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Chapter 25 Quiz
Return to Animal Physiology 4e Student Resources
Chapter 25 Quiz
Quiz Content
*
not completed
.
In the human heart, oxygenated blood is carried from the lungs to the heart by the
vena cava.
correct
incorrect
aorta.
correct
incorrect
pulmonary veins.
correct
incorrect
pulmonary arteries.
correct
incorrect
*
not completed
.
Cardiac output is directly proportional to
heart rate.
correct
incorrect
stroke volume.
correct
incorrect
blood pressure.
correct
incorrect
both heart rate and stroke volume.
correct
incorrect
*
not completed
.
The hearts of vertebrates are myogenic, meaning that
neurons control the inherent pace of the heart.
correct
incorrect
the myocardium is compact and therefore has a coronary circulation.
correct
incorrect
the impulse to contract originates within the muscle tissue.
correct
incorrect
there is a cardiac conduction system.
correct
incorrect
*
not completed
.
The QRS complex arises from ventricular
depolarization.
correct
incorrect
contraction.
correct
incorrect
repolarization.
correct
incorrect
diastole.
correct
incorrect
*
not completed
.
Mean blood pressure in the brain of a standing person is _______ the blood pressure at the heart.
higher than
correct
incorrect
lower than
correct
incorrect
exactly the same as
correct
incorrect
approximately the same as
correct
incorrect
*
not completed
.
Which property has the greatest effect on the flow of liquid through a tube?
Pressure difference
correct
incorrect
Viscosity of the liquid
correct
incorrect
Length of the tube
correct
incorrect
Radius of the tube
correct
incorrect
*
not completed
.
Flow rate equals the difference in blood pressure between the entry of the vascular system and the exit vessels, divided by
the viscosity.
correct
incorrect
vascular resistance.
correct
incorrect
the viscosity multiplied by radius
4
.
correct
incorrect
radius
4
.
correct
incorrect
*
not completed
.
Which statement comparing the circulatory systems in mammals and birds is true?
Birds have far smaller hearts per gram.
correct
incorrect
Mammals have, on average, higher systolic blood pressures.
correct
incorrect
Mammals have a higher pressure systemic circuit.
correct
incorrect
Birds and mammals have essentially identical circulatory systems.
correct
incorrect
*
not completed
.
In which vessel(s) is there a lack of pressure pulse?
Large arteries, terminal arteries, and arterioles
correct
incorrect
Terminal arteries, arterioles, capillaries, and venules
correct
incorrect
Capillaries, venules, and veins
correct
incorrect
Venules and veins
correct
incorrect
*
not completed
.
Which vessels of the systemic vascular system have the highest total cross-sectional area?
Arterial vessels
correct
incorrect
Capillary beds
correct
incorrect
Venous vessels
correct
incorrect
Both arteries and veins have equal areas.
correct
incorrect
*
not completed
.
In a mammal, blood pressure is lowest in the
arterioles.
correct
incorrect
capillaries.
correct
incorrect
venules.
correct
incorrect
veins.
correct
incorrect
*
not completed
.
Excessive protein in the blood plasma will _______ the loss of fluid through the capillaries.
increase
correct
incorrect
decrease
correct
incorrect
have no effect on
correct
incorrect
increase, and then decrease
correct
incorrect
*
not completed
.
When a mammal exercises, oxygen delivery is increased by
increased blood flow.
correct
incorrect
the extraction of more O
2
per unit volume.
correct
incorrect
increased blood flow and the extraction of more O
2
per unit volume.
correct
incorrect
increased blood flow, the extraction of more O
2
per unit volume, and a lowering of resistance in the systemic vasculature.
correct
incorrect
*
not completed
.
In _______, there is no separation of oxygenated and deoxygenated blood at the heart.
a teleost fish
correct
incorrect
a lungfish
correct
incorrect
amphibians
correct
incorrect
reptiles
correct
incorrect
*
not completed
.
The chambers of the teleost fish heart are the
atria and the ventricles.
correct
incorrect
atria, ventricles, and bulbus arteriosus.
correct
incorrect
sinus venosus, atrium, and ventricles.
correct
incorrect
sinus venosus, atrium, ventricle, and bulbus arteriosus.
correct
incorrect
*
not completed
.
In a fish that has an air-breathing organ,
there are not likely to be functioning gills.
correct
incorrect
the blood leaving the air-breathing organ mixes with blood leaving the gills.
correct
incorrect
the blood leaving the air-breathing organ mixes with systemic venous blood.
correct
incorrect
the blood enters the air-breathing organ following its exit from the gills.
correct
incorrect
*
not completed
.
Among nonavian reptiles, crocodilians are unique because they
have birdlike blood pressures.
correct
incorrect
have hearts that are large relative to their mass.
correct
incorrect
can shunt blood.
correct
incorrect
have a complete ventricular septum.
correct
incorrect
*
not completed
.
Which statement about squid is
false
?
Their systemic heart receives largely deoxygenated blood.
correct
incorrect
Their systemic heart is myogenic.
correct
incorrect
Blood enters the systemic heart from the gills.
correct
incorrect
Branchial hearts pump blood through the gills.
correct
incorrect
*
not completed
.
In crustacean circulatory systems, deoxygenated blood from the tissues enters the heart via
ostia.
correct
incorrect
the cardinal veins.
correct
incorrect
the dorsal abdominal artery.
correct
incorrect
the dorsal abdominal vein.
correct
incorrect
*
not completed
.
Which statement about the insect circulatory system is true?
Insects have a closed circulatory system and a tracheal system for delivering O
2
.
correct
incorrect
Insects have an open circulatory system and a tracheal system for delivering O
2
.
correct
incorrect
Insects have an open circulatory system and a derived lung for delivering O
2
.
correct
incorrect
Insects have a closed circulatory system and solely a diffusion-based system for delivering O
2
.
correct
incorrect
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