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Flashcards in Thorax Deck (22)
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During passive expiration...

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

1

During inspiration the diaphragm ?

Descends... Compressing the abdominal viscera

2

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

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

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?

Pump-handle movement

4

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

Bucket-handle movement

Most visible in the inferior costals, the lateral part.

5

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

Suspensory ligaments

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

6

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

Axillary lymph

7

Lymph from medial breast quadrants drains to the ...

Parasternal l.n.

8

Lymph from inferior boob quadrant may pass deeply to ...

Abdominal lymph nodes

9

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

The subcostal nerves

10

Posterior intercostal and subcostal arteries derived from?

Thoracic aorta

11

Internal thoracic and supreme intercostal arteries derived from...

The subclavian artery

12

Superior and lateral thoracic arteries derived from..

Axillary artery

13

Internal thoracic artery divides into?

Superior epigastric and musculophrenic arteries

14

Thoracic cavity 3 compartments

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

15

Pleural sac consists of two plaura...

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

16

Pleural cavity

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

17

Parietal pleura consists of four parts

Costal, cervical, mediastinal, and diaphragmatic parts

18

Lungs function

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

19

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

Superior lobe...
Lingula

20

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

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

21

The root of the lung connects...

The lung with the heart and trachea