131. In connection with circulatory system valves are present
A. Not only in heart and blood vessels of vertebertebrates and invertebrates, but in vertebrate lymphatics as well
B. In vertebrates heart only
C. In both vertrate and invertebrate hearts
D. In both vertebrate and invertebrate hearts and their blood vessels as well
Answer: A
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132. If due to some injury the chordae tendineae of the tricuspid valve of the human heart is partially non-functional, what will be the immediate effect ?
A. The pacemaker will stop working
B. The blood will tend to flow back into the left atrium.
C. The flow of blood into the arota will be slowed down.
D. The flow of blood into the pumonary artery will be reduced.
Answer: D
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133. Fastest distribution of some injectible meterial medicine and with no risk of any kind can be achieved by injecting it into the
A. Muscles
B. Arteries
C. Veins
D. Lymph vessels
Answer: C
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134. Which statement is true about the venous blood vessels of frog?
A. Lingual and submandibular unite to from internal jugular.
B. Musculo-cutaneous and brachial unite to from the subclavian.
C. The ventral abdominal vein drains into the posterior vena cava.
D. The pelvic veins unite to from the renal portal vein.
Answer: C
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135. Which of the following statements is
wrong about the closed circulatory system?
A. Blood remains within blood vessels and never comes in direct connect with the body cells.
B. In it flow of fluid can be more precisely regulated.
C. There is no blood capillary.
D. Blood flow is more rapid due to higher
pressure.
Answer: C
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136. Incomplete double circulation is found in
which of the following animals?
A. Birds
B. Mammals
C. Birds and mammals
D. Amphibians and reptiles
Answer: D
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137. Which of the following is correct about
human heart ?
A. The volume of both atria gt the volume of both ven-tricles
B. The volume of both ventricle gt the volume of both atria
C. The volume of atria = the volume of both ventricles
D. Ventricles are upper chambers and atria are lower chambers in our heart
Answer: B
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138. Hepatic portal system carries
A. Oxygenated blood from liver to intestine
B. Deoxygenated blood from liver to intestine
C. Oxygenated blood from intestine to liver
D. Deoxygenated blood from intestine to liver
Answer: D
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139. The cardiac cycle includes all of the following events EXCEPT
A. The closing and opening of the heart valves during each heartbeat.
B. The movement of impulse from the SA node to all regions of the heart wall.
C. The number of time the heart beats in one minute.
D. The changes in blood volume in all chambers of the heart.
Answer: C
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140. Erythropoiesis is associated with
i. Spleen
ii. Red bone marrow
iii. Kidney
iv. Liver
A. i and ii only
B. ii and iv only
C. i and iv only
D. i, ii, iii and iv
Answer: D
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