Physiology Final Exam Study Guide – UF |
Comprehensive | Questions & Exam Review
|Graded A+|100% Verified
Which of the following specifically describes the movement of air into and out of
the lungs? Correct Answer:
Pulmonary ventilation
All EXCEPT which of the following structures belong to the conducting zone of
the respiratory tract?
Correct Answer:
The alveoli
What are the smallest (and most distal) structures that remain a component of
the conducting zone in the respiratory tract?
Correct Answer:
terminal bronchioles
What is the function of ciliated cells in the conducting zone?
Correct Answer:
propel mucus containing trapped particles toward the glottis
What structure is the region of the lungs where the majority of gas exchange
occurs?
Correct Answer:
alveolus
Due to the negative intrapleural pressure, the pleural sac must remain airtight. If
the pleural sac were broken, as in a piercing wound, which of the following
would happen?
Correct Answer:
The lungs would collapse.
,The difference between what two pressures drives air into and out of the lungs?
Correct Answer:
atmospheric : intra-alveolar
Which of the following occurs when intra-alveolar pressure exceeds
atmospheric pressure?
Correct Answer:
air moves out of the lung
Which of the following is a measure of the distending force across the lungs?
Correct Answer:
transpulmonary pressure
What is the volume of air present in the lungs when the lungs are at rest (in
between breaths)?
Correct Answer:
functional residual capacity
What does contraction of the diaphragm cause?
Correct Answer:
increase in the volume of the thoracic cavity and therefore a decrease in intra-
alveolar pressure
The muscles of respiration are ________.
Correct Answer:
skeletal muscle innervated by the somatic nervous system
The change in lung volume (ΔV) that results from a given change in
transpulmonary pressure is known as which of the following?
Correct Answer:
Lung compliance
What is the forced expiratory volume?
Correct Answer:
,A measure of the percentage of the forced vital capacity that can be exhaled
within a certain length of time
What is the correct formula for vital capacity (VC)?
Correct Answer:
VC = VT + IRV + ERV
The tidal volume and inspiratory reserve volume together make up which of the
following?.
Correct Answer:
Inspiratory capacity
What measurement cannot be determined by a spirometer?
Correct Answer:
residual volume
Approximately how much oxygen does a human body consume per minute?
Correct Answer:
250 mL
Movement of oxygen and carbon dioxide between alveoli and blood occurs by
what process?
Correct Answer:
simple diffusion
What is the percentage of oxygen contained in air?
Correct Answer:
Approximately 21%
What is the most abundant gas in the air that we breathe?
Correct Answer:
nitrogen
At sea level, what is the normal partial pressure of carbon dioxide in pulmonary
arteries?
Correct Answer:
, 46 mm Hg
During intense exercise, the metabolic activity of muscle causes a ________ in
the partial pressure of oxygen in the tissue, ________ the movement of oxygen
into the tissue.
Correct Answer:
decrease : facilitating
Mixed venous blood samples can be taken from which of the following blood
vessels?
Correct Answer:
pulmonary artery
The venous blood in the right ventricle is referred to as "mixed" because the
blood that enters the heart ________.
Correct Answer:
comes from tissue with differing metabolic activities
What is a decrease in carbon dioxide within the blood called?
Correct Answer:
hypocapnia
What is a deficiency of oxygen in the tissues called?
Correct Answer:
hypoxia
According to the hemoglobin dissociation curve, in systemic arteries at 100
mmHg, what is the percentage saturation of hemoglobin?
Correct Answer:
98%
Which of the following statements is FALSE of a leftward shift in the hemoglobin-
oxygen dissociation curve?
Correct Answer:
It can be caused by an increase in PCO2
Carbaminohemoglobin is hemoglobin with carbon dioxide bound to it.
Comprehensive | Questions & Exam Review
|Graded A+|100% Verified
Which of the following specifically describes the movement of air into and out of
the lungs? Correct Answer:
Pulmonary ventilation
All EXCEPT which of the following structures belong to the conducting zone of
the respiratory tract?
Correct Answer:
The alveoli
What are the smallest (and most distal) structures that remain a component of
the conducting zone in the respiratory tract?
Correct Answer:
terminal bronchioles
What is the function of ciliated cells in the conducting zone?
Correct Answer:
propel mucus containing trapped particles toward the glottis
What structure is the region of the lungs where the majority of gas exchange
occurs?
Correct Answer:
alveolus
Due to the negative intrapleural pressure, the pleural sac must remain airtight. If
the pleural sac were broken, as in a piercing wound, which of the following
would happen?
Correct Answer:
The lungs would collapse.
,The difference between what two pressures drives air into and out of the lungs?
Correct Answer:
atmospheric : intra-alveolar
Which of the following occurs when intra-alveolar pressure exceeds
atmospheric pressure?
Correct Answer:
air moves out of the lung
Which of the following is a measure of the distending force across the lungs?
Correct Answer:
transpulmonary pressure
What is the volume of air present in the lungs when the lungs are at rest (in
between breaths)?
Correct Answer:
functional residual capacity
What does contraction of the diaphragm cause?
Correct Answer:
increase in the volume of the thoracic cavity and therefore a decrease in intra-
alveolar pressure
The muscles of respiration are ________.
Correct Answer:
skeletal muscle innervated by the somatic nervous system
The change in lung volume (ΔV) that results from a given change in
transpulmonary pressure is known as which of the following?
Correct Answer:
Lung compliance
What is the forced expiratory volume?
Correct Answer:
,A measure of the percentage of the forced vital capacity that can be exhaled
within a certain length of time
What is the correct formula for vital capacity (VC)?
Correct Answer:
VC = VT + IRV + ERV
The tidal volume and inspiratory reserve volume together make up which of the
following?.
Correct Answer:
Inspiratory capacity
What measurement cannot be determined by a spirometer?
Correct Answer:
residual volume
Approximately how much oxygen does a human body consume per minute?
Correct Answer:
250 mL
Movement of oxygen and carbon dioxide between alveoli and blood occurs by
what process?
Correct Answer:
simple diffusion
What is the percentage of oxygen contained in air?
Correct Answer:
Approximately 21%
What is the most abundant gas in the air that we breathe?
Correct Answer:
nitrogen
At sea level, what is the normal partial pressure of carbon dioxide in pulmonary
arteries?
Correct Answer:
, 46 mm Hg
During intense exercise, the metabolic activity of muscle causes a ________ in
the partial pressure of oxygen in the tissue, ________ the movement of oxygen
into the tissue.
Correct Answer:
decrease : facilitating
Mixed venous blood samples can be taken from which of the following blood
vessels?
Correct Answer:
pulmonary artery
The venous blood in the right ventricle is referred to as "mixed" because the
blood that enters the heart ________.
Correct Answer:
comes from tissue with differing metabolic activities
What is a decrease in carbon dioxide within the blood called?
Correct Answer:
hypocapnia
What is a deficiency of oxygen in the tissues called?
Correct Answer:
hypoxia
According to the hemoglobin dissociation curve, in systemic arteries at 100
mmHg, what is the percentage saturation of hemoglobin?
Correct Answer:
98%
Which of the following statements is FALSE of a leftward shift in the hemoglobin-
oxygen dissociation curve?
Correct Answer:
It can be caused by an increase in PCO2
Carbaminohemoglobin is hemoglobin with carbon dioxide bound to it.
