A. | RBCs are devoid of nucleus in most of the mammals and are biconvex in shape. |
B. | Lymph has the same mineral distribution as that in plasma. |
C. | By counting the number of QRS complexes in ECG that occur in a given time period, one can determine the heartbeat rate of an individual. |
D. | Heart is an endodermally derived organ. |
Column I | Column II | ||
(a) | Eosinophils | (i) | 60-65% |
(b) | Monocytes | (ii) | 0.5-1% |
(c) | Basophils | (iii) | 6-8% |
(d) | Neutrophils | (iv) | 2-3% |
(a) | (b) | (c) | (d) | |
1. | (iii) | (iv) | (ii) | (i) |
2. | (i) | (ii) | (iii) | (iv) |
3. | (iv) | (iii) | (ii) | (i) |
4. | (iv) | (iii) | (i) | (ii) |
(a) | Congestion of lungs is one of the main symptoms of heart failure. |
(b) | Each vein has an inner lining of cuboidal endothelium, called tunica intima. |
(c) | The cardiac output of an athlete will be much lower than that of an ordinary man. |
(a) | The systemic circulation provides nutrients, CO2, and other essential substances to the tissues and takes O2 and other harmful substances away for elimination. |
(b) | Heart of both humans and cockroach is myogenic. |
(c) | Intestinal juice along with pancreatic juice is known as succus entericus. |
(d) | The SAN can generate the maximum number of action potentials, i.e., 70-75 min–1 |
Column-I | Column-II | ||
a. | Atherosclerosis | (i) | Liver is affected |
b. | Angina | (ii) | Feeling of nausea |
c. | Jaundice | (iii) | Acute chest pain |
d. | Vomiting | (iv) | Deposition of calcium, cholesterol, etc in arteries |
(a) | The volume of blood pumped out by the right and left ventricles is the same during each cardiac cycle. |
(b) | A person whose blood group is O has both A and B antigens on his/her RBCs. |
(c) | Blood normally contains 15,000-35,000 platelets mm-3 of blood. |