Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
13 Cards in this Set
- Front
- Back
|
What are the four processes that play a part in respiration?
|
breathing (ventilating), external respiration, gas transport and internal respiration.
|
|
|
What does the nose do?
|
The nose cleans incoming air, warms and moistens the air, and provides for the sense of smell.
|
|
|
What do the sinuses do?
|
The sinuses lighten the head and adjust air quality
|
|
|
What does the pharynx do?
|
The pharynx is the space behind the nose and mouth and provides a passageway for food and air
|
|
|
What does the larynx do?
|
The larynx is an adjustable entrance to the respiratory system that controls the position of the epiglottis and is the source of the voice
|
|
|
What is the trachea?
|
The trachea is the tube that conducts air between the environment and the lungs. It divides into the bronchial tree that conducts air to each lung.
|
|
|
What are the alveoli?
|
The alveoli are the functional units of the respiratory system. These minute thin-walled sacs are where oxygen diffuses from the air across a single-cell-layered eptihelium into the blood. Carbon dioxide produced by the cells diffuses from the blood into the alveolar air to be exhaled.
|
|
|
When the ___ and ___ contract, the volume of the thoracic cavity increases causing the pressure in the lungs to decrease.
|
diaphragm and external intercostal muscles
|
|
|
Inhalation occurs when the air (or gas) pressure in the lungs ______. When the same muscles relax, air (or gas) pressure in the lungs _____ causing expiration.
|
decreases, increases
|
|
|
What is tidal volume?
|
The volume of air inhaled or exhaled during a normal breath
|
|
|
Most oxygen is carried around the body bound to what? What is it called when theyre both together?
|
hemoglobin, oxyhemoglobin
|
|
|
The carbon dioxide produced as the cells use oxygen is removed by the blood in three ways: what are they?
|
dissolved in the blood, carried by hemoglobin, or as a bicarbonate ion. Most carbon dioxide is transported as bicarbonate ion that also serves as a buffer.
|
|
|
Where is the basic rhythm of breathing controlled?
|
breathing center in the medulla
|
