Chapter 11 (The Muscular System VII)

Question 1

How do muscles move the Pectoral Girdle ?

Answer 1

They stabilize the scapula so it can function as a stable origin for the muscles that move the humerus.

Question 2

What do scapular movements do ?

Answer 2

Increase the range of motion of the humerus

Question 3

Many humeral movements would not be possible without …

Answer 3

Scapular movements

Question 4

Muscles that Move the Pectoral Girdle

Answer 4

Anterior

Posterior

Question 5

Anterior

Answer 5

Subclavius
Pectoralis Minor
Serratus Anterior

Question 6

Posterior

Answer 6

Trapezius
Levator Scapulae
Rhomboid Major
Rhomboid Minor

Question 7

How many muscles that cross the shoulder joint originate on the scapula?

Answer 7

Seven of nine muscles

Question 8

Which muscles that cross the shoulder joint do not originate on the scapula?

Answer 8

The pectoralis major and latissimus dorsi.

Question 9

The pectoralis major and latissimus dorsi are considered …

Answer 9

Axial muscles because they do not originate on the scapula

Question 10

Four deep shoulder muscles …

Answer 10

Strengthen and stabilize the shallow shoulder joint
Act to join the scapula to the humerus
They form the rotator cuff

Question 11

Rotator cuff

Answer 11

A nearly complete circle of tendons around the shoulder joint