Question 1

Respond to the following statements with reference to the five components of respiratory systems listed below. Answers may be used more than once or not at all.
-This is the last component of the human lung that air flows into.

Accepted Answer

Alveoli are the smallest functional units of the lung where oxygen and carbon dioxide exchange occurs. Therefore, it is the last component of the human lung that air flows into before gas exchange occurs.

Question 2

Choose the one most appropriate answer for each.
-Epiglottis

Accepted Answer

The epiglottis is a flaplike structure that points upward allowing air to enter the trachea, but blocks the larynx during swallowing to prevent food or liquid from entering the airway.

Answer: I
 The trachea connects to the lungs via the bronchi, which branch off into smaller air passages called bronchioles.

Answer: A
 The trachea is a flexible windpipe reinforced with cartilage that carries air from the throat to the bronchi and lungs.

Answer: C 
 Hemoglobin is the oxygen-rich form of a respiratory protein found in red blood cells that helps transport oxygen from the lungs to the body tissues.

Answer: J and G
 In addition to being a flaplike structure, the epiglottis is also the throat passage behind the mouth that leads to the next stage of the digestive system, the esophagus.

Answer: L
 The alveoli are microscopically small pockets lined with moist epithelium that function in gas exchange, allowing oxygen to diffuse into the bloodstream and carbon dioxide to diffuse out.

Note: The other answer choices listed do not correctly match the definition of the epiglottis.

Question 3

Respond to the following statements with reference to the five components of respiratory systems listed below. Answers may be used more than once or not at all.
-Another name for voice box.

Accepted Answer

The larynx is another name for the voice box. It is located in the upper part of the respiratory system, between the pharynx and the trachea. The larynx is responsible for producing sound when air is passed over the vocal cords.

Question 4

Which of the following part for: 
-Larynx

Accepted Answer

The larynx contains a pair of vocal cords.

Answer: G
 The larynx is the throat passage behind the mouth.

Answer: J
 The epiglottis is a flaplike structure that points upward allowing air to enter the trachea, but blocks the larynx during swallowing.

Answer: I
 The trachea is connected to the lungs by the larynx.

Answer: A
 The trachea is a flexible windpipe reinforced with cartilage.

Answer: F
 The medulla oblongata is part of the brainstem and controls breathing.

Answer: L
 Alveoli are microscopically small pockets lined with moist epithelium that function in gas exchange.

Note: B, C, E, and K are not correct descriptions of the larynx.

Question 5

Which of the following part for: 
-Intercostal muscles

Accepted Answer

Intercostal muscles raise and lower the ribcage to facilitate breathing.

Answer: B
 Intercostal muscles do not detect carbonic acid or stimulate breathing in dangerous situations. However, chemoreceptors in the arteries detect carbon dioxide levels and signal the brain to stimulate breathing.

Answer: L
 Alveoli are the microscopic pockets lined with moist epithelium that facilitate gas exchange.

Question 6

Respond to the following statements with reference to the five components of respiratory systems listed below. Answers may be used more than once or not at all.
-Gas exchange between the air in the lungs and the blood circulatory system occurs here.

Accepted Answer

Gas exchange between the air in the lungs and the blood circulatory system occurs in the alveoli, which are the small air sacs at the end of the bronchioles.

Question 7

Choose the one most appropriate answer for each.
-Chemoreceptors

Accepted Answer

Chemoreceptors detect changes in carbonic acid levels in the bloodstream and signal the brain to adjust breathing rate and depth accordingly.

Answer: L
 Alveoli are the small, moist pockets in the lungs where gas exchange occurs.

Note: None of the other answer choices are related to chemoreceptors.

Question 8

Choose the one most appropriate answer for each.
-Trachea

Accepted Answer

The trachea is a flexible windpipe that is reinforced with cartilage, which helps to keep it open and prevent it from collapsing.

Answer: J
 The epiglottis is a flap-like structure that sits at the base of the tongue and points upwards, allowing air to enter the trachea but blocking the larynx during swallowing.

Answer: I
 The bronchi are the two branches that connect the trachea to the lungs.

Answer: L
 The alveoli are microscopically small pockets lined with moist epithelium that function in gas exchange, allowing oxygen to diffuse into the bloodstream and carbon dioxide to diffuse out.

Question 9

Choose the one most appropriate answer for each.
-Oxyhemoglobin

Accepted Answer

Oxyhemoglobin is the oxygen-rich form of a respiratory protein.

Answer: L 
 Microscopically small pockets lined with moist epithelium that function in gas exchange are called alveoli.

Answer: A 
 A flexible windpipe reinforced with cartilage is the trachea.

Answer: J 
 A flaplike structure that points upward allowing air to enter trachea, but blocks the larynx during swallowing is the epiglottis.

Answer: I 
 The trachea connects to the lungs.

Answer: K 
 Raising and lowering the ribcage is the action performed by the diaphragm.

Answer: F 
 The part of the brainstem that controls breathing is the medulla oblongata.

Answer: B 
 Detecting carbonic acid in artery walls and signaling the brain to stimulate faster and deeper breathing is the role of chemoreceptors.

Answer: H 
 One inhalation and one exhalation is a respiratory cycle.

Question 10

Which of the following part for: 
-Bronchiole

Accepted Answer

The answer of

Which of the following part for:...

