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WorksheetsCardio TEST 1
Total questions: 25
Worksheet time: 13mins
What is the primary function of the heart?
To pump blood through blood vessels to all body cells
To filter blood
To produce blood cells
To store oxygen
What is the protective sac that covers the heart called?
Myocardium
Pericardium
Endocardium
Epicardium
How many layers does the pericardium have?
One
Two
Three
Four
What is the role of veins in the circulatory system?
Carry blood away from the heart
Carry blood to the heart
Cause the heart to contract
Control blood flow direction
What is the role of coronary arteries in the heart?
To pump blood to the lungs
To create circulation of blood within the heart muscle
To filter blood
To store oxygen
Which organ requires the most oxygen?
Lungs
Brain
Heart
Liver
What is the function of pulmonary arteries in the circulatory system?
Carry oxygen-rich blood to the heart
Carry blood low in oxygen to the lungs
Carry nutrients to the body
Carry carbon dioxide to the heart
Which part of the heart receives oxygen-poor blood from the body?
Left atrium
Right atrium
Left ventricle
Right ventricle
Which valve is located between the right atrium and right ventricle?
Bicuspid valve
Aortic valve
Tricuspid valve
Pulmonary valve
Which chamber of the heart pumps oxygen-rich blood into the aorta?
Right atrium
Left atrium
Right ventricle
Left ventricle
What causes blood to travel through the body in a surge?
Gravity
Heart contractions
Muscle movements
Breathing
As blood leaves the heart, what happens to the diameter of blood vessels?
They become larger
They remain the same
They become smaller
They disappear
What is the function of capillaries in the circulatory system?
To pump blood
To store blood
To serve as a transfer station between arteries and veins
To filter blood
What is the role of the sinoatrial node in the heart?
It acts as the pacemaker.
It pumps blood to the lungs.
It filters blood.
It stores oxygen.
Which part of the heart's conduction system is responsible for transmitting impulses to the ventricles?
Sinoatrial node
Atrioventricular node
Bundle of His
Purkinje Fibers
What is the primary function of the atrioventricular node?
Initiate heartbeat
Delay impulse transmission
Pump blood
Store oxygen
Which of the following is a unique structure in fetal circulation?
Aorta
Foramen ovale
Pulmonary vein
Left ventricle
Which structure in fetal circulation connects the pulmonary artery to the aorta?
Ductus venosus
Ductus arteriosus
Foramen ovale
Umbilical vein
Which of the following is NOT a factor affecting heart rate?
Physical activity
Emotions
Health status
Hair color
Which of the following is a part of the cardiac cycle?
Only contraction
Only relaxation
Contraction and relaxation
Neither contraction nor relaxation
Label the left and right side of the heart.
What are the four chambers of the heart?
Arteries carry blood TOWARD the heart while the veins carry blood AWAY from the heart.
TRUE
FALSE
How many arteries does the fetal umbilical cord have?
6
2
1
3
The Umbilical cord has only (a) Vein
