BIO 203 EXAM 2 LEC 9-16
QUESTIONS & ANSWERS 100%
CORRECT
Which of the following is NOT TRUE of animals that have open circulatory systems?
They are not vertebrates.
They have a mechanism to pump circulatory fluid.
They have lower pressure in their circulatory compartments compared to animals
with closed circulatory compartments.
Almost all of them have specialized gas transporting blood cells - answerAlmost all
of them have specialized gas transporting blood cells
At the point in the cardiac cycle when the volume of blood in the right ventricle is
volume F, then the volume of blood in the left ventricle is also volume F.
The hydrostatic pressure in a capillary is 32 mm Hg, and the plasma colloid osmotic
pressure is 25 mmHg. What is the net filtration pressure, in mmHg? Enter your
answer as a number. Do not enter words or symbols. - answer7
PH at the arterial end of a capillary is 32 mm Hg, and PH at the venous end is 24
mmHg. The plasma colloid osmotic pressure across the entire capillary bed is 25mm
Hg. Across the entire length of the of the capillary, which of the following will most
likely occur?
Net Filtration
Net Absorption
Net Filtration and Net Absorption
Neither filtration nor absorption - answerNet Filtration
Which of the following steps of excitation-contraction coupling are different between
skeletal muscle and contractile myocardium?
Stimulus to open RyR.
Formation of cross-bridges between actin and myosin.
Removal of calcium from cytoplasm/sarcoplasm.
Stimulus to open DHP receptors. - answerStimulus to open RyR.
Removal of calcium from cytoplasm/sarcoplasm.
Which of the following is/are true about the hormonal control of female reproduction
a. High testosterone in a female may prevent ovulation
b. The corpus luteum forms from follicular cells after ovulation
,c. Ovulation occurs when estrogen and LH are high
d. (a) and (b) are correct; (c) is incorrect
e. (a), (b), and (c) are all correct - answere. (a), (b), and (c) are all correct
Which of the following is/are true about the male reproductive system?
a. Sertoli cells secrete DHT, which stimulates spermatogenesis
b. Leydig cells express cell surface receptors that bind LH
c. Sperm are fully motile and mature when they leave the seminiferous tubules
d. (a) and (b) are correct; (c) is incorrect
e. (a), (b), and (c) are all correct - answerb. Leydig cells express cell surface
receptors that bind LH
A deoxygenated red blood cell returning to the heart from the systemic circulation
would pass through the right ventricle before passing through the left atrium.
True
False - answerTrue
Calculate the heart rate of the heart in the image below (in beats per minute). Enter
your answer as a number. Do not enter letters or symbols. (image not included) -
answer75
Calculate the stroke volume of the heart shown in the image below (in mL per beat).
Enter a number. Do not enter letters or symbols. (image not included) - answer70
Calculate the cardiac output from the heart shown in the image below (in L/min).
Enter your answer as a number. Do not include letters or symbols. (image not
included) - answer5.250
Throughout the vascular tree, arteries carry oxygenated blood whereas veins carry
deoxygenated blood.
True
False - answerFalse
Match each cardiac valve with the two chambers it separates. Each pair of chambers
may be used more than once, or not at all.
tricuspid
mitral
bicuspid
pulmonary semilunar
aortic semilunar
A. right atrium and right ventricle
B. left atrium and left ventricle
C. right ventricle and pulmonary artery
D. left ventricle and aorta
, E. right ventricle and aorta
F. left ventricle and pulmonary artery - answerABBCD
Match the following terms describing electrical events with the correct phases of the
cardiac cycle.
The ventricular muscle cells depolarize at the start of this phase.
During this phase, Na+ entry through the funny channels causes the pacemaker
potential of SA nodal cells to gradually become less negative until it reaches
threshold.
The ventricular muscle cells repolarize right before this phase.
The cytosolic concentration of calcium in the contractile cells of the ventricle is
highest during this phase.
A. ventricular filling
B. isovolumetric relaxation
C. ventricular ejection
D. isovolumetric contraction - answerDABC
Match the following terms describing the physical/mecahnical events with the correct
phases of the cardiac cycle. Each phase may be used more than once.
All 4 cardiac valves are closed and all 4 chambers are relaxed during this phase.
The maximum amount of blood is in the ventricles at the end of this phase.
The pressure in the ventricles is higher than in the atria, but lower than in the
arteries, during this phase.
The semilunar valves are open and the AV valves are closed during this phase.
The atria contract at the end of this phase.
The pressure in the ventricles is higher than the pressure in both the atria and the
arteries during this phase.
Systole begins with this phase.
A. ventricular ejection
B. isovolumetric relaxation
C. isovolumetric contraction
D. ventricular filling - answerBDCADAC
Which of the following statements about the action potentials in contractile
myocardial cells (cardiac muscle) is INCORRECT?
