Bio 202 Exam 3 Question and Answer [2026] |
UPDATED ACTUAL Exam | Detailed Answer
Explanations
• Closer to the heart, arteries would be expected to have a higher percentage of
____. -✓✓ elastic fibers
• an especially leaky type of capillary found in the liver is called a ____. -✓✓
sinusoid capillary
• The capillaries in the brain are called____ and they lack _____. -✓✓ Continuous;
gap junctions
• Which f the following is true? -✓✓ As blood volume decreases, blood pressure
and blood flow also decrease.
• Vasodilation in an arteriole prompts a ____. -✓✓ decrease in resistance
• You measure a patient's blood pressure to be 130/85. What is their pulse
pressure( PP) and MAP? -✓✓ PP=45 mmHg, MAP= 100 mmHg
• An obese patient comes to the clinic complaining of swollen feet and ankles,
fatigue, shortness of breath, and often feeling "spaced out." She is a cashier in a
grocery store, a job that requires her to stand all day. Outside of work, she engages
in no physical activity. She confesses that, because of her weight, she finds even
walking uncomfortable. Explain how the skeletal muscle pump might play a role in
this patient's signs and symptoms -✓✓ People who stand upright all day and are
inactive overall have very little skeletal muscle activity in the legs. Pooling of
blood in the legs and feet is common. Venous return to the heart is reduced, a
condition that in turn reduces cardiac output and therefore oxygenation of tissues
, throughout the body. This could at least partially account for the patient's fatigue
and shortness of breath, as well as her "spaced out" feeling, which commonly
reflects reduced oxygen to the brain.
• Hydrostatic pressure is ________. -✓✓ the pressure exerted by fluid in an
enclosed space
• Net filtration pressure is calculated by ________. -✓✓ subtracting the blood
colloid osmotic pressure from the capillary hydrostatic pressure
• T/F in one day, more fluid exits the capillary through filtration than enters
through reabsorption. -✓✓ true
• T/F The plasma proteins suspended in blood cross the capillary cell membrane
and enter the tissue fluid via facilitated diffusion. Explain your thinking. -✓✓
False. The plasma proteins suspended in blood cannot cross the semipermeable
capillary cell membrane, and so they remain in the plasma within the vessel, where
they account for the blood colloid osmotic pressure.
• A patient arrives at the emergency department with dangerously low blood
pressure. The patient's blood colloid osmotic pressure is normal. How would you
expect this situation to affect the patient's net filtration pressure? -✓✓ The patient's
blood would flow more sluggishly from the arteriole into the capillary bed. Thus,
the patient's capillary hydrostatic pressure would be below the normal 35 mm Hg
at the arterial end. At the same time, the patient's blood colloidal osmotic pressure
is normal—about 25 mm Hg. Thus, even at the arterial end of the capillary bed, the
net filtration pressure would be below 10 mm Hg, and an abnormally reduced level
of filtration would occur. In fact, reabsorption might begin to occur by the
midpoint of the capillary bed
UPDATED ACTUAL Exam | Detailed Answer
Explanations
• Closer to the heart, arteries would be expected to have a higher percentage of
____. -✓✓ elastic fibers
• an especially leaky type of capillary found in the liver is called a ____. -✓✓
sinusoid capillary
• The capillaries in the brain are called____ and they lack _____. -✓✓ Continuous;
gap junctions
• Which f the following is true? -✓✓ As blood volume decreases, blood pressure
and blood flow also decrease.
• Vasodilation in an arteriole prompts a ____. -✓✓ decrease in resistance
• You measure a patient's blood pressure to be 130/85. What is their pulse
pressure( PP) and MAP? -✓✓ PP=45 mmHg, MAP= 100 mmHg
• An obese patient comes to the clinic complaining of swollen feet and ankles,
fatigue, shortness of breath, and often feeling "spaced out." She is a cashier in a
grocery store, a job that requires her to stand all day. Outside of work, she engages
in no physical activity. She confesses that, because of her weight, she finds even
walking uncomfortable. Explain how the skeletal muscle pump might play a role in
this patient's signs and symptoms -✓✓ People who stand upright all day and are
inactive overall have very little skeletal muscle activity in the legs. Pooling of
blood in the legs and feet is common. Venous return to the heart is reduced, a
condition that in turn reduces cardiac output and therefore oxygenation of tissues
, throughout the body. This could at least partially account for the patient's fatigue
and shortness of breath, as well as her "spaced out" feeling, which commonly
reflects reduced oxygen to the brain.
• Hydrostatic pressure is ________. -✓✓ the pressure exerted by fluid in an
enclosed space
• Net filtration pressure is calculated by ________. -✓✓ subtracting the blood
colloid osmotic pressure from the capillary hydrostatic pressure
• T/F in one day, more fluid exits the capillary through filtration than enters
through reabsorption. -✓✓ true
• T/F The plasma proteins suspended in blood cross the capillary cell membrane
and enter the tissue fluid via facilitated diffusion. Explain your thinking. -✓✓
False. The plasma proteins suspended in blood cannot cross the semipermeable
capillary cell membrane, and so they remain in the plasma within the vessel, where
they account for the blood colloid osmotic pressure.
• A patient arrives at the emergency department with dangerously low blood
pressure. The patient's blood colloid osmotic pressure is normal. How would you
expect this situation to affect the patient's net filtration pressure? -✓✓ The patient's
blood would flow more sluggishly from the arteriole into the capillary bed. Thus,
the patient's capillary hydrostatic pressure would be below the normal 35 mm Hg
at the arterial end. At the same time, the patient's blood colloidal osmotic pressure
is normal—about 25 mm Hg. Thus, even at the arterial end of the capillary bed, the
net filtration pressure would be below 10 mm Hg, and an abnormally reduced level
of filtration would occur. In fact, reabsorption might begin to occur by the
midpoint of the capillary bed
