Blood Components and Functions Quiz

What is the primary function of red blood cells?

Which component of blood makes up the largest percentage by volume?

What is the role of white blood cells in the immune response?

How do platelets contribute to wound healing?

Which statement about plasma is FALSE?

Which type of white blood cell is primarily responsible for engulfing pathogens?

What triggers the process of wound healing?

What is the primary function of lymphocytes in blood?

What occurs first in the blood clotting process after a wound is sustained?

Which process involves platelets and damaged cells working together?

What is fibrinogen's role in blood clot formation?

What is the outcome of fibrin creating a net across a wound?

What happens after a blood clot forms over a wound?

What tissue types are primarily involved in the structure of the heart?

Which part of the heart is responsible for receiving deoxygenated blood?

Which vessels specifically carry oxygenated blood away from the heart?

Blood Components and Functions

Plasma: Makes up about 55% of blood, a yellowish liquid mainly composed of water. It dissolves and transports glucose, amino acids, fats, waste products, proteins, hormones, vitamins, and antibodies.
Red Blood Cells: Account for about 44% of blood volume. They are red, disc-shaped, and lack a nucleus. Hemoglobin, containing iron, allows them to carry oxygen bound to iron molecules.
White Blood Cells: Less than 1% of blood. They are irregular shaped and lack a nucleus. They destroy germs and damaged cells. Types include phagocytes and lymphocytes.
Phagocytes: Destroy germs and break down dead body cells. They leave capillaries and consume germs or damaged cells.
Lymphocytes: Fight germs and toxins. These produce specific antibodies. Antibodies can directly destroy germs or cause them to clump together for phagocytosis.

Wound Closing Process

Blood vessels are damaged and blood flows out.
The damaged vessel walls contract to reduce bleeding.
Platelets form a patch over the wound edges.
Platelets and damaged cells release clotting factors.
Fibrinogen (protein) turns to fibrin fiber.
Fibrin forms a net, containing blood cells and platelets.
The resulting clot hardens to become a scab.
New skin layer grows beneath the scab. The scab detaches after several days.

Heart Anatomy

The heart has four chambers: two atria and two ventricles.
Tissues include muscle, fat, blood vessels, nerves, and connective tissue.

Test your knowledge on blood components and their functions, including plasma, red blood cells, white blood cells, and the wound-closing process. This quiz will help you understand the critical roles each component plays in the body. Perfect for biology students or anyone interested in human anatomy!