Thoracic Wall

Question 1

origin of serratus posterior superior

Answer 1

SP C7 - T3

Question 2

insertion of serratus posterior superior

Answer 2

posterior surface of ribs 2 - 5

Question 3

action of serratus posterior superior

Answer 3

elevate ribs during inhalation

Question 4

innervation of serratus posterior superior

Answer 4

intercostal nerves T1 - T4

Question 5

origin of serratus posterior inferior

Answer 5

SP T12 - L3

Question 6

insertion of serratus posterior inferior

Answer 6

posterior surface of ribs 9 - 12

Question 7

action of serratus posterior inferior

Answer 7

depress ribs during exhalation

Question 8

innervation of serratus posterior inferior

Answer 8

intercostal nerves T9 - T12

Question 9

origin of external intercoastals

Answer 9

inferior border of the rib above

Question 10

insertion of external intercoastals

Answer 10

superior border of the rib below

Question 11

action of external intercoastals

Answer 11

draw the ribs superiorly to assist with inhalation

Question 12

innervation of external intercoastals

Answer 12

thoracic nerves

Question 13

origin of internal intercostals

Answer 13

inferior border of the rib above

Question 14

insertion of internal intercostals

Answer 14

superior border of the rib below

Question 15

action of internal intercostals

Answer 15

draw the ribs inferiorly to assist with exhalation

Question 16

innervation of internal intercostals

Answer 16

thoracic nerves