Respiratory System Quiz

Which of the following reasons why the human body needs oxygen?

• The body needs oxygen so that we can breathe.

• The body needs oxygen to facilitate the conversion of glucose from the food that we eat to energy.

• The body needs oxygen to help build muscles so that the body can do various extreme activities.

• The body needs oxygen so that the organs of the body can produce more blood that carries the nutrients to all parts of the body.

Which among the following statements is true about these two processes?

• Breathing happens when the body inspires or inhales air through the nose, whereas expiration happens when carbon dioxide is released from the lungs.

• Breathing takes place only when the chest cavity enlarges, while respiration takes place when oxygen is absorbed in the trachea.

• Breathing occurs when oxygen is inhaled into the lungs and carbon dioxide is exhaled through the airways of the respiratory system, whereas respiration occurs when oxygen is diffused into the body cells and carbon dioxide is diffused out at the same time.

• Both processes happen all the time and function similarly because both happen in the lungs of the human body.

Determine the part labeled X in the picture below and determine its function during inspiration or inhalation.

• The part labeled X is called the intercostal muscles, which function to contract during inspiration and protect the lungs from shrinking.

• The part labeled X is called the belly in which moves downward during inhalation to provide more space for air to get into the body.

• The part labeled X is called the pelvic muscle that moves upward or relaxes during inspiration.

• The part labeled X is called the diaphragm, which moves downward during inhalation to bring the oxygen into the lungs.

The parts labeled below are important because they facilitate the flow of air into the lungs. The parts labeled in are known as?

• Trachea

• Larynx

• Bronchioles

• Bronchi

Which statements determine the main function of these structures in the lungs?

• They provide oxygen to the lungs so that they can breathe fresher air.

• They allow the gaseous exchange where oxygen is diffused into the bloodstream and carbon dioxide is removed from the lungs.

• They protect the lungs from inflammation caused by bacteria that come along with the air that humans breathe every day.

• They expand during breathing so that the lungs can get more oxygen.

Why is the nose a crucial part of the respiratory system?

• The nose filters out dust from inhaled air, protecting the lungs, and it also moistens and warms the air.

• The nose absorbs the oxygen from the inhaled air and diffuses it into the capillaries.

• The nose removes the carbon dioxide from the inhaled air, protecting the lungs from suffocation.

• The nose allows gas exchange to take place to speed up the respiration process.

Which statements are true about the trachea?

• It is a tube that removes oxygen from the air.

• It is a tube that allows water and food to enter the body.

• It is a tube that allows air to get into the lungs.

• It has a mucus membrane that traps the bacteria and dust from the air.

Which statements show what happens to the lungs during inspiration or inhalation?

• During inspiration or inhalation, the lungs begin to get filled with oxygen only.

• During inspiration or inhalation, the lungs expand or become bigger.

• During inspiration or inhalation, the lungs relax so that the air can get into the alveoli for absorption.

• During inspiration or inhalation, the lungs move downward, pulling the air into the alveoli for gas exchange.

Which of the following is the result of the collaboration of these two systems?

• During inhalation, the external intercostal muscles located between the ribs contract, causing the ribs to move outward.

• During inhalation, the intercostal muscle located between the ribs relaxes, causing the ribs to move inward.

• During inhalation, the diaphragm contracts, causing the ribs to move inward, pushing the air into the lungs.

• During inhalation, the diaphragm and ribs relax, giving the lungs more space to expand.

To facilitate the delivery of more oxygen and replenish the energy lost, what is the body's automatic response?

• The body shakes and faints.

• The body's breathing rate increases.

• The heart pumps more carbon dioxide out of the body.

• The heart pumps more oxygen out of the body.