Thorax 4 Flashcards
(50 cards)
What are vital organs of respiration?
lungs
main function of the lungs is to ______ the blood by bringing inspired air into close relation with the venous blood in the pulmonary capillaries.
oxygenate
Although cadaveric lungs may be shrunken, firm or hard to the touch, and discolored in appearance, healthy lungs in living people are normally light, soft, and spongy, and fully occupy the _______
pulmonary cavities.
Lungs are also elastic and _____ to approximately one third their size when the thoracic cavity is opened.
recoil
The lungs are separated from each other by the ___, to which they are attached by the roots of the lungs - that is, the bronchi (and associated bronchial vessels), pulmonary arteries, superior and inferior pulmonary veins, the pulmonary plexuses of nerves (sympathetic, parasympathetic, and visceral afferent fibers), and lymphatic vessels.
mediastinum
If the root is sectioned before the (medial to) branching of the main (primary) bronchus and pulmonary artery, its general arrangement is:
________, superiormost on left (the superior lobar bronchus may be superiormost on the right).
Pulmonary artery
After pulmonary artery in the arrangement of the lung:
Superior and inferior _____, anteriormost and inferiormost, respectively.
pulmonary veins
After pulmonary arteries and pulmonary veins, general arrangement of the lung:
____, against and approximately in the middle of the posterior boundary, with the bronchial vessels immediately surrounding.
Bronchus
What artery carries deoxygenated blood?
pulmonary artery
In the _____ veins, deoxygenated blood is coming from the blood tissue.
Bronchial veins
Medial to the hilum, the root is enclosed within the area of continuity between the parietal and the visceral layers of _____ - the pleural sleeve, or mesopneumonium (mesentery of the lung).
Pleura
The ______ of the lung is a wedge-shaped area of the medial surface of each lung, the point at which the structures forming the root enter and leave the lung
hilum
Visceral pleura becomes the _______.
parietal pleura
_______ = pleural sleeve in the area. Should be folding which is called the pleural sleeve. Hilum of the lung
Pleural fold
The _____ and ______ fissures divide the lungs into lobes.
horizontal, oblique
The right lung has how many lobes?
3
The left lung has how many lobes?
2
The right lung is larger and heavier than the left, but it is shorter and wider because the right dome of the diaphragm is higher and the heart and pericardium bulge more to the ______.
left
The anterior border of the right lung is relatively _____, whereas this border of the left lung has a deep cardiac notch, an indentation consequent to the deviation of the apex of the heart to the left side.
straight
The deep cardiac ______ primarily indents the anteroinferior aspect of the superior lobe of the left lung.
notch
This indentation often creates a thin, tongue-like process of the superior lobe, the ______, which extends below the cardiac notch and slides in and out of the costomediastinal recess during inspiration and expiration.
lingula
Lingula is NOT part of inferior lobe, it is a part of the _____ lobe.
superior
Each lung has an ___, the blunt superior end of the lung ascending above the level of the 1st rib into the root of the neck that is covered by cervical pleura.
apex
Each lung has three surfaces:
costal, mediastinal, and diaphragmatic