Chapter 11 The Muscular System

Question 0

Origin
Ribs 5-12
2

Answer 0

External oblique

Transverse abdominus

Question 1

Origin

Superior 8 or 9 ribs

Answer 1

Serratus anterior

Question 2

Origin
Iliac crest, inguinal ligament & thoracolmnar fascia
2

Answer 2

Internal oblique

Transverse abdominus

Question 3

Origin

Pubic crest & Pubic symphysis

Answer 3

Rectus abdominus

Question 4

Insertion

Vertebral border, inferior angle of scapula

Answer 4

Serratus anterior

Question 5

Insertion

Iliac crest & linea alba

Answer 5

External oblique

Question 6

Insertion

Ribs 7-10, linea alba

Answer 6

Internal oblique

Question 7

Insertion

Cartilage 5&6 ribs, xiphoid process

Answer 7

Rectus abdominus

Question 8

Insertion

Xiphoid process, linea alba, pubis

Answer 8

Transverse abdominus

Question 9

Action

Abducts scapula, rotates, elevates ribs

Answer 9

Serratus anterior

Question 10

Action
Compress abdomen, flex vertebral column
4

Answer 10

External oblique
Internal oblique
Transverse abdominus
Rectus abdominus

Question 11

Origin

Clavicle, sternum, ribs 2-6

Answer 11

Pectoral is major

Question 12

Origin

Sternum & clavicle

Answer 12

Sternocleodomastoid

Question 13

Origin

Spines of T7-L5, lumbar vertebrae, crest of sacrum, ilium, inferior 4 ribs

Answer 13

Latissimus dorsi

Question 14

Origin

Superior nuchal line(occipital bone) ligament nuchae, spines C7-T12

Answer 14

Trapezius

Question 15

Insertion

Clavicle, acrimion spine of scapula

Answer 15

Trapezius

Question 16

Insertion

Greater tubercle, lateral lip of intertubercular sulcus of humerus

Answer 16

Pectoralis major

Question 17

Insertion

Mastoid process of temporal bone

Answer 17

Sternocleidomastoid

Question 18

Insertion

Intertubercular sulcus of humerus

Answer 18

Latissimus dorsi

Question 19

Action

Rotate scapula, addict scapula, stabilize scapula

Answer 19

Trapezius

Question 20

Action
Adductor & medically rotates arm at shoulder joint
2

Answer 20

Pectoralis major

Latissimus dorsi

Question 21

Action

Flex vertebral column, flex head, elevate sternum, rotate head

Answer 21

Sternocleidomastoid

Question 22

Origin

Opening of mouth

Answer 22

Orbicularis oris

Question 23

Origin

Alveolar process of maxilla & mandible

Answer 23

Buccinator

Question 24

Origin | Maxilla & zygomatic arch

Answer 24

Masseter

Question 25

Origin | Deltoid & Pectoralis major

Answer 25

Platysma

Question 26

Origin zygomatic bone

Answer 26

Zygomaticus

Question 27

Origin | Medial wall of orbit

Answer 27

Orbicularis oculi

Question 28

Origin | Temporal bone

Answer 28

Temporalis

Question 29

Insertion | Skin at corner of mouth

Answer 29

Orbicularis oris

Question 30

Insertion | Orbicularis oris

Answer 30

Buccinator

Question 31

Insertion | Angle & ramos of mandible

Answer 31

Masseter

Question 32

Insertion | Mandible, angle of mouth, skin on lower face

Answer 32

Platysma

Question 33

Insertion | Skin at angle of mouth, orbicularis oculi, upper lip

Answer 33

Zygomaticus

Question 34

Insertion | Circular path around orbit

Answer 34

Orbicularis oculi

Question 35

Insertion | Coronoid process & Ramos of mandible

Answer 35

Temporalis

Question 36

Action | Closes lips, compresses lips against teeth, shapes lips during speech

Answer 36

Orbicularis oris

Question 37

Action | Presses cheek against lips & teeth, assists in chewing

Answer 37

Buccinator

Question 38

Insertion | Closes mouth

Answer 38

Masseter

Question 39

Insertion | Smiling, raises upper lip

Answer 39

Zygomaticus

Question 40

Action | Closes eye

Answer 40

Orbicularis oculi

Question 41

Insertion | Elevates & retracts mandible

Answer 41

Temporalis

Question 42

Action | Closes lips, compress lips against teeth, shapes lips during speech

Answer 42

Orbicularis oris

Question 43

Action | Presses cheek against lips & teeth, assists in chewing

Answer 43

Buccinator

Question 44

Action | Closes mouth

Answer 44

Masseter

Question 45

Action | Draws out part of lower lip inferiorly and posteriorly, depresses mandible

Answer 45

Platysma

Question 46

Action | Smiling, raises upper lip

Answer 46

Zygomaticus

Question 47

Action | Closes eye

Answer 47

Orbicularis oculi

Question 48

Action | Elevates & retracts mandible

Answer 48

Temporalis

Question 49

Origin | Acromial extremity of clavicle, acromion of scapula, spine of scapula

Answer 49

Deltoid

Question 50

Origin Long head originates from tubercle above glenoid cavity of scapula ; short head originates from coracoid process of scapula

Answer 50

Biceps brachii

Question 51

Insertion | Radial tuberosity of radius & bicipital aponeurosis

Answer 51

Biceps brachii

Question 52

Action | Flexes forearm at elbow joint, supinates forearm at radioulnar joints & flexes arm at shoulder joint

Answer 52

Biceps brachii

Question 53

Origin | Infraglenoid tubercle, a projection inferior to glenoid cavity of scapula

Answer 53

Triceps brachii- long head

Question 54

Origin | Entire posterior surface of humerus inferior to a groove for the radial nerve

Answer 54

Triceps brachii-medial head

Question 55

Insertion | Olecranon of ulna

Answer 55

Triceps brachii

Question 56

Action | Extends forearm at elbow joint and extends arm at shoulder joint

Answer 56

Triceps brachii

Question 57

Origin | Medial epicondyle of humerus

Answer 57

Flexor carpi radialis

Question 58

Insertion | Second & third metacarpals

Answer 58

Flexor carpi radialis

Question 59

Action | Flexes and abducts hand at

Answer 59

Flexor carpi radialis