4D - Body Systems Flashcards
Respiratory system
Nostril
openings for air to enter the nose
turbunate bones
regulate airflow
humidify air
nasal passage
warms, cleans, and moistens air
Pharynx
throat passage for food and air
Epiglottis
flap blocking food from entering the windpipe
Glottis
opening between vocal cords to allow for airflow
Larynx
voice box just above the trachea that produces sounds
trachea
your windpipe
carries air to lungs
Bronchi
branches that split off from trachea directing air to lungs
Bronchioles
branches leading to leaves
bring air to the alveoli or aveolar sacs
Aveoli
Group of aveolar sacs that do gas exchange
external respiraton
Lung
organs that handle breathing and gas exchange
Diaphragm
muscle that helps make room for lungs to expand and contract during breathing
Intercostal muscles
move ribs up and out to let air in, and move them down and in to exhale the air out
Inspiratory reserve volume
The extra amount of air you can inhale after taking a normal breath.
Tidal volume
regular breath
Expiratory reserve volume
The extra amount of air you can exhale after a normal breath out.
residual volime
air you cannot breathe out or your lungs will collapse on themselves
Vital capacity
air that is inhaled and exhaled
excludes residual volume
Inspiratory capacity
The total amount of air you can inhale after a normal exhale (this includes the tidal volume + inspiratory reserve volume).
functional residual capacity
The total amount of air left in your lungs after a normal breath out (this includes the expiratory reserve volume + residual volume).
Internal respiration
Happens in body cells. Oxygen goes from blood to cells, and carbon dioxide goes from cells to blood. oxygen is taken in from the blood and carbon dioxide is released.
happens in body cells
External respiration
Happens in the lungs. Oxygen goes from air to blood, and carbon dioxide goes from blood to air.
Approx 30% of the oxygen transfer happens by
fascilitated diffusion. no energy required
in order, which two ways is oxygen carried in the blood
- redblood cells by hemoglobin
- o2 dissolves into blood cells
in order, which three ways is carbon dioxide carried in the blood
- bicarbonate ion
- abt 20% is caarried by carboxy heamogloben
- CO2 dissolves into the bloodstream