Thorax

Question 1

Thoracic cage superiorly is

Answer 1

Bounded by an opening which is attached to the 1st Thoracic rib and a membrane known as SUPRAPLEURA MEMBRANE which is an extension of the ENDOTHORACIC FASCIA.

Question 2

Suprapleura membrane is ______ inch greater than the first Thoracic rib

Answer 2

1

Question 3

Supra pleura Membrane is connected to which cervical vertebrae

Answer 3

7th

Question 4

In the Thoracic dermatomes, the C5-C7 forms the ___

Answer 4

Brachial plexus

Question 5

Dermatomes are

Answer 5

Areas of the skin that contains spinal nerves

Question 6

Cutaneous nerves above the sternal angle is

Answer 6

Supra clavicular nerves

Question 7

Cutaneous nerves below the sternal angle are

Answer 7

Lateral and anterior branches of the Intercoastal nerves

Question 8

Cutaneous nerves in the posterior walls are

Answer 8

Branches of the posterior rami of the Thoracic spinal nerves

Question 9

Intercoastal muscles are divided into

Answer 9

External Intercoastal muscles
Internal Intercoastal muscles
Innermost Intercoastal muscles

Question 10

External Intercoastal muscles are ____

Answer 10

*Positioned downward and forward
*Coming from the lower border of the upper rib to the upper border of the lower rib
* Originating from the rib tubercle at the back to the coastal-chondral junction at the front.
* It is incomplete and deficient at the front
* the remaining portions occupied by the external or anterior Intercoastal membrane.

Question 11

Internal Intercoastal muscle _____

Answer 11

*is positioned downward and backward
*Is coming from the Sternum of the rib at the front to the angle of the rib at the back
*Is incomplete and deficient at the back also( i.e the remainder part is occupied by internal( posterior) Intercoastal membrane.
* From the subcostal groove of the rib above to the upper border of the rib below

Question 12

Innermost Intercoastal muscles ________

Answer 12

• extends from one Intercoastal space to another
• Is connected posteriorly to the endothoracic fascia
• It’s divided into 3 portions.
• Its related to VAN( neurovasculature of the thorax)
• It’s also incomplete
• Originates from the medial border of the coastal groove of the superior rib.

Question 13

VAN stands for

Answer 13

Veins
Artery
Nerve

They lie directly below the ribs

Question 14

Endothoracic fascia ___

Answer 14

Lies between the Thoracic cage and the parietal pleura.
It extends superiorly to the Apex of the pleura where it continues as SUPRA PLEURA membrane
It also extends posteriorly where it forms a thin membrane between the diaphragm and the pleura.

Question 15

VAN is located

Answer 15

Between the internal and the innermost Intercoastal muscles

Question 16

Intercoastal nerves are _____ pairs

Answer 16

12

Question 17

1-6 pairs are in _______
7-11 pairs are ___
12th pair ____

Answer 17

Intercoastal space
Anterior abdominal wall
Subcoastal nerve of the abdomen

Question 18

Branches of Intercoastal nerves include 7 branches including

Answer 18

Lateral cutaneous branch
Anterior cutaneous branch
Muscular branch
Pleural branch
Collateral branch
Peritoneal branch
Rami communicantes

Question 19

There are three Atypical Intercoastal nerves namely____

Answer 19

1st, 2nd and 12th
They do not follow the general pattern as the others

Question 20

The First Intercoastal nerves ___

Answer 20

Has no anterior cutaneous branch. It is connected to the Brachial plexus via the lateral cutaneous branch.

Question 21

Intercoastal nerves are

Answer 21

Mixed nerves

Question 22

Second Intercoastal nerves is

Answer 22

Connected to the medial cutaneous branch by the Brachial plexus through a branch called INTERCOSTOBRACHIAL NERVE

Question 23

For the posterior Intercoastal arteries , the last 9 spaces contains

Answer 23

Thoracic aorta

Question 24

In the posterior Intercoastal arteries, the first two spaces is supplied by the

Answer 24

Superior Intercoastal arteries

Question 25

Superior Intercoastal artery is a branch of ____

Answer 25

Costocervical branch of sub clavian trunk

Question 26

In the anterior Intercoastal arteries, the first 6 spaces is occupied by ____

Answer 26

Internal Thoracic artery

Question 27

In the anterior Intercoastal arteries, the last five spaces are supplied by ___

Answer 27

Musculophrenic arteries

Question 28

In the posterior Intercoastal space, the veins that drains the right side are___

Answer 28

Right Brachiocephalic veins for the first space
Azygos veins for the remaining spaces

Question 29

In the posterior Intercoastal space, the veins that drain from the left side are ____

Answer 29

Left Brachiocephalic veins for the first three spaces
Hemiazygos veins for the remaining spaces

Question 30

In the anterior Intercoastal space, the veins that drain are _____

Answer 30

Musculophrenic veins for the last five spaces
Internal Thoracic veins for the first six spaces.

Question 31

Anterior lymphatic drainage of the Intercoastal space is the

Answer 31

Anterior Intercoastal nodes along the internal artery

Question 32

Posterior lymphatics of the Intercoastal space drains into ______

Answer 32

Posterior Intercoastal node along the posterior mediastinum