Muscles of Respiration

Question 1

What are the 3 types of breath?

Answer 1

Quiet inspiration, forced inspiration, and forced expiration

Question 2

Where is the diaphragm located?

Answer 2

Separates the thoracic and abdominal cavities

Question 3

What is another name for foramen?

Answer 3

Hiatus

Question 4

What is the origin of the diaphragm?

Answer 4

Internal surface of ribs 7-12 (costal cartilages), inner inferior surface of xiphoid process, upper lumbar vertebrae.

Question 5

What is the insertion of the diaphragm?

Answer 5

Central tendon

Question 6

What is the action of the diaphragm?

Answer 6

primary mover of inspiration; increases vertical dimension of thorax; increases intra-abdominal pressure

Question 7

What is the function of the phrenic nerve?

Answer 7

Mediates both sensory and motor information for diaphragm

Question 8

What are the external intercostal muscles?

Answer 8

Deep muscles of the thorax

Question 9

What is the action of the Interchondral portion of Internal intercostal muscles?

Answer 9

Expands the ribcage

Question 10

What are the 3 categories of accessory muscles?

Answer 10

Dorsal (Posterior) thorax, Ventral (Anterior) thorax,

Neck

Question 11

Where is the Latissimus dorsi and what does it look like?

Answer 11

Crests of sacrum and ilium, big and flat muscle

Question 12

What is the action of the trapezius?

Answer 12

maintains trunk stability for respiration

Question 13

What is the action of the pectoralis major?

Answer 13

with arm fixed, pulls sternum and ribs upward during forced inspiration

Question 14

What is the action of the pectoralis minor?

Answer 14

with scapula fixed, elevates ribs 3-5

Question 15

What is the action of Sternocleidomastoid

Answer 15

raises sternum, and thus elevates ribs

Question 16

What is the action of levatus scapulae?

Answer 16

elevates scapula

Question 17

What is the action of the rhomboids?

Answer 17

elevates scapula

Question 18

Contraction of deep thoracic muscles _____ anterior-posterior and transverse dimensions

Answer 18

decreases

Question 19

Contraction of abdominal/back muscles decreases _____ (vertical) dimension.

Answer 19

superior-inferior

Question 20

Where is the linea alba?

Answer 20

runs vertically from xiphoid process of sternum to pubic symphysis in pelvic girdle

Question 21

Which muscles compress abdomen and rib cage?

Answer 21

Rectus abdominis,
External oblique abdominis,
Transversus abdominis,
Internal oblique

Question 22

Which muscles partake in both inspiration and expiration?

Answer 22

Latissimus dorsi, Iliocostalis thoracis

Question 23

Action of the Lateral iliocostalis cervicis?

Answer 23

elevates ribs

Question 24

Action of Lateral iliocostalis thoracis?

Answer 24

stabilizes back wall of ribcage with lateral iliocostalis cervicis

Question 25

Action of Levatores costarum brevis and longus?

Answer 25

Eleveates ribs

Question 26

Action of Serratus posterior superior?

Answer 26

elevates rib to which it attaches

Question 27

Action of Latissimus dorsi?

Answer 27

with arm fixed, raises lower ribs

Question 28

Action of subclavius?

Answer 28

Elevates first rib

Question 29

Action of scalenes?

Answer 29

`Elevates the ribs

Question 30

Action of Transversus abdominis?

Answer 30

Compresses abdomen and rib cage

Question 31

Action of the Internal oblique?

Answer 31

compresses abdomen and rib cage

Question 32

action of Quadratus lumborum?

Answer 32

pulls last rib inferiorly during expiration

Question 33

Action of Lateral Iliocostalis lumborum?

Answer 33

Depresses lower six ribs