HS 210 Exam 4 Questions With
Verified Answers
complete the following statement using the choices below. Air moves out of the lungs
when the pressure inside the lungs is - ANSWER greater than the pressure in the
atmosphere
which of the following lists the structures in the correct order of inward air flow -
ANSWER nasopharynx, oropharynx, laryngopharynx, larynx, trachea
which of the following will influence external respiration? - ANSWER all of the above
influence external respiration
(thickness/SA of respiratory membrane, gas partial pressure gradients, gas solubility,
ventilation-perfusion coupling)
henry's law states that solubility of a gas ________ as ________ of the gas increases. -
ANSWER increases, partial pressure
the process of respiration that moves air into and out of the lungs is known as ________
and will decrease upon _________ nervous system activation. - ANSWER pulmonary
ventilation, parasympathetic
Sharna has been having difficulty breathing for the past month. Her primary care
physician ran a test and determined that her __________ cells have been attacked and
completely destroyed in one lung. That lung is now more susceptible to collapse due to
her reduced surfactant levels, and she will likely continue to notice direct difficulty in
________. - ANSWER type II alveolar, respiration
an obstruction in the airway resulting in decreased ventilation and decreased levels of
available oxygen, should cause which of the following changes? - ANSWER pulmonary
arteriole vasoconstriction
Timothy has been having difficulty breathing since he had pneumonia last month.
Recently he had severe pain in his chest and back, and his breathing was extremely
irregular. The doctor at the emergency room told him that one of the lobes of his lung
had collapsed. Which of the following pressure scenarios would best explain how part of
his lung collapsed? - ANSWER Patm > Ppul < Pip
based on the oxygen-hemoglobin dissociation curve image (to the right) which of the
following would cause the curve to shift right - ANSWER an acidic internal environment
consider the tidal volume (pictured below)
, which of the following images best represents physiologically plausible curves for
pressure changes of intrapulmonary and intrapleural pressures matching the given tidal
volume. - ANSWER C (two waves going negative then positive)
Consider a pleural effusion (a buildup of excess fluid in the pleural space between the
lung and the chest wall). Which of the following choices best describes the tidal volume
and pressures of the lung with the pleural effusion? - ANSWER Decreased tidal volume
and decreased transpulmonary pressure
based on the oxygen-hemoglobin dissociation curve displayed, which point best
represents the Haldane Effect or oxygen loading at the alveoli - ANSWER point D
based on the oxygen-hemoglobin dissociation curve displayed, which point best
represents the O2-Hb relationship during strenuous exercise - ANSWER Point A
the correct anatomical flow or urine is as follows - ANSWER renal pyramid, minor calyx,
major calyx, renal pelvis, ureter, bladder, urethra
__________ cells release renin which ultimately leads to increased ____________ -
ANSWER Juxtaglomerular (JG) or granular cells, glomerular filtration
Which of the following answers supports filtration but not selective filtration in the renal
corpuscle - ANSWER afferent arteriole blood pressure
Patm = Ppul - ANSWER no change (ventilation)
decreased lung compliance - ANSWER decrease (ventilation)
sympathetic activation of bronchiole smooth muscles - ANSWER increase (ventilation)
pulmonary arteriole vasodilation - ANSWER increase (ventilation)
increase flexibility of the thorax - ANSWER increase (ventilation)
same volume but decreased surface area in the alveolar sacs - ANSWER no change
(ventilation)
accumulation of the scar tissue (fibrosis) replacing lung tissue - ANSWER decrease
(ventilation)
paralysis of external intercostal muscles - ANSWER increase (ventilation)
macula densa cells sense a decrease in NaCl filtrate content - ANSWER increase
(glomerular filtration)
renal efferent arterioles vasodilate - ANSWER increase (glomerular filtration)
the visceral layer of the renal corpuscle is composed of all simple squamous cells rather
than podocytes - ANSWER decrease (glomerular filtration)
a significant increase in the concentration of proteins in the capsular space surrounding
