UK PGY 206 Exam 4 Questions With Complete Solutions
Aldosterone Correct Answer -made in adrenal cortex
-cortical collecting tubule to reabsorb NaCl
renin converts angioteninsogen to angiotensin I->angiotension
II->stimulates aldosterone->reabsorb NaCl -> reabsorb H2O
[K+] dependant on secretion (distal tubule)
high plasma K+=secrete aldosterone->secrete K+-> lower
plasma K+
alveolar ventilation Correct Answer Frequency x (tidal
volume-atomic dead space)
Anemia Correct Answer Low hemoglobin
Anti-Diuretic Hormone Correct Answer Hypothalamic
osmoreceptors sense increased plasma osmolarity (dehydration)
-> ADH stimulates cyclic AMP -> translocates aquaporin
containing vesicles to lumen membrane->H2O moves to
peritubular capillaries
Affects all over
Asthma Correct Answer increased resistance to air flow-
smooth muscle constriction, swelling and mucous
Atomic dead space Correct Answer air that doesn't get to
exchange
the volume of the conducting zone
, Basic Nephron Structure Correct Answer One epithelial cell
thick
Proximal tubule->loop of henle->distal tubule->collecting tubule
Proximal tubule has villi to increase SA (distal does not)
Blood gasses during exercise Correct Answer remain constant
until anaerobic activity begins
PO2 always constant
As ventilation increases, efficiency decreases-have to work to
breathe that hard
Boyles Law Correct Answer Pressure inversely related to
volume
Brain control of breathing Correct Answer Medulla
establishes breathing pattern
Pons-integrates vagus nerve input and fine tunes medullary
output
Cerebral Cortex-conscious control
Carboxyhemoglobin Correct Answer Fe2+ bound to CO
CO has more affinity than
O2 transport is impared
Central chemoreceptors Correct Answer Detects changes in
partial pressure of CO2
CO2 diffuses into CSF, uses carbonic anhydrase to form H+ and
HCO3-
Neurons detect pH drop in CSF
Aldosterone Correct Answer -made in adrenal cortex
-cortical collecting tubule to reabsorb NaCl
renin converts angioteninsogen to angiotensin I->angiotension
II->stimulates aldosterone->reabsorb NaCl -> reabsorb H2O
[K+] dependant on secretion (distal tubule)
high plasma K+=secrete aldosterone->secrete K+-> lower
plasma K+
alveolar ventilation Correct Answer Frequency x (tidal
volume-atomic dead space)
Anemia Correct Answer Low hemoglobin
Anti-Diuretic Hormone Correct Answer Hypothalamic
osmoreceptors sense increased plasma osmolarity (dehydration)
-> ADH stimulates cyclic AMP -> translocates aquaporin
containing vesicles to lumen membrane->H2O moves to
peritubular capillaries
Affects all over
Asthma Correct Answer increased resistance to air flow-
smooth muscle constriction, swelling and mucous
Atomic dead space Correct Answer air that doesn't get to
exchange
the volume of the conducting zone
, Basic Nephron Structure Correct Answer One epithelial cell
thick
Proximal tubule->loop of henle->distal tubule->collecting tubule
Proximal tubule has villi to increase SA (distal does not)
Blood gasses during exercise Correct Answer remain constant
until anaerobic activity begins
PO2 always constant
As ventilation increases, efficiency decreases-have to work to
breathe that hard
Boyles Law Correct Answer Pressure inversely related to
volume
Brain control of breathing Correct Answer Medulla
establishes breathing pattern
Pons-integrates vagus nerve input and fine tunes medullary
output
Cerebral Cortex-conscious control
Carboxyhemoglobin Correct Answer Fe2+ bound to CO
CO has more affinity than
O2 transport is impared
Central chemoreceptors Correct Answer Detects changes in
partial pressure of CO2
CO2 diffuses into CSF, uses carbonic anhydrase to form H+ and
HCO3-
Neurons detect pH drop in CSF
