unit 5 Flashcards
the ribs articulate with the thoracic spine at which types of joints
costotransverse & costovertebral
which bone forms the middle portion of the anterior thoracic wall
sternum
what structure forms the superior end of the sternum
manubrium
what is the most inferior segment of the sternum
xiphoid process
how many pairs of ribs form the human ribcage
12
what is the correct order of the bronchial tree
trachea
primary bronchi
secondary bronchi
tertiary bronchi
bronchioles
alveoli
what type of cartilage composes the trachea & bronchi
hyaline cartilage
what is contained within the lung roots (hilum)
primary bronchi
pulmonary arteries
pulmonary veins
how many primary bronchi are formed at the carina
2
what does the trachea connect
upper respiratory tract to the lungs
what term describes the ridges at which the trachea bifurcates in the primary bronchi
carina
how many lobes does the right lung have
3
what is the outer layer of the pleural sac called
parietal pleura
what structure is located directly posteriorly to the trachea
esophagus
where do the coronary arteries originate
base of the aorta
what is the role of the capillary network in the coronary system
to feed the myocardium with nutrients & oxygen
what separates the left atrium from the left ventricle
bicuspid (mitral) valve
what vessels drain into the coronary sinus
cardiac veins
what two vessels empty deoxygenated blood into the right atrium?
inferior vena cava & superior vena cava
how does oxygenated blood return to the heart from the lungs
through the pulmonary veins
what is the function of the pulmonic valve
to allow blood from the right ventricle to the pulmonary arteries
what is the outermost layer of the heart tissue
pericardium
what are the two branches of the left main coronary artery
circumflex & left anterior descending
what structure prevents backflow of blood in the heart
heart valves
what is the role of the atria in the heart
to collect blood returning to the heart
what structure drains blood from the coronary arteries back into the right atrium
coronary sinus
what is the primary function of the pulmonary trunk
to convey deoxygenated blood to the lungs
from which chamber of the heart does the aorta extend
left ventricle
which artery supplies the left lung with deoxygenated blood
left pulmonary artery
where does oxygenated blood from the lungs enter the heart
left atrium
what portion of the body is drained by the superior vena cava
upper half of the body
what are the two arteries that branch from the brachiocephalic trunk
right subclavian & right common carotid