Verified Answers
complete the following statement using the choices below. Air moves out of the lungs
when the pressure inside the lungs is - ANSWER greater than the pressure in the
atmosphere
which of the following lists the structures in the correct order of inward air flow -
ANSWER nasopharynx, oropharynx, laryngopharynx, larynx, trachea
which of the following will influence external respiration? - ANSWER all of the above
influence external respiration
(thickness/SA of respiratory membrane, gas partial pressure gradients, gas solubility,
ventilation-perfusion coupling)
henry's law states that solubility of a gas ________ as ________ of the gas increases. -
ANSWER increases, partial pressure
the process of respiration that moves air into and out of the lungs is known as ________
and will decrease upon _________ nervous system activation. - ANSWER pulmonary
ventilation, parasympathetic
Sharna has been having difficulty breathing for the past month. Her primary care
physician ran a test and determined that her __________ cells have been attacked and
completely destroyed in one lung. That lung is now more susceptible to collapse due to
her reduced surfactant levels, and she will likely continue to notice direct difficulty in
________. - ANSWER type II alveolar, respiration
an obstruction in the airway resulting in decreased ventilation and decreased levels of
available oxygen, should cause which of the following changes? - ANSWER pulmonary
arteriole vasoconstriction
Timothy has been having difficulty breathing since he had pneumonia last month.
Recently he had severe pain in his chest and back, and his breathing was extremely
irregular. The doctor at the emergency room told him that one of the lobes of his lung
had collapsed. Which of the following pressure scenarios would best explain how part of
his lung collapsed? - ANSWER Patm > Ppul < Pip
based on the oxygen-hemoglobin dissociation curve image (to the right) which of the
following would cause the curve to shift right - ANSWER an acidic internal environment
consider the tidal volume (pictured below)
, which of the following images best represents physiologically plausible curves for
pressure changes of intrapulmonary and intrapleural pressures matching the given tidal
volume. - ANSWER C (two waves going negative then positive)
Consider a pleural effusion (a buildup of excess fluid in the pleural space between the
lung and the chest wall). Which of the following choices best describes the tidal volume
and pressures of the lung with the pleural effusion? - ANSWER Decreased tidal volume
and decreased transpulmonary pressure
based on the oxygen-hemoglobin dissociation curve displayed, which point best
represents the Haldane Effect or oxygen loading at the alveoli - ANSWER point D
based on the oxygen-hemoglobin dissociation curve displayed, which point best
represents the O2-Hb relationship during strenuous exercise - ANSWER Point A
the correct anatomical flow or urine is as follows - ANSWER renal pyramid, minor calyx,
major calyx, renal pelvis, ureter, bladder, urethra
__________ cells release renin which ultimately leads to increased ____________ -
ANSWER Juxtaglomerular (JG) or granular cells, glomerular filtration
Which of the following answers supports filtration but not selective filtration in the renal
corpuscle - ANSWER afferent arteriole blood pressure
Patm = Ppul - ANSWER no change (ventilation)
decreased lung compliance - ANSWER decrease (ventilation)
sympathetic activation of bronchiole smooth muscles - ANSWER increase (ventilation)
pulmonary arteriole vasodilation - ANSWER increase (ventilation)
increase flexibility of the thorax - ANSWER increase (ventilation)
same volume but decreased surface area in the alveolar sacs - ANSWER no change
(ventilation)
accumulation of the scar tissue (fibrosis) replacing lung tissue - ANSWER decrease
(ventilation)
paralysis of external intercostal muscles - ANSWER increase (ventilation)
macula densa cells sense a decrease in NaCl filtrate content - ANSWER increase
(glomerular filtration)
renal efferent arterioles vasodilate - ANSWER increase (glomerular filtration)
the visceral layer of the renal corpuscle is composed of all simple squamous cells rather
than podocytes - ANSWER decrease (glomerular filtration)
a significant increase in the concentration of proteins in the capsular space surrounding
