Chp 10-Muscles of Respiration

Question 1

Muscles of Respiration

Answer 1

1. External intercostals
2. Internal intercostals
3. Diaphragm
4. Scalenes (Respiration Synergists)
5. Pectoralis minor (Respiration Synergists)

Question 2

External intercostals: note: do what?

Answer 2

pull rib cage up and out

Question 3

External intercostals - O =

Answer 3

O: supero-lateral

Question 4

External intercostals - I =

Answer 4

I: infero-medial

Question 5

External intercostals - A =

Answer 5

A: elevates - inspiration

Question 6

Internal intercostals: note: do what?

Answer 6

move rib cage down and in

Question 7

Internal intercostals - O =

Answer 7

O: super-medial

Question 8

Internal intercostals - I =

Answer 8

I: infero-lateral

Question 9

Internal intercostals - A =

Answer 9

A: depresses – expiration

Question 10

Diaphragm - O =

Answer 10

separates thoracic and abdominal cavities

Question 11

Diaphragm - I =

Answer 11

1. separates thoracic and abdominal cavities
2. 3 aperatures: aortic hiatus, esophageal hiatus, vena cava foramen

Question 12

Diaphragm - A =

Answer 12

chief m. of inspiration

Question 13

Scalenes - O =

Answer 13

O: cervical transverse processes

Question 14

Scalenes - I =

Answer 14

I: ribs #1 & #2

Question 15

Scalenes - A =

Answer 15

A: lifts ribs superiorly for inspiration

Question 16

Pectoralis Minor - O =

Answer 16

O: ribs 3-5

Question 17

Pectoralis Minor - I =

Answer 17

I: coracoid process

Question 18

Pectoralis Minor - A =

Answer 18

A: depresses scapula, elevates ribs when scapula is fixed