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WorksheetsCardiovascular system virtual classroom
Total questions: 20
Worksheet time: 20mins
Which of the following delivers oxygen to cells?
Red Blood cells
White blood cells
Platelets
Plasma
Which of the following are the blood vessels that have the thickest walls?
Veins
Arteries
Capillaries
Which is NOT a function of the circulatory system?
deliver O2 and nutrients to cells
remove CO2 and wastes from cells
break down carbohydrates into glucose
transport other materials through body
What creates the "lub dub" heart sounds?
Flow of blood
Closing of valves
Opening of valves
Breathing
What prevents blood from flowing back into the atria when the ventricles contract?
semilunar valves
sinoatrial node
atrioventricular node
tricuspid and bicuspid valves
The purpose of the four valves of heart is to ___________________.
control the rate of blood flow
ensure one-way blood flow
keep the blood in the correct chamber
maintain blood pressure
generate rhythmic contractions
In the clinical setting, blood pressure refers to _________________.
lymphatic pressure
arterial pressure
osmotic pressure
venous pressure
intracardiac pressure
The _______________ have walls that are one cell thick.
arterioles
arteries
veins
venules
capillaries
Which of the following are blood vessels that contain valves to prevent backflow of blood?
arterioles
arteries
veins
capillaries
What does the Circulatory/Cardiovascular system do?
Distributes only blood
Helps an animals body digest food
Distributes blood, oxygen and nutrients around the body
Gives an animal's body structure and mobility
Why is the muscle on the left side of the heart bigger?
That side of the heart is bigger
Because it has to pump blood to the rest of the body
Because it has to pump blood to the lungs
It should not be thicker, that's a sign of heart disease
What is the Aorta?
Main artery in the body, supplying oxygenated blood
It pumps blood into the right atrium
Main vein that pumps blood into the heart
It connects the heart to the lungs
Why does blood turn dark red as it circulates through the body?
It starts to clot
It gets old and dirty flowing through the body
The oxygen in it is replaced with carbon dioxide and it becomes more deoxygenated
The further blood is from the heart, the more dark red it is due to hydrostatic pressure
How many liters of blood circulate through out the average human body?
1-2 litres
3-4 litres
4-5 litres
8-9 litres
