Muscle Practical

Front 1

Action of Buccinator

Back 1

Compress cheek, whistling, sucking

Hint 1

#15

Front 2

Origin of buccinator

Back 2

Molar region of maxilla & mandible

Hint 2

#15

Front 3

Insertion of buccinator

Back 3

Orbicularis oris

Hint 3

#15

Front 4

Action of Epicranius- frontal belly (frontalis)

Back 4

Raise eyebrows, wrinkles forehead

Hint 4

#5

Front 5

Origin of frontalis

Back 5

epicranial aponeurosis

Hint 5

#5

Front 6

Insertion of frontalis

Back 6

Skin of eyebrows, root of nose

Hint 6

#5

Front 7

Action of zygomaticus

Back 7

Raises lateral corner of mouth, smiling

Hint 7

#14

Front 8

Origin of zygomaticus

Back 8

Zygomatic bone

Hint 8

#14

Front 9

Insertion of zygomaticus

Back 9

Skin & muscle at corner of mouth

Hint 9

#14

Front 10

Action of masseter

Back 10

Close jaw, chewing

Hint 10

#16

Front 11

Origin of masseter

Back 11

Zygomatic arch

Hint 11

#16

Front 12

Insertion of masseter

Back 12

Angle of mandible

Hint 12

#16

Front 13

Action of orbicularis oris

Back 13

Close mouth kissing

Hint 13

#13

Front 14

Origin of orbicularis oris

Back 14

Maxilla, mandible, blended with lip muscles

Hint 14

#13

Front 15

Insertion of orbicularis oris

Back 15

Encircle mouth and skin at angles of mouth

Hint 15

#13

Front 16

Action of orbicularis oculi

Back 16

Close eye, blinking, squinting

Hint 16

#10

Front 17

Origin of orbicularis oculi

Back 17

Frontal & maxillary bones, ligaments, around orbit

Hint 17

#10

Front 18

Insertion of orbicularis oculi

Back 18

Tissue of eyelid

Hint 18

#10

Front 19

Action of Platysma

Back 19

Depress mandible, expressions of horror/ fright

Front 20

Origin of platysma

Back 20

Fascia of chest

Front 21

Insertion of platysma

Back 21

Lower margin of mandible, skin at corners of mouth

Hint 21

#28

Front 22

Origin of

Sternocleidomastoid

Back 22

Sternum/ clavicle

Hint 22

#28

Front 23

Insertion of sternocleidomastoid

Back 23

Mastoid process of temporal bone

Hint 23

#28

Front 24

Action of trapezius

Back 24

Head extention, raise, depress, fixate scapula

Hint 24

#96, 97, 98

Front 25

Action of pectoralis major

Back 25

Prime mover of arm flexion, adduct medially

Hint 25

#100, 101, 102

Front 26

Origin of pectoralis major

Back 26

Clavicle, sternum, cartilage of ribs 1-6

Hint 26

#100, 101, 102

Front 27

Insertion of pectoralis major

Back 27

Intertubercular sulcus of humerus

Hint 27

#100 101 102

Front 28

Action of deltoid

Back 28

Prime mover of arm abduction

Hint 28

#36

Front 29

Origin of deltoid

Back 29

Lateral 1/3 of clavicle, acromion and spine of scaptula

Hint 29

#36

Front 30

Insertion of deltiod

Back 30

Deltoid tuberosity of humerus

Hint 30

#36

Front 31

Action of latissimus dorsi

Back 31

Arm extension, adduct, medial rotate, power stroke

Hint 31

#93

Front 32

Origin of latissimus dorsi

Back 32

Lower 6 spinus processes thoracic

Hint 32

#93

Front 33

Insertion of latissimus dorsi

Back 33

Floor of intertubercular sulcus of humerus

Hint 33

#93