respiratory + cardiovascular system Flashcards
what is the respiratory pathway?
nose, pharynx, larynx, trachea, bronchi, bronchioles, alveoli
how does ventilation work?
through mechanics of inhalation and exhalation
what happens when you inhale?
thoracic cavity pressure = the atmospheric pressure, volume of thoracic cavity increases, diaphragm contracts and flattens
what happens when you exhale?
thoracic cavity pressure > atmospheric pressure, volume of thoracic cavity decreases, diaphragm is relaxed and dome shaped
volume and pressure are…
inversely related
when we force exhalation and inhalation, what do we use?
diaphragm and inercostal muscles
systemic respiration
the picking up and delivering of oxygen to cells
cellular respiration
a metabolic pathway, the action cells undergo after oxygen being delivered by systemic respiration, produces ATP
how do alveoli and capillaries work together?
once the the oyxgen reaches the alveoli, surrounded by capillaries, the oxygen will diffuse down into the capillaries through the epithelial tissue, to then travel to the heart. carbon dioxide will diffuse the opposite way, to be exhaled out of the body.
arteries
move blood away from the heart, thicker walls with muscle tissue,
veins
move blood towards the heart, thinner walls, keep blood flowing in one direction using valves
capillaries
smallest blood vessel, cell walls are one cell thick, red blood cells are in single file line,
blood pressure
force of the blood pushing against your arteries
diastolic pressure
pressure within the arteries between heartbeats
systolic pressure
pressure in the arteries during each heart beat
