WorksheetsCh. 9 Cardiovascular System pg. 98-99 2025-26
Total questions: 16
Worksheet time: 13mins
Hemoglobin is a substance in RBCs that carries oxygen and gives blood its red color.
True
False
These types of blood cells protect the body against infection.
Nerve Cells
Erythrocytes
Leukocytes
Thrombocytes
Which component of blood is primarily responsible for clotting?
Erythrocytes
Plasma
Thrombocytes
Leukocytes
Match the following layers of the heart with their correct name:
Pericardium
outer layer -thin sac covering the heart
Myocardium
second layer; thick, muscular layer
Endocardium
Inner layer-lines inner surface of heart
These upper chambers receive blood
Arteries
Atria
Ventricles
Veins
Lower chambers that pump blood
Atria
Veins
Ventricles
Arteries
How many chambers are there in the heart:
2
4
6
8
This chamber receives blood from the lungs
Right Ventricle
Left Atrium
Left Ventricle
Right Atrium
This chamber receives blood from body tissues
Left Atrium
Right Atrium
Left Ventricle
Right Ventricle
This chamber pumps blood to the lungs for O2
Right Ventricle
Left Ventricle
Right Atrium
Left Atrium
This chamber pumps blood to all parts of the body.
Right Atrium
Left Atrium
Right Ventricle
Left Ventricle
Match the following terms:
Resting phase where the heart chambers fill with blood
Diastole
Working phase where the heart contracts and blood is pumped through the vessels
Systole
Blood vessels that carry blood AWAY from the heart
Arteries
Blood vessels that return blood to the heart
Veins
Very tiny blood vessels that pick up waste products from the cells
Capillaries
These are tiny blood vessels where the cells and the blood exchange nutrients, oxygen and waste.
capillaries
arteries
veins
