Chapter 37:
Respiration, Circulation, and Excretion
Practice Test
1.
What is the main function of red blood cells?
a.
They attack foreign material.
b.
They transport oxygen.
c.
They clot the blood.
d.
They transport food.
Hint
2.
How does the pacemaker initiate the heartbeat?
a.
It signals the medulla to initiate the heartbeat.
b.
It secretes glucose to stimulate the cardiac muscle to beat.
c.
It causes a hormone to be secreted to start the heartbeat.
d.
It generates an electrical impulse that spreads over the atria.
Hint
3.
Which of the following is a mechanism used to clean the air you breathe?
a.
Mucus in the trachea traps materials to be disposed of by the diaphragm.
b.
Cilia lining the alveoli constantly beat to move fluids out of the lungs.
c.
Mucus inside the esophagus is sticky and traps foreign materials.
d.
Cilia lining the bronchi constantly move mucus up towards your throat.
Hint
4.
If you have AB-type blood, what type of antibodies do you have in your blood?
a.
anti-A
b.
none
c.
anti-A and anti-B
d.
anti-B
Hint
5.
In mammals, including humans, the left ventricle is thicker than the right ventricle. This is due to the fact that the left ventricle __________.
a.
thickens as a result of the aging process
b.
muscle is weaker, so it must be larger
c.
pumps blood to all of the body
d.
pumps blood to the lungs
Hint
6.
How does the majority of carbon dioxide travel in the blood?
a.
attached to red blood cells
b.
attached to white blood cells
c.
dissolved in the plasma
d.
combined with water
Hint
7.
Which circulatory vessels contain valves and carry blood toward the heart?
a.
arteries
b.
veins
c.
aortas
d.
capillaries
Hint
8.
What process occurs in the alveoli?
a.
initiation of the contraction of the respiratory muscles
b.
production of the iron containing protein molecule called hemoglobin
c.
an exchange of oxygen into the blood and carbon dioxide out of the blood
d.
breakdown of glucose for energy utilization by body cells
Hint
9.
Which blood cells are large and nucleated?
a.
red blood cells
b.
white blood cells
c.
platelets
d.
plasma
Hint
10.
When you inhale __________.
a.
the epiglottis covers the trachea
b.
the muscles between the ribs contract
c.
air rushes out of the alveoli
d.
the diaphragm muscles relax
Hint
11.
Which of the following is the order of blood through the heart?
a.
aorta, right atrium, left atrium, pulmonary arteries, pulmonary veins, right ventricle, left ventricle
b.
right atrium, right ventricle, pulmonary arteries, pulmonary veins, left atrium, left ventricle , aorta
c.
right ventricle, left ventricle, pulmonary veins, pulmonary arteries, right ventricle, left ventricle, aorta
d.
right ventricle, left ventricle, pulmonary arteries, pulmonary veins, right atrium, left atrium
Hint
12.
__________ pressure occurs when the heart`s ventricles contract.
a.
Systolic
b.
Diastolic
c.
Blood
d.
Pulse
Hint
13.
What is the basic filtering unit of the kidney?
a.
Bowman`s capsule
b.
glomerulus
c.
nephron
d.
urinary bladder
Hint
14.
As materials pass from the Bowman`s capsule down the kidney tubules, ions move out of the tubules back into the blood by what process?
a.
passive transport
b.
osmosis
c.
diffusion
d.
active transport
Hint
15.
Platelets, produced in the bone marrow, have which of the following actions?
a.
They deliver carbon dioxide to the lungs.
b.
They carry oxygen to the tissues.
c.
They attack foreign material in the blood.
d.
They help blood clot after an injury that disrupts a blood vessel.
Hint
