Respiratory System Quiz Flashcards
What is the Respiratory System made up of?
The organ system made up of the nose, mouth, trachea, bronchi, and lungs.
What are the main functions of the Respiratory System?
Provides oxygen for the body and allows carbon dioxide to leave the body.
How many times do we breathe in and out per minute?
On average, 15 times.
How much air does an average person move in and out of the lungs daily?
More than 10,000 liters.
What are the components of the Respiratory System?
Nose, mouth, trachea, bronchi, and lungs.
What happens to air when it enters the Respiratory System?
Air enters through nose/mouth, passes through trachea, bronchi, and bronchioles.
How does oxygen get into the bloodstream?
Oxygen diffuses into bloodstream in lungs.
How does carbon dioxide leave the body?
Carbon dioxide diffuses out of bloodstream, exhaled.
Define Inhalation.
Breathing in.
Define Exhalation.
Breathing out.
How does air enter the Respiratory System?
Through mouth and nose.
What is the pharynx?
Throat; connects mouth/nose to trachea.
What is the trachea?
Windpipe; connects pharynx to bronchi.
What are bronchi?
Airways; branches from trachea to lungs.
What supports the trachea?
Rings of cartilage.
What do epithelial cells produce?
Mucus.
What is the function of cilia?
Move mucus, filter foreign material.
What are pulmonary arteries/veins?
Arteries: carry oxygen-depleted blood to lungs; Veins: carry oxygen-rich blood from lungs.
Define Respiration.
Gas exchange between lungs and bloodstream.
Define Ventilation.
Air movement into/out of lungs.
What is the main purpose of the Respiratory System?
Gas exchange.
How does oxygen enter the bloodstream in the lungs?
By diffusion.
How does Carbon Dioxide leave the blood?
By diffusion.
What do the bronchi branch into?
Alveoli.
How does oxygen enter the bloodstream?
Diffusion through alveoli walls into capillaries.
How is carbon dioxide removed?
Diffusion from bloodstream into alveoli for exhalation.
What surrounds each alveolus?
Network of capillaries.
What happens to oxygen picked up by blood?
Carried to body parts.
How is excess carbon dioxide removed?
Diffuses into blood, carried to lungs, diffused into alveoli air, expelled.
What is the diaphragm and what is the function of it?
Large sheet of muscle underneath the lungs.
Inhale-
Exhale-
Inhale-contract
Exhale-relax
