blood

Erythropoietin (EPO) stimulates the developmental process shown here. What part of the body does erythropoietin (EPO) target to increase erythropoiesis?

• bone marrow

• kidneys

• lungs

• liver

Tags

NGSS.HS-LS1-3

Which body activity would be most affected if a patient lacked an adequate number of erythrocytes (anemia)? ​ (a)  

• Oxygen transport
• clotting
• hormone transport
• immune response

What protein involved in coagulation provides the activation for the final step in clotting?

• fibrinogen

• fibrin

• thrombin

• prothrombin activator

Answer explanation

Thrombin catalyzes the conversion of fibrinogen into fibrin. This is the final step in coagulation.

How many oxygen molecules can be transported by one hemoglobin molecule?

• 4

• 8

• 2

• 6

Which of the following is NOT a formed element in whole blood?

• erythrocytes

• Albumin

• leukocytes

• platelets

Answer explanation

Albumin is a protein that is found in the plasma.

Which of the following CANNOT diffuse across a capillary wall to or from the surrounding interstitial fluid?​ (a)  

• proteins
• oxygen and carbon dioxide
• monosaccharides and amino acids
• lipid-soluble substances

Which statement best describes arteries?

• All carry oxygenated blood to the heart.

• All carry blood away from the heart.

• Only large arteries are lined with endothelium.

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• All contain valves to prevent the backflow of blood.

Which of the following is true regarding veins?

• Veins carry blood away from the heart, while arteries carry blood to the heart.

• Veins have smaller-diameter lumens compared to arteries.

• Veins have valves; arteries do not.

• Veins are more muscular than arteries.

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Pectinate muscles are found in the ​ (a)   .

• atria only
• ventricles only
• atria and ventricles
• right atrium and right ventricle only

The atrioventricular (AV) valves are closed

• when the ventricles are in systole

• when the ventricles are in diastole

• by the movement of blood from atria to ventricles

• while the atria are contracting