Chapter 13: Respiratory System

Select all that apply. Which of the following is/are function(s) of the paranasal sinuses?

• Decrease weight of the skull

• Increase weight of the skull

• Decrease resonance of voice

• Warm and humidify exhaled air

Select all that apply. Which factors influence the sound produced by the vocal cords?

• Tension of vocal cords

• Amount of air passing over vocal cords

• Length of vocal cords

• Thickness of vocal cords

What is the function of the C-shaped rings of cartilage in the trachea?

• hold open the trachea

• prevent food from entering trachea

• make voice

• help gas exchange in the trachea

What are the main characteristics of alveoli?

• Main respiratory structures

• Thin-walled "air sacs"

• Actual sites of gas exchange

• Covered/surrounded by capillaries

What are the characteristics of lungs?

• Two large organs in the thoracic cavity

• Protected by the ribs

• Covered with serous membranes

Which lung is larger, the right or the left?

• Right lung

• Left lung

Which gas is transported to the body cells during gas transport?

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What is pulmonary ventilation?

• moving gases through the body

• breathing in and out

• diffusion of gases in the lungs

• when carbon monoxide is transported instead of oxygen

According to Boyle's Law, if the volume of a closed container is decreased, pressure will ___?

• increase

• decrease

• remain the same

What occurs in the lungs during external respiration?

• A) Oxygen moves from blood to alveoli

• B) Oxygen moves from alveoli to blood

• C) Carbon dioxide moves from alveoli to blood

• D) Carbon dioxide moves from blood to alveoli.