BIO 322 EXAM 1 QUESTIONS WITH COMPLETE
SOLUTIONS
A diabetic patient has a blood glucose concentration of
378mg/dl after eating a slice of birthday cake. What do you
know about their plasma osmolarity? Correct Answers Its
definitely high because glucose is an osmotic particle. I would
estimate plasma osmolarity to be around 320mOsm/L
A hypertonic intravenous solution is given to patients who have
hyponatremia. What is true? Correct Answers The hypertonic
IV will cause RBCs to shrink. The patient has a low plasma Na+
concentration.
A patient comes to the emergency room with numbness on 1
side of her face, has trouble speaking, and 1 eyelid drooping.
She is about 60 years old. She is immediately treated for stroke
and given thrombolytic therapy. This therapy attempts to
dissolve blood clots, and prevent more clotting. What do you
predict will be done to her blood? Correct Answers
Thrombolytic therapy will reduce plasma vit K and Ca2+ which
will reduce or stop blood clotting.
A sample of bone marrow unusually low myeloid stem cells.
What body process would be impaired? Correct Answers The
patient would be anemic and may have imapired immune system
because RBCs and WBCs (except lymphocytes) are derived
from myeloid stem cells.
Albumins Correct Answers are the most abundant plasma
protein and are the major contributor of plasma osmolarity.
, Blood clotting is a complicated process that is essential for
maitnence of life. Which part of the process begins with the
activation of proenzymes that are already in the bloodstream
(such as factor XII)? Correct Answers the intrinsic pathway
Calculate the osmotic concentration of a solution containing
135mM NaCl, 5mM KCl, 2mM CaCl2 and 5.5mM glucose.
Correct Answers 291.5 mOsm/L
Comparing plasma to interstitial fluid Correct Answers the
concentration of dissolved proteins in plasma is ~7%,
significantly higher than interstitial fluid.
Consider blood flow in the heart. Beginning in the right atria,
blood flows through the... Correct Answers right AV valve,
right ventricle, pulmonary vavle, pulmonary circuit, left atria,
left AV valve, left ventricle, aortic valve, aorta, and the systemic
curcuit.
Consider electrical impulse conduction through the heart. What
is correct? Correct Answers The impulse travels from the SA
node to the AV node, there is a 100msec delay, and the impluse
then travels along the interventricular septum, bundle branches,
and to the purkinje fibers at the apex of the heart.
Damage to the aortic semilunar valve on the left side of the heart
Correct Answers will interfere with blood flow to the aorta
SOLUTIONS
A diabetic patient has a blood glucose concentration of
378mg/dl after eating a slice of birthday cake. What do you
know about their plasma osmolarity? Correct Answers Its
definitely high because glucose is an osmotic particle. I would
estimate plasma osmolarity to be around 320mOsm/L
A hypertonic intravenous solution is given to patients who have
hyponatremia. What is true? Correct Answers The hypertonic
IV will cause RBCs to shrink. The patient has a low plasma Na+
concentration.
A patient comes to the emergency room with numbness on 1
side of her face, has trouble speaking, and 1 eyelid drooping.
She is about 60 years old. She is immediately treated for stroke
and given thrombolytic therapy. This therapy attempts to
dissolve blood clots, and prevent more clotting. What do you
predict will be done to her blood? Correct Answers
Thrombolytic therapy will reduce plasma vit K and Ca2+ which
will reduce or stop blood clotting.
A sample of bone marrow unusually low myeloid stem cells.
What body process would be impaired? Correct Answers The
patient would be anemic and may have imapired immune system
because RBCs and WBCs (except lymphocytes) are derived
from myeloid stem cells.
Albumins Correct Answers are the most abundant plasma
protein and are the major contributor of plasma osmolarity.
, Blood clotting is a complicated process that is essential for
maitnence of life. Which part of the process begins with the
activation of proenzymes that are already in the bloodstream
(such as factor XII)? Correct Answers the intrinsic pathway
Calculate the osmotic concentration of a solution containing
135mM NaCl, 5mM KCl, 2mM CaCl2 and 5.5mM glucose.
Correct Answers 291.5 mOsm/L
Comparing plasma to interstitial fluid Correct Answers the
concentration of dissolved proteins in plasma is ~7%,
significantly higher than interstitial fluid.
Consider blood flow in the heart. Beginning in the right atria,
blood flows through the... Correct Answers right AV valve,
right ventricle, pulmonary vavle, pulmonary circuit, left atria,
left AV valve, left ventricle, aortic valve, aorta, and the systemic
curcuit.
Consider electrical impulse conduction through the heart. What
is correct? Correct Answers The impulse travels from the SA
node to the AV node, there is a 100msec delay, and the impluse
then travels along the interventricular septum, bundle branches,
and to the purkinje fibers at the apex of the heart.
Damage to the aortic semilunar valve on the left side of the heart
Correct Answers will interfere with blood flow to the aorta
