Question 1

Which structure is called the windpipe and is supported by rings of cartilage?

Accepted Answer

A) Bronchus 
B) Alveolus 
C) Pharynx 
D) Trachea 
A) Bronchus 
B) Alveolus 
C) Pharynx 
D) Trachea

Question 2

Which of the following represents a correct anatomical sequence?

Accepted Answer

A) Larynx,laryngopharynx,trachea 
B) Oropharynx,laryngopharynx,larynx 
C) Larynx,pharynx,bronchi 
D) Voicebox,windpipe,alveoli 
A) Larynx,laryngopharynx,trachea 
B) Oropharynx,laryngopharynx,larynx 
C) Larynx,pharynx,bronchi 
D) Voicebox,windpipe,alveoli

Question 3

"Clubbing" of the fingers is a response to

Accepted Answer

A) chronic hypoxemia. 
B) CO₂ retention and acidosis. 
C) acute hyperventilation in response to metabolic acidosis. 
D) chronic dry hacking cough. 
A) chronic hypoxemia. 
B) CO₂ retention and acidosis. 
C) acute hyperventilation in response to metabolic acidosis. 
D) chronic dry hacking cough.

Question 4

The epiglottis

Accepted Answer

A) is innervated by the phrenic nerve. 
B) prevents air from entering the esophagus. 
C) prevents food from entering the trachea. 
D) is the Adam's apple. 
A) is innervated by the phrenic nerve. 
B) prevents air from entering the esophagus. 
C) prevents food from entering the trachea. 
D) is the Adam's apple.

Question 5

Kussmaul respirations

Accepted Answer

A) cause hypoxemia. 
B) increase PCO₂. 
C) refer to an acidosis-induced increased respiratory activity. 
D) are caused by a decrease in the plasma [H+]. 
A) cause hypoxemia. 
B) increase PCO₂. 
C) refer to an acidosis-induced increased respiratory activity. 
D) are caused by a decrease in the plasma [H+].

Question 6

Atelectasis

Accepted Answer

A) decreases the surface area for gas exchange. 
B) causes pneumothorax. 
C) causes acute respiratory obstruction. 
D) is best treated with antibiotics. 
A) decreases the surface area for gas exchange. 
B) causes pneumothorax. 
C) causes acute respiratory obstruction. 
D) is best treated with antibiotics.

Question 7

What is the effect of curare?

Accepted Answer

A) Depresses the inspiratory neurons in the medulla oblongata 
B) Changes the shape of the hemoglobin so that it cannot bind to oxygen 
C) Interferes with the activation of the diaphragm and the intercostal muscles by their motor nerves 
D) Inactivates acetylcholinesterase 
A) Depresses the inspiratory neurons in the medulla oblongata 
B) Changes the shape of the hemoglobin so that it cannot bind to oxygen 
C) Interferes with the activation of the diaphragm and the intercostal muscles by their motor nerves 
D) Inactivates acetylcholinesterase

Question 8

Hyperventilation is most apt to induce

Accepted Answer

A) alkalosis. 
B) hypoxemia. 
C) a decline in blood pH. 
D) metabolic acidosis. 
A) alkalosis. 
B) hypoxemia. 
C) a decline in blood pH. 
D) metabolic acidosis.

Question 9

Which of the following is most related to the relaxation of the diaphragm and the intercostal muscles?

Accepted Answer

A) Results from the firing of the inspiratory neurons 
B) Caused by the firing of the phrenic and intercostal nerves 
C) Decreased thoracic volume 
D) Causes air to move into the lungs 
A) Results from the firing of the inspiratory neurons 
B) Caused by the firing of the phrenic and intercostal nerves 
C) Decreased thoracic volume 
D) Causes air to move into the lungs

Question 10

The trachea

Accepted Answer

A) contains C-shaped cartilaginous rings. 
B) encircles the pulmonary artery,where gas exchange occurs. 
C) is lined with surfactant-secreting cells. 
D) is located within the pleural cavity. 
A) contains C-shaped cartilaginous rings. 
B) encircles the pulmonary artery,where gas exchange occurs. 
C) is lined with surfactant-secreting cells. 
D) is located within the pleural cavity.

Question 11

Which of the following structures controls respirations?

Accepted Answer

A) Medulla oblongata 
B) Basal ganglia 
C) Postcentral gyrus 
D) Limbic system 
A) Medulla oblongata 
B) Basal ganglia 
C) Postcentral gyrus 
D) Limbic system

Question 12

The phrenic nerve fires.Which event occurs next?

