Question 1

In order for inspiration to occur, the volume of the thoracic cavity needs to be increased.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following conditions is necessary for air to enter the lungs during inspiration?

Accepted Answer

A)  The alveolar pressure must be lower than the atmospheric pressure.
B)  The alveolar pressure must be higher than the atmospheric pressure.
C)  The alveolar pressure must be equal to the atmospheric pressure.
D)  The size of the lungs must be decreased.
E)  The diaphragm has to be relaxed.F) A) and B)
G) A) and C)

Question 3

The nasal cavity connects to the pharynx through two openings called the

Accepted Answer

A)  nasal septa
B)  nasal conchae
C)  paranasal sinuses
D)  external nares
E)  internal naresF) A) and B)
G) B) and E)

Question 4

The mucous membrane lining the larynx forms two pairs of folds.

Accepted Answer

A) True 
 B)False

Question 5

Painful or labored breathing is referred to as

Accepted Answer

A)  rhinitis
B)  apnea
C)  dyspnea
D)  tachypnea
E)  epistaxisF) C) and D)
G) C) and E)

Question 6

During inspiration, the diaphragm contracts and flattens leading to a volume increase and pressure decrease in the thoracic cavity. Expiration involves the reverse process in which the diaphragm relaxes leading to a volume decrease and pressure increase in the thoracic cavity.

Accepted Answer

A) True 
 B)False

Question 7

The breathing rate is controlled by the respiratory center that consists of a group of neurons located in the

Accepted Answer

A)  cerebellum
B)  medulla oblongata and pons
C)  midbrain and hypothalamus
D)  cerebrum
E)  cerebellum and cerebrumF) A) and E)
G) A) and B)

Question 8

Which of the labeled steps in the diagrams involve contraction the diaphragm?

Accepted Answer

A)  A only
B)  B only
C)  C only
D)  A and B
E)  A and CF) A) and B)
G) None of the above

Question 9

Nerve impulses travel from the active dorsal respiratory group of the respiratory center to the diaphragm via the

Accepted Answer

A)  vagus nerve
B)  phrenic nerve
C)  thoracic nerve
D)  intercostal nerves
E)  radial nerveF) A) and D)
G) A) and C)

Question 10

External respiration is another name for breathing.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following regions of the bronchial tree divides to form multiple alveolar ducts?

Accepted Answer

A)  secondary bronchioles
B)  respiratory bronchioles
C)  tertiary bronchioles
D)  terminal bronchioles
E)  alveolar sacsF) B) and D)
G) All of the above

Question 12

Rhinitis is the scientific name for a "nose job."

Accepted Answer

A) True 
 B)False

Question 13

Most oxygen in the blood is transported as

Accepted Answer

A)  deoxyhemoglobin
B)  gas dissolved in plasma
C)  oxyhemoglobin
D)  carboxyhemoglobin
E)  carbaminohemoglobinF) B) and D)
G) All of the above

Question 14

Which of the following is NOT a structure associated with the lungs?

Accepted Answer

A)  visceral pleura
B)  parietal pleura
C)  cardiac notch
D)  endocardium
E)  oblique fissureF) B) and E)
G) B) and D)

Question 15

All of the following decrease the rate of gas exchange during external respiration EXCEPT

Accepted Answer

A)  emphysema
B)  increased alveolar PO2
C)  increased altitude
D)  pneumonia
E)  increased alveolar PCO2F) B) and E)
G) C) and D)

Question 16

Under resting conditions, the basic rhythm of breathing is controlled by the

Accepted Answer

A)  midbrain
B)  medulla oblongata
C)  hypothalamus
D)  pontine respiratory groupE) C) and D)
F) A) and D)

Question 17

The amount of air left in the lungs after a normal expiration, labeled D in the spirogram, is called the

Accepted Answer

A)  inspiratory capacity
B)  vital capacity
C)  total lung capacity
D)  functional residual capacity
E)  minute volume of respirationF) B) and E)
G) A) and B)

Question 18

Which of the following is NOT part of the respiratory membrane?

Accepted Answer

A)  alveolar squamous epithelial cells
B)  basement membrane of alveolar cells
C)  thin layer of smooth muscle
D)  capillary basement membrane
E)  capillary endothelial cellsF) C) and D)
G) A) and E)

Question 19

The total lung capacity equals

Accepted Answer

A)  TV + IRV + ERV + RV
B)  IRV + ERV + RV + MV
C)  TV + IRV
D)  FRC + ERV + RV
E)  TV + ERV + IRVF) C) and D)
G) A) and D)

Question 20

List the sequence of passageways that inhaled air follows as it moves through the conducting zone of the respiratory system.

Accepted Answer

Nose, nasal cavity, ...

Exam 18: The Respiratory System

Nerve impulses travel from the active dorsal respiratory group of the respiratory center to the diaphragm via the

Correct AnswerverifiedShow Answer

The nasal cavity connects to the pharynx through two openings called the

Correct AnswerverifiedShow Answer

Painful or labored breathing is referred to as

Correct AnswerverifiedShow Answer

Which of the following conditions is necessary for air to enter the lungs during inspiration?

Correct AnswerverifiedShow Answer

During inspiration, the diaphragm contracts and flattens leading to a volume increase and pressure decrease in the thoracic cavity. Expiration involves the reverse process in which the diaphragm relaxes leading to a volume decrease and pressure increase in the thoracic cavity.

Correct AnswerverifiedShow Answer

Most oxygen in the blood is transported as

Correct AnswerverifiedShow Answer

Which of the following is NOT a structure associated with the lungs?

Correct AnswerverifiedShow Answer

All of the following decrease the rate of gas exchange during external respiration EXCEPT

Correct AnswerverifiedShow Answer

Which of the labeled steps in the diagrams involve contraction the diaphragm?

Correct AnswerverifiedShow Answer

In order for inspiration to occur, the volume of the thoracic cavity needs to be increased.

Correct AnswerverifiedShow Answer

The breathing rate is controlled by the respiratory center that consists of a group of neurons located in the

Correct AnswerverifiedShow Answer

The mucous membrane lining the larynx forms two pairs of folds.

Correct AnswerverifiedShow Answer

Which of the following regions of the bronchial tree divides to form multiple alveolar ducts?

Correct AnswerverifiedShow Answer

The amount of air left in the lungs after a normal expiration, labeled D in the spirogram, is called the

Correct AnswerverifiedShow Answer

Rhinitis is the scientific name for a "nose job."

Correct AnswerverifiedShow Answer

Under resting conditions, the basic rhythm of breathing is controlled by the

Correct AnswerverifiedShow Answer

Which of the following is NOT part of the respiratory membrane?

Correct AnswerverifiedShow Answer

The total lung capacity equals

Correct AnswerverifiedShow Answer

External respiration is another name for breathing.

Correct AnswerverifiedShow Answer

List the sequence of passageways that inhaled air follows as it moves through the conducting zone of the respiratory system.

Correct AnswerverifiedNose, nasal cavity, ...View AnswerShow Answer

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Nose, nasal cavity, ...
View Answer