Question 11

Which of the following part for: 
-Pleural membrane

Accepted Answer

The answer of

Which of the following part for:...

Question 12

Choose the one most appropriate answer for each.
-Intercostal muscles

Accepted Answer

Intercostal muscles raise and lower the ribcage to facilitate breathing.

Answer: B
 Intercostal muscles do not detect carbonic acid or stimulate breathing in dangerous situations. However, chemoreceptors in the arteries detect carbon dioxide levels and signal the brain to stimulate breathing.

Answer: L
 Alveoli are the microscopic pockets lined with moist epithelium that facilitate gas exchange.

Question 13

Choose the one most appropriate answer for each.
-Medulla oblongata

Accepted Answer

The medulla oblongata is part of the brainstem and controls breathing.

Answer: B
 The medulla oblongata detects carbonic acid in artery walls and signals the brain to stimulate faster and deeper breathing.

Answer: L
 Microscopically small pockets lined with moist epithelium that function in gas exchange are called alveoli.

Note: None of the other choices correctly match the definition of the medulla oblongata or other respiratory system structures/functions.

Question 14

Which of the following part for: 
-Diaphragm

Accepted Answer

The answer of

Which of the following part for:...

Question 15

Choose the one most appropriate answer for each.
-Sympathetic nerves

Accepted Answer

Sympathetic nerves stimulate faster breathing in dangerous situations, such as during fight or flight response.

Answer: F
 The medulla oblongata is a part of the brainstem that controls breathing, including the rate and depth of breathing.

Answer: J
 The epiglottis is a flap-like structure that points upward, allowing air to enter the trachea but blocking the larynx during swallowing.

Answer: K
 The muscles between the ribs, called intercostal muscles, raise and lower the ribcage during breathing.

Note: None of the other choices (A, B, C, D, G, H, I, L) directly relate to the function of sympathetic nerves in the respiratory system.

Question 16

Respond to the following statements with reference to the five components of respiratory systems listed below. Answers may be used more than once or not at all.
-Air moves from the nasal cavity into this passageway.

Accepted Answer

The pharynx is the passageway that directly follows the nasal cavity in the respiratory system, leading air towards the larynx and trachea.

Question 17

Which of the following part for: 
-Nasal cavity

Accepted Answer

The answer of

Which of the following part for:...

Question 18

Respond to the following statements with reference to the five components of respiratory systems listed below. Answers may be used more than once or not at all. -CO₂ moves from the alveoli to this component during exhalation.

Accepted Answer

During exhalation, CO2 moves from the alveoli into the bronchioles as it is expelled from the lungs.

Question 19

Choose the one most appropriate answer for each.
-Respiratory cycle

Accepted Answer

The respiratory cycle refers to one complete inhalation and exhalation.

Answer: F
 The part of the brainstem that controls breathing is known as the respiratory center.

Answer: L
 Microscopically small pockets lined with moist epithelium that function in gas exchange are called alveoli.

Answer: D
 A pair of vocal cords is located in the larynx, which is part of the respiratory system.

Answer: I
 The trachea, also known as the windpipe, connects to the lungs and is an important part of the respiratory system.

Answer: J
 The flaplike structure that points upward allowing air to enter the trachea but blocks the larynx during swallowing is known as the epiglottis.

Answer: K
 The ribcage raises and lowers during breathing to facilitate the movement of air in and out of the lungs.

Question 20

Which of the following part for: 
-Left lung

Accepted Answer

The answer of

Which of the following part for:...

Quiz 38: Respiration

Respond to the following statements with reference to the five components of respiratory systems listed below. Answers may be used more than once or not at all. -This is the last component of the human lung that air flows into.

Choose the one most appropriate answer for each. -Epiglottis

Respond to the following statements with reference to the five components of respiratory systems listed below. Answers may be used more than once or not at all. -Another name for voice box.

Which of the following part for: -Larynx

Which of the following part for: -Intercostal muscles

Respond to the following statements with reference to the five components of respiratory systems listed below. Answers may be used more than once or not at all. -Gas exchange between the air in the lungs and the blood circulatory system occurs here.

Choose the one most appropriate answer for each. -Chemoreceptors

Choose the one most appropriate answer for each. -Trachea

Choose the one most appropriate answer for each. -Oxyhemoglobin

Which of the following part for: -Bronchiole

Which of the following part for: -Pleural membrane

Choose the one most appropriate answer for each. -Intercostal muscles

Choose the one most appropriate answer for each. -Medulla oblongata

Which of the following part for: -Diaphragm

Choose the one most appropriate answer for each. -Sympathetic nerves

Respond to the following statements with reference to the five components of respiratory systems listed below. Answers may be used more than once or not at all. -Air moves from the nasal cavity into this passageway.

Which of the following part for: -Nasal cavity

Respond to the following statements with reference to the five components of respiratory systems listed below. Answers may be used more than once or not at all. -CO2 moves from the alveoli to this component during exhalation.

Choose the one most appropriate answer for each. -Respiratory cycle

Which of the following part for: -Left lung

Respond to the following statements with reference to the five components of respiratory systems listed below. Answers may be used more than once or not at all. -CO₂ moves from the alveoli to this component during exhalation.