Cardiovascular System: Blood

What is the main function of red blood cells in the cardiovascular system?

• To fight infections

• To transport oxygen

• To clot blood

• To regulate blood pressure

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NGSS.MS-LS1-3

Which component of blood is primarily responsible for clotting?

• Red Blood Cells

• White Blood Cells

• Platelets

• Plasma

What determines if your blood type is positive or negative?

• Platelets

• Blood color
• Rh factor

• Genetics

Blood is the body's only _____ tissue.

• connective

• fluid

• red

• cardiovascular

What are the formed elements of blood?

• Plasma, hemoglobin, and fibrinogen
• Erythrocytes, leukocytes, and thrombocytes
• Hemoglobin, plasma, and fibrin
• Red blood cells, white blood cells, and platelets

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NGSS.MS-LS1-3

What is hematocrit?

• Hematocrit is the number of platelets in the blood.
• Hematocrit is the percentage of red blood cells out of the total blood volume.

• Hematocrit is the percentage of white blood cells in the blood.
• Hematocrit is the volume of plasma in the blood.

Which of these does blood NOT transport?

• Oxygen from the lungs and nutrients from the digestive tract

• Metabolic wastes from cells to the lungs and kidneys for elimination

• Hormones from endocrine glands to target organs

• None of the above

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NGSS.MS-LS2-3

Which of these does blood NOT maintain?

• Body temperature
• fluid volume

• adequate pH

• Brain function

Which of the following components of blood makes up the smallest percentage by volume?

• plasma

• erythrocytes

• leukocytes & thrombocytes

Blood prevents infection by:

• Red blood cells and platelets
• Plasma and hemoglobin
• Lymphocytes and antibodies
• White blood cells and antibodies