ap lab respiratory quiz

what carries blood out of heart to body

arterioles, main is aorta

pulmonary vein vs artery and where they connect

vein= oxygenated blood from lungs to heart (left atrium)

artery= deoxygenated blood from heart (right ventricle) to lungs - lung capillaries

pleura functions

reduce friction with fluid so the lungs will move smoothly. keep lungs expanded via neg pressure, protect and separate lungs

pleura are thin membranes around lungs

carina

ridge of cartilage where trachea splits into right and left bronchi, triggers cough reflex if something touches it

sheep vs human resiratory structures

similar= both have trachea/bronchi/alveoli

sheep lungs more clearly divided into lobes, sheep have tracheal bronchus going directly from trachea to lungs, sheep lungs more elongated

how gas exchange happens and whats involved (3 structures)

diffusion based on pressure diff ( high to low), alveoli,(site) capillaries (vessels), respiratory membrane

neg pressure in lungs during inhalation

happens so air flows in, diaphragm contracts, volume increases

what does diaphragm does to thoracic cavity

changes volume of thoracic cavity which inversely affects pressure

3 structures and what they do during inhalation

diaphragm contracts and increases volume in lungs, lungs expand and pressure decreases, intercostal muscles contract and lift ribs up/out

what side of heart has deoxygenated blood

right

flow of blood

Body → vena cava → right atrium → right ventricle → pulmonary artery → lungs → pulmonary veins → left atrium → left ventricle → aorta → body