Muscles (head, pectoral girdle, and arm+shoulder) also Lab Quiz Questions

Question 1

What muscles move the Head and Anterior Neck

Answer 1

Masseter, Sternocleidomastoid, and Splenius

Question 2

Masseter

Answer 2

A: elevates mandible to close jaw
O: zygomatic arch
I: lateral surface of mandibular jaw

Question 3

Sternocleidomastoid

Answer 3

A: flexion (bilateral) and lateral flexion of neck and rotates head
O: manubrium sternal end of clavicle
I: mastoid process of temporal bone

Question 4

Splenius

Answer 4

A: extension of head and neck, lateral flexion and rotation of head and neck
O: spinous process of inferior cervicle and superior thoracic vertebrae
I: mastoid process, occipital bone, and transverse processes of superior cervicle vertebrae

Question 5

What two muscles that move the head and neck have the mastoid process as an insertion point?

Answer 5

Sternocleidomastoid and Splenius

Question 6

What muscles move the pectoral girdle?

Answer 6

Trapezius, Rhomboids (major+minor), Pectoralis minor, and Serratus anterior

Question 7

Trapezius (P)

Answer 7

A: elevate, retract, and rotate, and depresses scapula and extends neck
O: posterior surface of occipital bone, spinous processes of thoracic vertebrae
I: lateral third of clavicle, acromion and spine of scapula

Question 8

Rhomboid Major

Answer 8

A: adducts scapula and performs downward rotations
O: ligamentum nuchae; and spinous processes of vertebrae C7 and T1
I: medial border of scapula

Question 9

Rhomboid Minor

Answer 9

A: adducts scapula and performs downward rotations
O: spinous processes of vertebra T2-T5
I: medial border of scapula

Question 10

What is the main action of the rhomboids?

Answer 10

adducting scapula and performing downward rotations

Question 11

What insertions do the rhomboids both share what insertion?

Answer 11

The medial border of the scapula

Question 12

Pectoralis minor (A)

Answer 12

A: depresses and protracts shoulder; rotates scapula down and forward, plus elevates ribs
O: external surfaces of ribs 3-5
I: coracoid process of scapula

Question 13

Serratus Anterior (A)

Answer 13

A: protracts shoulder; rotates superiorly (upward)
O: external surfaces of ribs 1-8
I: medial border of scapula

Question 14

what muscles of the pectoral girdle have the share the medial border as an insertion sight?

Answer 14

rhomboids and serratus anterior

Question 15

what muscles of the pectoral girdle both protract the shoulder?

Answer 15

Pectoralis minor and Serratus Anterior

Question 16

What muscles move the arm at the shoulder?

Answer 16

deltoid, supraspinatus, subscapularis, teres major/teres minor, infraspinatus, coracobrachialis, pectoralis major, and latissimus dorsi

Question 17

Deltoid

Answer 17

A: medial rotation + flexion of arm; (M) abduction of arm, and (P) lateral rotation + extension of arm
O:lateral third of clavicle, acromion process, and spine of scapula
I: deltoid tuberosity of humerus

Question 18

Supraspinatus

Answer 18

A: ABDuction of arm
O: supraspinous process fossa of scapula
I: greater tubercle of humerus

Question 19

Subscapularis

Answer 19

A: ADDuction and medial rotation of arm
O: subscapular fossa of scapula
I: lesser tubercle of humerus

Question 20

Teres Major

Answer 20

A: extension, ADDuction, and medial rotation of arm
O: scapula near inferior angle
I: medial lip of tubercal groove of humerus

Question 21

Teres Minor

Answer 21

A: lateral rotation of arm
O: lateral border of scapula
I: greater tubercle of humerus

Question 22

Infraspinatus

Answer 22

A: lateral rotation of arm
O: Infraspinous fossa of scapula
I: greater tubercle of humerus

Question 23

Coracobrachialis

Answer 23

A: flexion and ADDuction of arm
O: coracoid process of scapula
I: medial surface of humerus

Question 24

Pectoralis Major

Answer 24

A: flexes, ADDucts, and medially rotates humerus
O: medial half of clavicle; sternum, and costal cartilages of ribs 1-6
I: lateral lip intertubercular groove of humerus

Question 25

Latissimus Dorsi

Answer 25

A: extension, ADDuction, and medial rotation of arm
O: spinous processes of vertebrae, thoracic vertebrae, illiac create, inferior 3 ribs
I: intertubercular groove of humerus

Question 26

Which of the following actions is most likely carried out if a muscle cross the joint medially?

Answer 26

ADDuction

Question 27

When a muscle contracts, the muscle ____________________ and the distance between the two attachments points is _________________.

Answer 27

shortens; reduced

Question 28

Which of the following actions involves moving the entire leg away laterally from the body, at the hip and along the frontal plane?

Answer 28

ABduction

Question 29

Action of masseter?

Answer 29

elevation

Question 30

The splenius capitis is located on the ______________ side of the neck and the muscle’s action is _________________ when both the right and left splenius muscles contract?

Answer 30

posterior; extension

Question 31

Which of the following remains mostly stationary during muscle contraction?

Answer 31

origin

Question 32

Which cranial bone does the sternocleidomastoid attach to?

Answer 32

temporal bone

Question 33

Which two bones does the pectoralis minor attach to? (select two)

Answer 33

scapula and ribs

Question 34

The rhomboid major and minor muscles are deep/superficial to the trapezius and are attached to the medial/lateral border of the scapula.

Answer 34

deep/medial

Question 35

Name the action of the supraspinatus muscle at the shoulder joint.

Answer 35

ABDuction

Question 36

At different times, the deltoid can perform different functions. Which of the following “muscle part-action” combination is correct. Select three.

Answer 36

whole muscle- ABDuction
anterior part- flexion
posterior part- lateral rotation

Question 37

Name the muscle that originates on the coracoid process of the scapula and insert on the medial margin of the shaft of the humerus.

Answer 37

coracobrachialis

Question 38

Which of the following muscles attach (insert) on the proximal humerus? (select three)

Answer 38

pectorialis major, teres major, and infraspinatus

Question 39

Which muscle attaches to the anterior side of the scapula?

Answer 39

subscapularis