respiratory
do gases want to go from high or low concnetrwtion
want to go to low concentration
a blood transfusion can help circulate oxygen
because hemoglobins carry oxygen and helo transporr oxygen around the body
why would the partisl pressure of oxygen be less in the capillaries than arteries
becwuse oxygen wants to go ffrom high to low and gas exchange occurs
describe rhe pathway or oxygen from the atmosphere to the cell including roles of ventilation, hemoglobin, and diffusion in this process
tou breathe in ozygen rich air then in our lungs it diffuses into tour blood, the protein hemoglobin then attacthes to the oxygen and transports it around the body
describe the pathway of an oxygen molecule that enter your nose
wnters your nose, pharynx, larynx, trachea, bronchus, brinchioles, alveoli
what is intercostal
muscles between ribs
what is the function of nostrils
filter warm and moisten incoming air
what is the function of the pharynx
connects nose and mouth
what is the function of larynx
makes vocal sounds
epiglottis function
closes off teachea when swallowing food
trachea function
carries air down to the bronchi
bronchi features
mucus and cilia which filter air, carry air to each lung
bronchioles function
many small branches, carry air deep into the lungs the alveoli
alveoli function
thin walled saca surrounded by blood vessels, exchange o2 and co2
diaphragm function
sheet of muscles rhat never tires, changes volume of the cheat cavity
pleura function
create a vaccum seal around rhe lungs,
how does breathing work
because the pleural membrane creates a vaccum seal around the lungs
what are the two muscle groups that are used to create the movement of air
diaphragm muscles, intercostal muscles
how does the dispgrahm help us breathe
tour diaphragm moves down and tour rib cage moves out. when you breathe out the reverse happens
what gappens during inspiration
diaphragm moves doen, intercostal msucles contract, bigger chest volume (low pressure)
what happens during expiration
diaphragm moves up, intercostal muscles , smaller chest = higher pressure
the anount of dissolved oxygen in a substance varies fue to
temperature, humidity, other favtors
what is rhe four step process of respirsrion?
breathinfg, external respiration, internal respiration, cellular respirstion
what helps rhe alveoli with gas wxchsnge
large surface area
moist surface
thin lining
blood capillaries