Terms in this set (28)
The mechanical process of moving air into and out of the lungs; also called ventilation or inhalation and exhalation
The amount of air that remains in the lungs after a person exhales as forcefully as he or she can.
total lung capacity
The amount of air the lungs can hold after taking as deep a breath as possible (the sum of vital capacity and residual volume).
The total amount of air that a person can exhale after taking as deep a breath as possible.
Diaphragm contracts and moves down, Ribs/Intercostal muscles contract and move up and out As the volume inside the lungs increases, air pressure inside drops, and new air rushes in.
Gas Exchange in the Lungs
Oxygen passes into the bloodstream from the alveoli, waste carbon dioxide passes into the alveoli from the blood stream
Diagram of the Respiratory System
Asthma , Emphysema, SARS
Functions of the Respiratory System
modify properties of air
direct flow of air
speech / sounds
process of using oxygen and releasing carbon dioxide and water
use of oxygen by cells to release energy stored in food
group of organs that take in oxygen and get rid of carbon dioxide
main passage into and out of the respiratory system
connects the nasal passages to the trachea
tube guarded by the larynx; directs air to the bronchi and lungs
tube that connects the trachea to the lungs; directs air to the bronchioles
smaller branches of bronchi; directs air to the alveoli
These are tiny sacs at the ends of the bronchioles in the lungs through which the exchange of oxygen and carbon dioxide takes place; sends oxygen to the blood and receives carbon dioxide from the blood
Tiny hairlike extensions of cells that line the respiratory tract. They move in a wave-like fashion to help eliminate dust and germs from the body.
Diaphragm relaxes and moves up, Ribs/Intercostal muscles relax and move down and in. As the volume inside the lungs decreases, air pressure inside increases, and old air is pushed out.
Parts of the Respiratory System
nasal passages, pharynx, larynx, trachea, bronchi, lungs, bronchioles, alveoli, diaphragm
Place where air is filtered, warmed and moistened by mucus and hairs.
place where sound is produced by air vibrations over vocal cords
directs air to the trachea and food to the esophagus
Receives oxygen from the alveoli and returns carbon dioxide to the alveoli
reason for inhalation
the volume of the chest cavity increases, pressure decreases and air rushes in
reason for exhalation
the volume of the chest cavity decreases and pressure increases and air rushes out.
The process by which the cells in the olfactory membrane react to certain chemicals and send a message to the brain by way of the olfactory nerve. The brain decodes the message.
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