Respiratory and Diffusion

19 Questions

What is the main function of the respiratory system?

To exchange gases between the body and the outside air

What is the difference between respiration in the respiratory system and cellular respiration?

Respiration in the respiratory system uses oxygen and releases carbon dioxide, while cellular respiration produces energy by burning glucose

Which process supplies the oxygen and takes away the carbon dioxide in the body?

Gas exchange

What is the initial process of respiration in the respiratory system?

Ventilation

Where does gas exchange take place between blood and air?

Lungs

What is the function of the mucus and hairs in the nasal cavity?

Trap particles and warm the air

What is the role of the epiglottis in the respiratory system?

Prevent choking by closing when food is swallowed

Where does pulmonary gas exchange primarily occur?

Alveoli

What is the function of the cartilage in the bronchi?

Prevent collapse of the bronchi

What is the role of the cilia in the bronchi?

Sweep particles and mucus toward the throat

Where does oxygen diffuse from into body cells?

Peripheral capillaries

What is the main function of arteries in the circulatory system?

Carry oxygen-rich blood throughout the body

Where is carbon dioxide more concentrated in the body?

Cells

What is the primary function of the heart in the circulatory system?

Pump oxygen-rich blood into arteries

What is the primary driving force for diffusion?

Concentration gradient

In facilitated diffusion, solutes move through the cell membrane via:

Carrier proteins

What is the end result of diffusion?

Equilibrium of molecules on both sides of the membrane

What type of transport is facilitated diffusion?

Passive transport

What term describes the difference in concentrations of molecules in two areas?