The coronal plane or frontal plane divides the body into what sections?
Front and back.
The transverse or cross-sectional plane divides the body into what sections?
Top and bottom.
The sagittal or medial plane divides the body into what sections?
Left and right.
What is ventilation?
The exchange of oxygen with carbon dioxide in the lungs.
What does the trachea connect?
The larynx to the lungs.
What is surfactant?
A substance that reduces surface tension.
Where is the heart located?
In the mediastinum.
How many lobes does the right lung have?
Three lobes. Superior, middle, and inferior.
How many lobes does the left lung have?
Two lobes. Superior and inferior.
Does the right or left lung have a cardiac notch?
The left lung.
How does gas exchange in the lungs occur?
By diffusion, a passive transport mechanism.
Diffusion:
The passive movement of a substance from an area of a high concentration to an area of low concentration.
Passive transport:
Movement across a cell membrane that does not require energy input.
Tidal volume:
The amount of air breathed in a normal inhalation or exhalation.
What part of the brain controls respiration?
The medulla oblongata.
What does the diaphragm do?
It is a muscle that increases and decreases the volume in the lungs.