Thorax 1

Question 1

Fracture of ribs is rare in adult or child

Answer 1

Ans:child ,as they have HIGHLY ELASTIC CHEST WALL

Question 2

Ribs fracture at weakest point located at

Answer 2

Ans:Angle of rib

Question 3

Upper and lower two ribs are protected from fracture

Answer 3

Upper by clavicle
Lower - as they are floating

Question 4

Thorax is seperated from neck by

Answer 4

Suprapleural membrane / sibsons fascia

Question 5

Why infants have purely abdominal respiration

Answer 5

Due to horizontal placed ribs ,by the action of diaphragm

Question 6

Shape of thorax in adult, infants and quadrapeds

Answer 6

Oval, circular<2years,ap >ts diameter

Question 7

Hiccups

Answer 7

Spasmodic involuntary contraction of diaphragm accompanied by closed glottis, gastric irritation, phrenic nerve irritation,uraemia,hysteria

Question 8

Sibsons fascia provides rigidity to

Answer 8

Thoracic inlet

Question 9

Thoracic inlet syndrome

Answer 9

Two structures arch over first rib - the subclavian artery and first thoracic nerve . these structures may be pulled or pressed by cervical rib or by variations in inserting of scalenus anterior
Therefore symptoms may be neural, vascular or both

Question 10

Structures passing through venacava opening

Answer 10

RT phrenic nerve,IVC, lymphatic of liver

Question 11

Left phrenic nerve pierces

Answer 11

Left cupola

Question 12

What is foramen of morgagni

Answer 12

Sup epi artery=space of larrey =b/w slip of xiphoid and 7th costal cartilage slip of diaphragm=foramen is enlarged

Question 13

When a person complains of paraesthesia or abnormal sensations along ulnar border of forearm and wasting of small muscles of hand supplied by segment T1 Vascular changes may also occur

Answer 13

A cervical rib is a rib attached to vertebra at C7 it occurs in about 0.5% of subjects such a rib traction on lower trunk of breakal plexuses which arches over cervical rib