Accepted Answer

A) The inspiratory neurons fire. 
B) The diaphragm contracts. 
C) Air moves into the lungs. 
D) Thoracic volume decreases. 
A) The inspiratory neurons fire. 
B) The diaphragm contracts. 
C) Air moves into the lungs. 
D) Thoracic volume decreases.

Question 13

Inspiratory and expiratory neurons

Accepted Answer

A) are located within the respiratory control center in the brain stem. 
B) are sensitive primarily to PO₂. 
C) line the breathing tubes,especially the bronchioles. 
D) All of the above are true. 
A) are located within the respiratory control center in the brain stem. 
B) are sensitive primarily to PO₂. 
C) line the breathing tubes,especially the bronchioles. 
D) All of the above are true.

Question 14

The central chemoreceptors are primarily sensitive to blood levels of

Accepted Answer

A) oxygen. 
B) carbon dioxide and [H+]. 
C) sodium. 
D) potassium. 
A) oxygen. 
B) carbon dioxide and [H+]. 
C) sodium. 
D) potassium.

Question 15

The lungs contain the

Accepted Answer

A) inspiratory and expiratory neurons. 
B) structures of the bronchial tree. 
C) pharynx,larynx,and trachea. 
D) pleural membranes. 
A) inspiratory and expiratory neurons. 
B) structures of the bronchial tree. 
C) pharynx,larynx,and trachea. 
D) pleural membranes.

Question 16

The respiratory tract

Accepted Answer

A) includes the mouth,pharynx,trachea,and esophagus. 
B) contains conductance,resistance,and exchange structures. 
C) is lined with serous pleural membranes and cilia. 
D) begins with the nose and mouth and ends at the bronchioles. 
A) includes the mouth,pharynx,trachea,and esophagus. 
B) contains conductance,resistance,and exchange structures. 
C) is lined with serous pleural membranes and cilia. 
D) begins with the nose and mouth and ends at the bronchioles.

Question 17

Hypoventilation is most apt to

Accepted Answer

A) increase blood pH. 
B) induce acidosis. 
C) cause ketosis. 
D) cause hyperglycemia. 
A) increase blood pH. 
B) induce acidosis. 
C) cause ketosis. 
D) cause hyperglycemia.

Question 18

Which substance greatly reduces the attractive forces among the water molecules lining the alveoli?

Accepted Answer

A) Lysozyme 
B) Converting enzyme 
C) Mucus 
D) Surfactant 
A) Lysozyme 
B) Converting enzyme 
C) Mucus 
D) Surfactant

Question 19

The Adam's apple is

Accepted Answer

A) cartilage. 
B) the epiglottis. 
C) the primary site of gas exchange. 
D) the pharynx. 
A) cartilage. 
B) the epiglottis. 
C) the primary site of gas exchange. 
D) the pharynx.

Question 20

Surfactants

Accepted Answer

A) prevent collapse of the alveoli. 
B) induce anaphylaxis. 
C) cause upper respiratory obstruction. 
D) decrease thoracic volume. 
A) prevent collapse of the alveoli. 
B) induce anaphylaxis. 
C) cause upper respiratory obstruction. 
D) decrease thoracic volume.

Exam 22: Respiratory System

Which structure is called the windpipe and is supported by rings of cartilage?

Which of the following represents a correct anatomical sequence?

"Clubbing" of the fingers is a response to

The epiglottis

Kussmaul respirations

Atelectasis

What is the effect of curare?

Hyperventilation is most apt to induce

Which of the following is most related to the relaxation of the diaphragm and the intercostal muscles?

The trachea

Which of the following structures controls respirations?

The phrenic nerve fires.Which event occurs next?

Inspiratory and expiratory neurons

The central chemoreceptors are primarily sensitive to blood levels of

The lungs contain the

The respiratory tract

Hypoventilation is most apt to

Which substance greatly reduces the attractive forces among the water molecules lining the alveoli?

The Adam's apple is

Surfactants

Introduction to the Human Body

Basic Chemistry

Cells

Cell Metabolism

Microbiology Basics

Tissues and Membranes

Integumentary System and Body Temperature

Skeletal System

Muscular System

Nervous System: Nervous Tissue and Brain

Nervous System: Spinal Cord and Peripheral Nerves

Autonomic Nervous System

Sensory System

Endocrine System

Blood

Anatomy of the Heart

Function of the Heart

Anatomy of the Blood Vessels and Special Circulations

Functions of the Blood Vessels

Lymphatic System

Immune System

Digestive System

Urinary System

Water, Electrolyte, and Acidbase Balance

Reproductive Systems

Human Development and Heredity

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