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Q. No.In a closed circulatory system, blood is completely enclosed within
1. the skeleton.
2. sinuses.
3. vessels.
4. hearts.
Subtopic: Circulatory Pathways |
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The exchange of materials between blood and interstitial fluid occurs only at the
1. veins.
2. capillaries.
3. arteries.
4. arterioles.
1. veins.
2. capillaries.
3. arteries.
4. arterioles.
Subtopic: Lymph |
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Which chamber of a bird heart does oxygen-rich blood first enter?
1. Right atrium
2. Left atrium
3. Right ventricle
4. Left ventricle
1. Right atrium
2. Left atrium
3. Right ventricle
4. Left ventricle
Subtopic: Circulatory Pathways |
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Blood travels from the heart to the lungs by way of the
| 1. | superior (or anterior) vena cava. |
| 2. | inferior (or posterior) vena cava. |
| 3. | pulmonary artery. |
| 4. | pulmonary vein. |
Subtopic: Human Heart: Double Circulation |
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The sinoatrial node, which generates the electrical impulses that coordinate heart-muscle contractions, is located in the
1. medulla oblongata.
2. inferior (or posterior) vena cava.
3. right atrium.
4. left ventricle.
1. medulla oblongata.
2. inferior (or posterior) vena cava.
3. right atrium.
4. left ventricle.
Subtopic: Circulatory Pathways |
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About how much blood is in the circulatory system of an average person?
1. 1 liter
2. 2 liters
3. 5 liters
4. 10 liters
1. 1 liter
2. 2 liters
3. 5 liters
4. 10 liters
Subtopic: Human Heart: Cardiac Cycle |
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Both erythrocytes and leukocytes form in the
| 1. | bone marrow. | 2. | thymus. |
| 3. | arterial walls. | 4. | lymph nodes. |
Subtopic: Blood: General Description & RBC |
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What happens to a person who receives the wrong type of blood?
| 1. | All the arteries dilate. |
| 2. | All the arteries constrict. |
| 3. | The red blood cells agglutinate. |
| 4. | The spleen and lymph nodes deteriorate. |
Subtopic: Blood: General Description & RBC |
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The heart rate is slowed by
| 1. | sympathetic nerves |
| 2. | parasympathetic nerves |
| 3. | corpus callosum |
| 4. | both sympathetic and parasympathetic nerves |
Subtopic: Regulation of Cardiac Activity |
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Which of the following are most closely associated with oxygen transport?
| 1. | red blood cells | 2. | platelets |
| 3. | neutrophils | 4. | basophils |
Subtopic: Blood: General Description & RBC |
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