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WorksheetsHS1 Circulatory System
Total questions: 52
Worksheet time: 28mins
Explain how the blood circulates through the heart to the body.
The blood enters the right atrium, moves to the right ventricle, goes to the lungs, returns to the left atrium, moves to the left ventricle, and is pumped to the body.
The blood enters the left atrium, moves to the left ventricle, goes to the lungs, returns to the right atrium, moves to the right ventricle, and is pumped to the body.
The blood circulates only in the lungs before reaching the body.
The blood moves directly from the right atrium to the body without passing through the lungs.
The electrical pathway of the heart is:
SA node → AV node → Bundle of His → Purkinje fibers
AV node → SA node → Purkinje fibers → Bundle of His
Purkinje fibers → Bundle of His → AV node → SA node
Bundle of His → SA node → AV node → Purkinje fibers
Capillaries are so small that RBCs travel through them single-file.
True
False
Which of the following is NOT one of the three main components of the circulatory system?
Blood
Blood Vessels
Lungs
Heart
Which of the following is NOT a type of blood vessel?
Arteries
Veins
Capillaries
Platelets
Blood vessels include arteries, veins, and ________.
capillaries
cartilage
alveoli
neurons
What is one of the main functions of blood?
It nourishes the cells by bringing oxygen to them
It produces hormones
It digests food
It stores fat
Blood carries away which of the following waste products?
Oxygen and nutrients
Carbon dioxide and dead cells
Vitamins and minerals
Water and salt
"Blood brings "food" AKA _______ to the cells."
oxygen
carbon dioxide
glucose
water
What are RBCs also known as?
erythrocytes
leukocytes
thrombocytes
plasma
What are WBCs also known as?
leukocytes
erythrocytes
platelets
plasma
What are platelets also known as?
thrombocytes
erythrocytes
leukocytes
plasma
What is the liquid portion of blood called?
plasma
serum
hemoglobin
platelets
What is the main function of RBCs?
Carry oxygen
Digest food
Transmit nerve impulses
Produce hormones
What is the main function of WBCs?
Carry nutrients
Carry C02 to the body
Help clot blood
What is the main function of platelets?
Causes blood to clot, which prevents excessive bleeding
Transports oxygen throughout the body
Fights off infections by producing antibodies
Regulates body temperature
What is the main function of plasma?
Carries nutrients, hormones, and proteins
Produces red blood cells
Regulates body temperature
Fights against viruses
Which type of blood vessel carries blood AWAY from the heart?
Arteries
Veins
Capillaries
Which type of blood vessel is depicted as red on diagrams?
Arteries
Veins
Capillaries
Which type of blood vessel carries oxygenated blood (with one exception)?
Arteries
Veins
Capillaries
Which type of blood vessel carries blood TOWARDS the heart?
Arteries
Veins
Capillaries
Which type of blood vessel is depicted as blue on diagrams?
Arteries
Veins
Capillaries
Which type of blood vessel carries deoxygenated blood (with one exception)?
Arteries
Veins
Capillaries
Which type of blood vessel connects arteries and veins?
Arteries
Veins
Capillaries
Which type of blood vessel has very thin walls that allow O2 & CO2 to pass through?
Arteries
Veins
Capillaries
Capillaries are depicted as ______ on diagrams (air exchange).
red AND blue
green
yellow
purple
Observe the image of the five syringes filled with different shades and consistencies of red liquid. Which of the following best explains the difference in appearance among the syringes?
Different types of blood samples (arterial vs venous)
Different levels of oxygenation in the blood
Different types of medication
Different volumes of liquid
The heart is the main organ of the ________ system.
circulatory
digestive
respiratory
nervous
Fill in the blank: The heart is approximately the size of your ________.
fist
foot
head
knee
The outside of the heart is primarily ________.
muscle
bone
fat
skin
The ________ is a double membrane that lines the outside of the heart.
Pericardium
Endocardium
Myocardium
Epicardium
The ________ is the thickest layer and is made of muscle.
Myocardium
Endocardium
Pericardium
Epicardium
The ________ is the smooth inside lining of the heart.
Endocardium
Myocardium
Epicardium
Pericardium
What does the septum do in the heart?
Divides the heart into four parts
Divides the heart into the right and left sides
Pumps blood
Connects the atrium and ventricle
How many parts is the heart divided into?
Two
Three
Four
Five
The two upper chambers of the heart are known as the _______.
atrium
ventricle
septum
valve
The two lower chambers of the heart are known as the _______.
ventricles
atria
valves
septum
Which chamber of the heart receives oxygen-poor blood from the body?
Right Atrium
Left Atrium
Right Ventricle
Left Ventricle
Match the following heart parts with their correct function:
Pulmonary Artery
Carries oxygenated blood from the lungs to the heart
Pulmonary Vein
Carries oxygen-poor blood from the heart to the lungs
Aorta
Carries oxygenated blood from the heart to the body
Name the valve located between the right atrium and the right ventricle.
Tricuspid Valve
Mitral Valve
Aortic Valve
Pulmonary Valve
The left ventricle pumps blood into the aorta.
True
False
How many valves are there in the heart?
4
2
5
6
Which of the following is NOT a valve found in the heart?
Tricuspid valve
Pulmonary valve
Mitral valve
Carotid valve
Valves keep blood flowing in the correct direction and ______ backflow from happening.
prevent
allow
increase
encourage
Which valve is located between the left atrium and the left ventricle?
Mitral Valve
Aortic Valve
Pulmonary Valve
Tricuspid Valve
Which valve prevents blood from flowing back into the left ventricle from the aorta?
Mitral Valve
Aortic Valve
Pulmonary Valve
Tricuspid Valve
Match the following heart valves to their correct positions:
Between left atrium and left ventricle
Mitral Valve
Between right ventricle and pulmonary artery
Aortic Valve
Between left ventricle and aorta
Pulmonary Valve
Between right atrium and right ventricle
Tricuspid Valve
The valve located between the right atrium and the right ventricle is called the _________.
Tricuspid Valve
Mitral Valve
Aortic Valve
Pulmonary Valve
Inside the HEART: The four major vessels in the heart are Superior & Inferior Vena Cava, Pulmonary Artery, Pulmonary Vein, and _____.
Aorta
Carotid Artery
Femoral Vein
Jugular Vein
Which vessel carries deoxygenated blood from the body to the heart?
Pulmonary Vein
Aorta
Superior & Inferior Vena Cava
Pulmonary Artery
Which number is the superior vena cava?
1
2
10
13
Select the artery that pumps red blood cells carrying carbon dioxide into the lungs.
