Thoracic wall

Question 1

vertebral level of suprasternal notch

Answer 1

T2

Question 2

vertebral level of sternal angle

Answer 2

T4/T5

Question 3

vertebral level of xiphisternal joint

Answer 3

T9

Question 4

vertebral level of costal margin

Answer 4

L3

Question 5

boundries of superior thoraic apertures

Answer 5

post: T1
lateral: 1st rib
ant: superior border of manubrium

Question 6

function of superior thoracic apertures

Answer 6

communication btwn thoracic cavity and neck/upper limbs

Question 7

contents of superior thoracic apertures

Answer 7

trachea
esophagus
vessesls and nerves

Question 8

function of inferior thoracic apertures

Answer 8

communication btwn abdomen and thoracic cavity

Question 9

boundries of thoracic wall and cavity

Answer 9

upper: suprapleural membrane
lower: diaphragm
ant: sternum
post: vertebrae
lateral: ribs

Question 10

what joint and what ribs does anterior posterior movement during respiration happen at

Answer 10

• rotation at costotransverse joint
• upper ribs
• body of syernum moves slightly forward

Question 11

what joint and what ribs does lateral movement during respiration happen at

Answer 11

• gliding at costotransverse joint

- lower ribs

Question 12

what is in the outermost layer of thoracic wall

• innervation
• action
• structure

Answer 12

external intercostals

• intercostal nerves
• elevates ribs
• more membranous towards ant

Question 13

what is in the middle layer of the thoracic wall

• innervation
• action
• structure

Answer 13

internal intercostals
-intercostal nerves
-depresses ribs
-more membranous towards posterior
can be seen from inside and outside of cavity

Question 14

what is in the innermost layer of thoracic wall

• innervation
• action

Answer 14

transversus thoracis

• inercostal nerve
• dperesses upper ribs
  intercostal: intercostal nerves
  subcostal: subcostal nerve (below 12th rib)