Thorax

Question 0

During inspiration the diaphragm ?

Answer 0

Descends… Compressing the abdominal viscera

Question 1

During passive expiration…

Answer 1

The diaphragm, intercostal muscles, etc relax…decreasing intrathoracic volume and increasing intrathoracic pressure, expelling air from the lungs…the stretched elastic tissue of the lungs recoils, expelling most of the air

Question 2

During expiration, the vertical diameters return to neutral position as the elastic recoil of the lungs produces …

Answer 2

Subatmospheric pressure in the pleural cavities, between the lungs and the thoracic wall.

Question 3

Movement of the upper ribs at the costovertebral joints, about an axis passing through the neck of the ribs, causes the anterior ends of ribs and sternum, especially it’s inferior end, to rise…this is called?

Answer 3

Pump-handle movement

Question 4

The increase in the transverse dimension of the thorax when the intercostal muscles are contracted is called ?

Answer 4

Bucket-handle movement

Most visible in the inferior costals, the lateral part.

Question 5

Mammary glands are firmly attached to the dermis of the overlying skin by the…

Answer 5

Suspensory ligaments

These ligs are particularly well developed in the superior part of breast

Question 6

Most lymph (>75% ), especially from the lateral quadrants of the breast, drains into

Answer 6

Axillary lymph

Question 7

Lymph from medial breast quadrants drains to the …

Answer 7

Parasternal l.n.

Question 8

Lymph from inferior boob quadrant may pass deeply to …

Answer 8

Abdominal lymph nodes

Question 9

Anterior rami of t12 nerves, inferior to the twelfth ribs, form….

Answer 9

The subcostal nerves

Question 10

Posterior intercostal and subcostal arteries derived from?

Answer 10

Thoracic aorta

Question 11

Internal thoracic and supreme intercostal arteries derived from…

Answer 11

The subclavian artery

Question 12

Superior and lateral thoracic arteries derived from..

Answer 12

Axillary artery

Question 13

Internal thoracic artery divides into?

Answer 13

Superior epigastric and musculophrenic arteries

Question 14

Thoracic cavity 3 compartments

Answer 14

Two pulmonary cavities, and one central mediastinum( contains heart, vessels, esophagus, thymus, trachea etc)

Question 15

Pleural sac consists of two plaura…

Answer 15

Visceral- covers lungs and adherents to all its surfaces

Parietal pleura- lines the pulmonary cavities, adhering to the thoracic wall, the mediastinum, and the diaphragm

Question 16

Pleural cavity

Answer 16

The potential space between the two pleura- contains serous pleural fluid

Question 17

Parietal pleura consists of four parts

Answer 17

Costal, cervical, mediastinal, and diaphragmatic parts

Question 18

Lungs function

Answer 18

Oxygenate blood by bringing inspired air into close relation with the venous blood ini the pulmonary capillaries

They are elastic and recoil to 1/3 of their size

Question 19

The cardiac notch primarily indents the anteroinferior aspect of the _____ lobe of the left lung, creating a tongue like process called

Answer 19

Superior lobe…

Lingula

Question 20

Three lobes? Two fissures? Three surfaces ? Three borders? Of lungs

Answer 20

Superior, middle, inferior lobes( right lung)
Transverse and oblique fissure(right lung)
Costal, mediastinal, and diaphragmatic surfaces
Anterior, inferior, and posterior borders

Question 21

The root of the lung connects…

Answer 21

The lung with the heart and trachea