Chapter 11 (The Muscular System IV)

Question 1

Muscles of the Thorax that Assist in Breathing

Answer 1

Respiratory muscles alter the size of the thoracic cavity which affects the pressure in the lungs, and that determines whether we inhale or exhale

Question 2

What’s the most important respiratory muscle ?

Answer 2

The diaphragm

Question 3

Other respiratory muscles include

Answer 3

The external and internal intercostal muscles

A number of accessory muscles useful in forced breathing.

Question 4

Muscles of the abdomen

Answer 4

Protect the viscera and move the vertebral column

Question 5

The Anterolateral Abdominal wall includes the

Answer 5

External oblique
Internal oblique,
Transversus abdominis

Question 6

The Anterolateral Abdominal wall muscles form

Answer 6

Three protective layers around the abdomen.

Question 7

The muscle fascicles of each layer

Answer 7

Protect the abdominal viscera by extending in different directions

Question 8

Rectus Sheaths

Answer 8

Encloses the rectus abdominis muscles
Formed by the aponeuroses of the External oblique, Internal oblique, Transversus abdominis
Form the Linea Alba

Question 9

Linea Alba

Answer 9

A connective tissue band extending from the xiphoid process to the pubic symphysis