Muscles To Know (Part 1)

Question 1

Where would you find external intercostals?

Answer 1

Between the ribs

Question 2

What do external intercostals do?

Answer 2

Elevates rib cage when inhaling

Question 3

Where would you find internal intercostals?

Answer 3

In between the ribs with external intercostals lateral and the sternum medial

Question 4

What do internal intercostals do?

Answer 4

During forceful exhalation (eg. coughing) it depresses and retracts the ribs

Question 5

What major role does the diaphragm take part in?

Answer 5

Respiration

Question 6

What does contraction of the diaphragm mean?

Answer 6

Increase in volume of the thoracic cavity

- air is pulled into lungs

Question 7

Where would you find external obliques?

Answer 7

Most outer abdominal muscles

- can see them (superficial)

Question 8

Where would you find internal obliques?

Answer 8

Below the external abdominal muscle

Question 9

What do the abdominal oblique muscles allow? (3)

Answer 9

1. Twists
2. Side bends
3. Sit ups

Question 10

Where would you find the transverse abdomen muscle?

Answer 10

Below the obliques muscles

- inner most

Question 11

What does the transverse abdominis help with? (3)

Answer 11

1. Compress the ribs and viscera
2. Forced expiration
3. Bowl movements

Question 12

Where would you find the rectus abdominis?

Answer 12

Runs vertically along the abdominal wall

Question 13

What is the rectus abdominus important for?

Answer 13

Postural muscles

Question 14

What does the rectus abdominus allow? (3)

Answer 14

1. Flexing of the lumbar spine
   - crunches
2. Forceful respiration
3. Compression

Question 15

Where would you find the sternocleidomastoid?

Answer 15

Runs obliquely across the side of the neck

Question 16

What does the sternocleidomastoid muscle do? (4)

Answer 16

1. Rotates the head to the opposite side
2. Rotates the head obliquely
3. Flexes the neck
4. Extends the head

Question 17

Where would you find the trapezius?

Answer 17

Middle upper back

Question 18

What does the trapezius do? (4)

Answer 18

1. Extends the head and neck
2. Rotates the head and neck
3. Shrugs the shoulders
   - scapula moves up and down
4. Squeezes should blades together

Question 19

Where would you find the deltoid?

Answer 19

By the shoulders

Question 20

What does the deltoid do?

Answer 20

Abducts the upper arm

Question 21

Where would you find the latissimus dorsi?

Answer 21

Mid back

Question 22

What does the latissimus dorsi do?

Answer 22

Extends the upper arm (posteriorly) from the shoulder

Question 23

Where would you find the pectoralis minor?

Answer 23

Starts by the scapula and goes down to link with the ribs

Question 24

What does the pectoralis minor do? (2)

Answer 24

1. Brings the shoulders forward

2. Lifts the rib cage

Question 25

Where would you find the pectoralis major?

Answer 25

On your upper chest

Question 26

What does the pectoralis major do? (2)

Answer 26

1. Adducts the arm
   - medial direction
2. Extends the arm at the shoulder from a flexed position
   - anterior direction