FUNDAMENTALS OF HUMAN
PHYSIOLOGY UIOWA EXAM 4
PRACTICE QUIZ QUESTIONS AND
ANSWERS
, Our inspiratory muscles are innervated and activated by _____. - ANSWERSsomatic
efferent nerves
If a substance is filtered in the body and secreted, but not reabsorbed, what must be
TRUE? - ANSWERSexcretion rate will be greater than filtration rate
GFR is increased by _______, which would occur in response to _______. -
ANSWERSa decrease in SNS activity; an increase in blood pressure
Which of the following represents a correct match between nephron component and
function? - ANSWERSloop of Henle; creates a hyperosmotic medullary interstitium
Which of the following is TRUE of the renin-angiotensin-aldosterone system (RAAS)? -
ANSWERSaldosterone will decrease Na+ excretion
Doug goes for an hour jog in the middle of an Iowa summer. He loses substantial water
via sweat, concentrating his ECF. This will result in ______, which will lead to _____. -
ANSWERSsecretion of ADH; a small volume of concentrated urine
Which 2 things are needed to fix an increased ECF osmolarity? - ANSWERSa
hyperosmotic medullary interstitium and a collecting duct that is permeable to water
Which of the following is FALSE regarding control of breathing muscles? -
ANSWERSthe most important input to the respiratory control center for the purposes of
regulating ventilation comes from lung stretch receptors
Which of the following changes within the arterial blood will stimulate a reflex that
increases ventilation? - ANSWERSincreased PCO2
During intense exercise [H+] increases due to buildup of lactic acid. The body combats
this by hyperventilating. Why is this helpful? - ANSWERSit decreases CO2 which
causes H+ to combine with HCO3-, removing it from solution
Which of the following pairs of structures and descriptions is NOT correct? -
ANSWERStrachea; common passage for food and air
Which of the following correctly describes the mechanical processes of inspiration? -
ANSWERSthe lungs first expand, lowering the alveolar pressure and causing the air to
flow in
Asthma is a disease of ______. - ANSWERSexcessive resistance
PHYSIOLOGY UIOWA EXAM 4
PRACTICE QUIZ QUESTIONS AND
ANSWERS
, Our inspiratory muscles are innervated and activated by _____. - ANSWERSsomatic
efferent nerves
If a substance is filtered in the body and secreted, but not reabsorbed, what must be
TRUE? - ANSWERSexcretion rate will be greater than filtration rate
GFR is increased by _______, which would occur in response to _______. -
ANSWERSa decrease in SNS activity; an increase in blood pressure
Which of the following represents a correct match between nephron component and
function? - ANSWERSloop of Henle; creates a hyperosmotic medullary interstitium
Which of the following is TRUE of the renin-angiotensin-aldosterone system (RAAS)? -
ANSWERSaldosterone will decrease Na+ excretion
Doug goes for an hour jog in the middle of an Iowa summer. He loses substantial water
via sweat, concentrating his ECF. This will result in ______, which will lead to _____. -
ANSWERSsecretion of ADH; a small volume of concentrated urine
Which 2 things are needed to fix an increased ECF osmolarity? - ANSWERSa
hyperosmotic medullary interstitium and a collecting duct that is permeable to water
Which of the following is FALSE regarding control of breathing muscles? -
ANSWERSthe most important input to the respiratory control center for the purposes of
regulating ventilation comes from lung stretch receptors
Which of the following changes within the arterial blood will stimulate a reflex that
increases ventilation? - ANSWERSincreased PCO2
During intense exercise [H+] increases due to buildup of lactic acid. The body combats
this by hyperventilating. Why is this helpful? - ANSWERSit decreases CO2 which
causes H+ to combine with HCO3-, removing it from solution
Which of the following pairs of structures and descriptions is NOT correct? -
ANSWERStrachea; common passage for food and air
Which of the following correctly describes the mechanical processes of inspiration? -
ANSWERSthe lungs first expand, lowering the alveolar pressure and causing the air to
flow in
Asthma is a disease of ______. - ANSWERSexcessive resistance
