

adduction of the arm

Question 14

what is the attachment point of the pectoralis major

Answer 14

intertubercular socius (groove)

Question 15

what is the action of the rectus abdominis

Answer 15

flex the trunk

Question 16

what is the attachmnet point of the rectus abdominis

Answer 16

pubic symphysis of the xiphoid process

Question 17

what is the action of the external oblique

Answer 17

unilateral conraction: lipsilateral flextion or rotation
contraction of both: flexion of the trunk

Question 18

what is the attachment point of the external oblique

Answer 18

the ribs

Question 19

what is the action of the trapezuis

Answer 19

shrugging your shoulders, neck extension

Question 20

what is the attachment point of the trapezius

Answer 20

the spine of the scapula

Question 21

what is the action of the latissimus dorsi

Answer 21

arm extension at shoulder joint (push arm back)

Question 22

what is the attachment point of the latissimus dorsi

Answer 22

posterior muscle attached to intertubercular socius (groove)

Question 23

what is the action of the deltoid

Answer 23

main arm abduction (pshing arm out to the side)

Question 24

what is the attachment point of the deltoid

Answer 24

deltoid tuberosity of diaphysis of humerus

Question 25

what is the action of the erector spinae

Answer 25

straighten the back

Question 26

what is the attachment point of the erector spinae

Answer 26

transverse process of vertebrae

Question 27

what is the action of the biceps brachii

Answer 27

flex the arm at elbow joint

Question 28

what is the attachmnet point of biceps brachii

Answer 28

radial tuberosity

Question 29

what is the action of the triceps brachii

Answer 29

extends the arm at the elbow

Question 30

what is the insertion of the triceps brachii

Answer 30

olecranon fossa

Question 31

what is the action of the pronator teres

Answer 31

pronate the arms (palms face forward/ down)

Question 32

what is the attachment point of the pronator teres

Answer 32

origin on medial side and insertion on lateral side

Question 33

what is the action of the supinator

Answer 33

supinate the arms (palms facing down/ back)

Question 34

what is the attchment point of the supinator

Answer 34

origin on lateral side and insertion on medial side

Question 35

what is the action of the gluteus maximus

Answer 35

extension of the leg at the hip

Question 36

what is the attachment point of the gleuteus maximus

Answer 36

gluteal tuberosity on proximal end of femur

Question 37

what is the action of the hamstring muscles

Answer 37

extend the leg at hip and cause flexion of knee bone

Question 38

what is the attachment point of the hamstring muscles

Answer 38

ischial tuberosity of ischium

Question 39

what is the action of the adductor muscles

Answer 39

adduct the leg (bring it towards middle)

Question 40

what is the attachment point of the adductor muscles

Answer 40

Linea aspera

Question 41

what is the action of the sartorius

Answer 41

allows you to sit with legs crossed

Question 42

what is the attachmnet point of the sartorius

Answer 42

anterior supirior iliac spine

Question 43

what is the action of the quadriceps femoris

Answer 43

flex leg at him and extend leg atknee (kick forward)

Question 44

what is the attachment point of the quadriceps femoris

Answer 44

tendon that lays over the patella

Question 45

what is the action of the gastrocnemius

Answer 45

plantar flexion (stand on tippy toes)

Question 46

what is the attachment point of the gastrocnemius

Answer 46

achelous tendoes attaced to calcaneus

Question 47

what is the action of the tibialis anterior

Answer 47

pull toes up

Question 48

what is the attachment point of the tibialis anterior

Answer 48

tarsal and metatarsal bones