Chapter 2 Respiratory System

State the order of the pathway of air into the body.

• Mouth/nose, Bronchi, Bronchioles, Alveoli, Trachea

• Mouth/nose, Trachea, Bronchioles, Bronchi, Alveoli

• Mouth/nose, Trachea, Bronchi, Bronchioles, Alveoli

• Mouth/nose, Trachea, Alveoli, Bronchi, Bronchioles

Where does gaseous exchange take place?

• Trachea

• Bronchi

• Bronchioles

• Alveoli

When you are doing strenuous exercise, your body need

• less oxygen

• more oxygen

• more carbon dioxide

• more lactic acid

Describe the diaphragm.

• A muscular sheet at the base of the chest cavity

• the muscles between the ribs that raise and lower the ribs

• the muscles in the abdominals that support breathing

• the muscles in the lungs that allow for exhalation

Define the term tidal volume

• the maximum amount of air you can breathe out

• the volume of air you inhale with each breath during normal breathing

• the amount of air left in your lungs after breathing out

• the volume of air that you breathe per minute

Define the term minute ventilation

• the maximum amount of air you can breath out

• the volume of air you inhale with each breath during normal breathing

• the amount of air left in your lungs after breathing out

• the volume of air that you breathe per minute

Define the term residual volume

• the maximum amount of air you can breath out

• the volume of air you inhale with each breath during normal breathing

• the amount of air left in your lungs after breathing out

• the volume of air that you breathe per minute

One of the characteristics of the Alveoli is that they are surrounded by capillaries. Suggest an explanation for this.

• this allows a good blood supply which ensures that oxygen can be transferred into the blood and carbon dioxide removed.

• due to the thinness of the walls, diffusion of oxygen and carbon dioxide through alveoli is easy.

• this allows the alveoli to increase in surface area during inhalation.

Suggest what happens to a performer's residual volume as their breathing rate increases.

• Residual volume increases

• Residual volume decreases

• Residual volume stays the same

Suggest two functions of the intercostal muscles during breathing.

• contract to expand the chest cavity by moving the ribs up and out during inspiration

• relax to reduce the chest cavity by allowing the ribs to move downwards and inwards during expiration

• Increases pressure of the lungs

• Decreases pressure in the lungs