Chapter 2-Respiratory System-Muscles of Expiration

Question 1

Muscles of Expiration

Answer 1

1. Muscles of Thorax and Back,
2. Abdominal Muscles of Expiration,
3. Muscles of Upper Limb

Question 2

Expiration
Muscles of Thorax
Anterior-Lateral
(two muscles)

Answer 2

1. Internal intercostal (interosseous portion) pg 30 1A

2. Transversus thoracic, depresses ribs. pg 31 2A

Question 3

Muscles of Back,
Posterior Thoracic Muscles
(2 muscles)

Answer 3

1.Subcostals (sub means below, costal refers to ribs)
pg 31 1B

2. Serratus posterior inferiordepresses ribs.
   pg 32 2B

Question 4

Abdominal Muscles of Expiration
Abdominal aponeurosis

(?Tendinous intersecton)

Answer 4

Tendonous structure that provides an attachment point for many muscles of the abdomen

Linea Alba, White line that runs from xiphoid process the pubic symphysis. Forms a midline structure for muscle attachment. Pg 33

Question 5

Abdominal Muscles of Expiration
Anterolateral,
1.Transversus abdominis

Answer 5

compress abdomen
deepest layer of abdominal muscle
lowers ribs, diaphram, thorasic vertebre
pg 33(yellow)

Question 6

Abdominal Muscles of Expiration
Anterolateral
2. Internal oblique

Answer 6

side
rotates trunk, compresses abdomen
pg33(blue)

Question 7

Abdominal Muscles of Expiration
Anterolateral
3.External oblique

Answer 7

rotates trunk and compresses abdomen
pg 33(green)

Question 8

Abdominal Muscles of Expiration
Anterolateral
4. Rectus abdominis

Answer 8

compresses abdomen
pg 33(orange)

Question 9

Abdominal Muscles of Expiration
Posterior
1. Quadratus lumborum

Answer 9

(illiat crest, lumbar vertebre and rib 12)?
figure on pg 33 of notes

pulls last rib down and supports in abdominal compression

Question 10

Muscles of Upper Limb

Latissimus dorsi

Answer 10

compresses the lower portion of the rib cage wall

triangular muscle
pg 33 notes