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WorksheetsLayers of the Heart
Total questions: 14
Worksheet time: 12mins
The heart is a ______, muscular organ about the size of a ______ located between the ______.
The heart is a muscular organ about the size of a fist located between the lungs.
The heart is a hollow organ about the size of a grapefruit located between the kidneys.
The heart is a solid organ about the size of a hand located between the ribs.
The heart is a fragile organ about the size of a thumb located between the shoulders.
How many times does the heart contract per minute?
What is the outermost layer of the heart known as?
Myocardium
Endocardium
Epicardium
Which valve is located on the right side between the atria and ventricles?
Bicuspid valve
Tricuspid valve
Aortic valve
Pulmonary valve
Which veins are responsible for carrying blood to the left atrium?
What separates the right and left sides of the heart?
Valves
Septum
Atria
Vessels
Valves also regulate blood flow between the ventricles and the blood _______.
vessels
cells
tissues
organs
The role of the intrinsic conduction system in the heart is to:
pump blood throughout the body
regulate the heart rate and rhythm
filter blood
supply oxygen to the heart muscle
Fill in the blank: Diastole is the _______ of the heart and filling with blood.
relaxation
contraction
pumping
beating
What occurs during the ejection phase of systole?
The ventricles contract and pump blood into the aorta and pulmonary artery.
The atria contract and fill the ventricles with blood.
The heart relaxes and fills with blood from the veins.
The semilunar valves close to prevent backflow into the heart.
What is stroke volume? Fill in the blank: Stroke volume is the volume of blood pumped out by a ventricle in a _______.
a heartbeat
a minute
an hour
a day
What effect does rapid blood loss have on stroke volume?
It decreases stroke volume.
It increases stroke volume.
It has no effect on stroke volume.
It stabilizes stroke volume.
Which hormones increase heart rate?
Adrenaline
Insulin
Glucagon
Oxytocin
What are the two phases of the heart's rhythmic cycle?
Diastole and Systole
Contraction and Relaxation
Stroke Volume and Heart Rate
Intrinsic and Extrinsic
