Origin, Insertion, And Nerve Of Respiratory Muscles

Question 1

What is the origin, insertion, and nerve of diaphragm

Answer 1

O: xiphoid process of sternum, lower ribs and costal cartilages, lumbar vertebrae

I: central tendon of diaphragm itself

N: phrenic nerve

Question 2

What is the origin, insertion, and nerve of external intercostal muscles

Answer 2

O: lower edge of rib superior to its insertion

I: upper edge of rib inferior to its origin

N: intercostal nerves

Question 3

What is the origin, insertion, and nerve of internal intercostal muscles

Answer 3

O: upper edge of rib inferior to its insertion

I: lower edge of rib superior to its origin, deep to the insertion of the external intercostals

N: intercostal nerves