QUESTIONS & ANSWERS 100%
CORRECT
Which of the following is NOT TRUE of animals that have open circulatory systems?
They are not vertebrates.
They have a mechanism to pump circulatory fluid.
They have lower pressure in their circulatory compartments compared to animals
with closed circulatory compartments.
Almost all of them have specialized gas transporting blood cells - answerAlmost all
of them have specialized gas transporting blood cells
At the point in the cardiac cycle when the volume of blood in the right ventricle is
volume F, then the volume of blood in the left ventricle is also volume F.
The hydrostatic pressure in a capillary is 32 mm Hg, and the plasma colloid osmotic
pressure is 25 mmHg. What is the net filtration pressure, in mmHg? Enter your
answer as a number. Do not enter words or symbols. - answer7
PH at the arterial end of a capillary is 32 mm Hg, and PH at the venous end is 24
mmHg. The plasma colloid osmotic pressure across the entire capillary bed is 25mm
Hg. Across the entire length of the of the capillary, which of the following will most
likely occur?
Net Filtration
Net Absorption
Net Filtration and Net Absorption
Neither filtration nor absorption - answerNet Filtration
Which of the following steps of excitation-contraction coupling are different between
skeletal muscle and contractile myocardium?
Stimulus to open RyR.
Formation of cross-bridges between actin and myosin.
Removal of calcium from cytoplasm/sarcoplasm.
Stimulus to open DHP receptors. - answerStimulus to open RyR.
Removal of calcium from cytoplasm/sarcoplasm.
Which of the following is/are true about the hormonal control of female reproduction
a. High testosterone in a female may prevent ovulation
b. The corpus luteum forms from follicular cells after ovulation
,c. Ovulation occurs when estrogen and LH are high
d. (a) and (b) are correct; (c) is incorrect
e. (a), (b), and (c) are all correct - answere. (a), (b), and (c) are all correct
Which of the following is/are true about the male reproductive system?
a. Sertoli cells secrete DHT, which stimulates spermatogenesis
b. Leydig cells express cell surface receptors that bind LH
c. Sperm are fully motile and mature when they leave the seminiferous tubules
d. (a) and (b) are correct; (c) is incorrect
e. (a), (b), and (c) are all correct - answerb. Leydig cells express cell surface
receptors that bind LH
A deoxygenated red blood cell returning to the heart from the systemic circulation
would pass through the right ventricle before passing through the left atrium.
True
False - answerTrue
Calculate the heart rate of the heart in the image below (in beats per minute). Enter
your answer as a number. Do not enter letters or symbols. (image not included) -
answer75
Calculate the stroke volume of the heart shown in the image below (in mL per beat).
Enter a number. Do not enter letters or symbols. (image not included) - answer70
Calculate the cardiac output from the heart shown in the image below (in L/min).
Enter your answer as a number. Do not include letters or symbols. (image not
included) - answer5.250
Throughout the vascular tree, arteries carry oxygenated blood whereas veins carry
deoxygenated blood.
True
False - answerFalse
Match each cardiac valve with the two chambers it separates. Each pair of chambers
may be used more than once, or not at all.
tricuspid
mitral
bicuspid
pulmonary semilunar
aortic semilunar
A. right atrium and right ventricle
B. left atrium and left ventricle
C. right ventricle and pulmonary artery
D. left ventricle and aorta
, E. right ventricle and aorta
F. left ventricle and pulmonary artery - answerABBCD
Match the following terms describing electrical events with the correct phases of the
cardiac cycle.
The ventricular muscle cells depolarize at the start of this phase.
During this phase, Na+ entry through the funny channels causes the pacemaker
potential of SA nodal cells to gradually become less negative until it reaches
threshold.
The ventricular muscle cells repolarize right before this phase.
The cytosolic concentration of calcium in the contractile cells of the ventricle is
highest during this phase.
A. ventricular filling
B. isovolumetric relaxation
C. ventricular ejection
D. isovolumetric contraction - answerDABC
Match the following terms describing the physical/mecahnical events with the correct
phases of the cardiac cycle. Each phase may be used more than once.
All 4 cardiac valves are closed and all 4 chambers are relaxed during this phase.
The maximum amount of blood is in the ventricles at the end of this phase.
The pressure in the ventricles is higher than in the atria, but lower than in the
arteries, during this phase.
The semilunar valves are open and the AV valves are closed during this phase.
The atria contract at the end of this phase.
The pressure in the ventricles is higher than the pressure in both the atria and the
arteries during this phase.
Systole begins with this phase.
A. ventricular ejection
B. isovolumetric relaxation
C. isovolumetric contraction
D. ventricular filling - answerBDCADAC
Which of the following statements about the action potentials in contractile
myocardial cells (cardiac muscle) is INCORRECT?
