Unit VI Blood and Heart

Multiple Choice

What is the function of the pulmonary valve?

• Prevents backflow into the right ventricle

• Prevents backflow into the left ventricle

• Prevents backflow into the right atrium

• Prevents backflow into the left atrium

Multiple Choice

Which structure separates the left and right sides of the heart?

• Interventricular septum

• Aortic arch

• Pulmonary veins

• Chordae tendineae

Multiple Choice

What is the role of the left atrium?

• Receives deoxygenated blood from the body

• Receives oxygenated blood from the lungs

• Pumps blood to the lungs

• Pumps blood to the body

Multiple Choice

What is the top layer in a centrifuged blood sample?

• Red blood cells

• Buffy coat

• Liquid (plasma)

• Platelets

Multiple Choice

What is the function of albumins in the blood?

• Help blood clot

• Retain water by osmosis

• Protect from infections

• Transport oxygen

Multiple Choice

What are the three main types of formed elements in blood?

• Red Blood Cells, White Blood Cells, Platelets

• Plasma, Serum, Hemoglobin

• Neurons, Glial Cells, Axons

• Enzymes, Hormones, Antibodies

Multiple Choice

What is the name given to the complex formed when an oxygen molecule binds with hemoglobin?

• Carboxyhemoglobin

• Oxyhemoglobin

• Methemoglobin

• Deoxyhemoglobin

Multiple Choice

Which antibodies are present in Type B blood?

• Type A antibodies

• Type B antibodies

• Both A and B antibodies

• No antibodies

Multiple Choice

What is the main function of antibodies?

• To produce antigens

• To clump antigens together

• To destroy red blood cells

• To increase blood pressure

Multiple Choice

What does it mean if a blood type is Rh+?

• It is negative for the Rh antigen.

• It is positive for the Rh antigen.

• It carries only type A antigens.

• It carries only type B antigens.

Multiple Choice

What is the normal location for Rh antigens?

• Plasma

• White blood cells

• Red blood cells

• Platelets

Multiple Choice

What is the significance of Rh antigens in blood transfusions?

• They are irrelevant to blood transfusions.

• They determine compatibility between donor and recipient.

• They only affect plasma transfusions.

• They are only important for type O blood.

Multiple Choice

What is the primary component of red blood cells that is absent in white blood cells?

• Nucleus

• Hemoglobin

• DNA

• RNA

Multiple Choice

Which type of WBC is considered a weak phagocyte?

• Neutrophils

• Eosinophils

• Basophils

• Lymphocytes

Multiple Choice

What does fibrin form to help close a break?

• A liquid

• A gel

• A tangle of threads

• A solid block