Anatomy 1
A sheet of skeletal muscle
Diaphragm
Holds the vocal cords
Larynx
When a substance moves from high to low concentration
diffusion
After air leaves the pharynx it travels to the:
trachea
This controls respiration rate.
Brain/brain stem
Another word for the throat
Pharynx
Closed when a person is swallowing
Epiglottis
Where 7% of CO2 dissolves
Plasma
Air rich in CO2 leaves the alveoli and travels to:
bronchioles and bronchi
This occurs due to the action of the diaphragm and rib muscles.
Ventilation
Immediately after the bronchi
Bronchioles
Where CO2 exits the bloodstream
Alveoli
Where external respiration occurs
Lungs
Oxygenated blood travels from blood to the:
body cells
Occurs when the diaphragm relaxes and lung volume decreases.
expiration
Another name for the voice box
Larynx
Smaller branches inside the lungs
Bronchioles
These have enormous surface area
Body cells use O2 to do:
The volume of the lungs increases and there is low pressure.
Inspiration
Hollow area behind your nose
Nasal cavity
Full of cilia
Nasal cavity
25% of CO2 binds to______.
hemoglobin
The waste product of cellular respiration
CO2
When the diaphragm contracts the thoracic cavity becomes:
larger