Lesson 9 (Part 2)

Question 1

What are the anterior chest muscles from superficial to deep? (4)

Answer 1

1. Pectoralis major
2. Pectoralis minor
3. Serratus
4. Intercostal muscles

Question 2

Where does the pectoralis major insert on?

Answer 2

The humerus

Question 3

Where is the pectoralis major located?

Answer 3

Makes up the majority of the chest/breast area

- doesnt cover the sternum

Question 4

Where is the pectoralis minor located?

Answer 4

Over ribs 3-5 attaching onto the scapular spine

- under the pectoralis major

Question 5

What are the branches of the aorta (left to right and anterior to posterior)?

Answer 5

1. Brachiocephalic trunk
2. Common carotid artery
3. Subclavian

Question 6

Serratus

Answer 6

Latin for saw

Question 7

What does the serratus anterior muscle cover?

Answer 7

The posterior portion

• outer aspect of the ribs
• doesnt go intercostal

Question 8

Where is the serratus anterior muscle located?

Answer 8

Over the ribs 1-8 on the posterior aspect on the lateral side
- on both sides (not in the medial aspect)

Question 9

What does the serratus anterior muscle do?

Answer 9

Acts to pull the scapula forward around the thorax

Question 10

How many intercostal muscles are there?

Answer 10

3

Question 11

What are the 3 intercostal muscles?

Answer 11

1. External intercostal
2. Internal intercostal
3. Innermost intercostal

Question 12

What are the posterior chest wall muscles? (4)

Answer 12

1. Rhomboid
2. Latissmus dorsi
3. Trapezius
4. Shoulder girdle muscles

Question 13

Where is the rhomboids major located?

Answer 13

Inferior to the rhomboids minor

- on the posterior aspect

Question 14

What does the rhomboid major connect?

Answer 14

The scapula to the vertebrae of the spinal column

Question 15

What does the rhomboid major do?

Answer 15

Keeps the scapula pressed against thoracic wall and to retract the scapula toward the vertebral column
- works with the rhomboid minor to do this

Question 16

Where is the rhomboid minor located?

Answer 16

Superior to the rhomboid major

- smaller

Question 17

What does the rhomboid minor do?

Answer 17

Same thing as the rhomboid major

- helps it

Question 18

Where is the trapezius located?

Answer 18

Is a diamond muscle on the posterior aspect that goes from the neck down the spine and out over the scapula

Question 19

What does the trapezius do? (2)

Answer 19

1. It moves the scapula

2. Supports the arm

Question 20

Where is the latissmus doris located?

Answer 20

Inferior to the scapula and covers the lower back

Question 21

Where does the latissmus dorsi attach to?

Answer 21

The medial aspect of the humerus

Question 22

How far does the trapezius go down?

Answer 22

To L1

Question 23

What does the latissmus dorsi do? (5)

Answer 23

1. Extension
2. Adduction
3. Transverse extension
   - horizontal abduction
4. Flexion from an extended position, and
5. Medial internal rotation of the shoulder joint

Question 24

What is the largest muscle in the upper body?

Answer 24

Latissmus dorsi

Question 25

What does the infraspinatus muscle cover?

Answer 25

The scapula up until the scapular spine

Question 26

What does the supraspinatus fill?

Answer 26

The groove of the scapula

Question 27

What does the supraspinatus muscle attach to?

Answer 27

The head of the shoulders

Question 28

What is considered to be a part of the rotator cuff?

Answer 28

Muscles that attach to the head of the humerus

Question 29

What are the 4 muscles that are apart of the rotator cuff?

Answer 29

1. Supraspinatus muscle
2. Infrasupinatus muscle
3. Teres minor muscle
4. Subscapularis muscle

Question 30

What do the rotator cuff muscles do?

Answer 30

They wrap around the humerus’s head and allows movement of the shoulder