Muscles of breathing

Question 1

3 types of respiration

Answer 1

Quiet inspiration
Forced inspiration (quiet + other muscles)
Forced expiration

Question 2

Main muscle of inspiration?

Answer 2

Diaphragm

Question 3

Action of the diaphragm?

Answer 3

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

Question 4

Other primary muscles of inspiration? (2)

Answer 4

External intercostal muscles

Interchondral portion of Internal intercostal muscles

Question 5

Secondary muscles of inspiration of the dorsal thorax?

Answer 5

Lateral iliocostalis cervicis
Lateral iliocostalis thoracis
Levatores costarum brevis
Levatores costarum longis
Serratus posterior superior
Latissimus dorsi
Trapezius

Question 6

Secondary muscles of inspiration of the ventral thorax?

Answer 6

Pec major
Pec minor
serratus anterior
subclavius

Question 7

Secondary muscles of inspiration of the neck? (4)

Answer 7

Sternocleidomastoid
scalenes
Levator scapulae
rhomboids

Question 8

Primary muscles of expiration? (2)

Answer 8

transversus abdominus
internal oblique

Question 9

Abdominal muscles of expiration? (2)

Answer 9

Rectus abdominis
External oblique abdominis

Question 10

Secondary muscles of expiration? (5)

Answer 10

Internal intercostal muscles
Transversus thoracis
Serratus posterior inferior
Quadratus lumborum
Lateral Iliocostalis lumborum

Question 11

Muscles of both insp and exp:

Answer 11

Latissimus dorsi

Iliocostalis thoracis