Assertion (A) | Neural signals through the sympathetic nerves (part of ANS) can increase the cardiac output. |
Reason (R): | Neural signals through the sympathetic nerves can increase the rate of heart beat and the strength of ventricular contraction. |
1. | Both (A) and (R) are True and (R) correctly explains (A). |
2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |
1. | Neutrophils | 60 – 65 % |
2. | Eosinophils | 2 – 3 % |
3. | Monocytes | 6 – 8 % |
4. | Basophils | 20 – 25 % |
Statement I: | ABO grouping is based on the presence or absence of three surface antigens on the RBCs namely A, B and O. |
Statement II: | Rh grouping is based on the presence or absence of the type of antibody present in the plasma. |
1. | Statement I is correct; Statement II is correct |
2. | Statement I is incorrect; Statement II is incorrect |
3. | Statement I is incorrect; Statement II is correct |
4. | Statement I is correct; Statement II is incorrect |
I: | allow the flow of blood from ventricles to the pulmonary artery or aorta. |
II: | prevent any backward flow of blood from the pulmonary artery or aorta into the ventricles. |
1. | in the right upper corner of the right atrium. |
2. | in the lower left corner of the right atrium close to the atrio-ventricular septum. |
3. | in the lower right corner of the left atrium close to the atrio-ventricular septum. |
4. | in the interventricular septum |
Layer in the wall of artery/vein | Made up of | |
I: | Tunica intima | Squamous epithelium |
II: | Tunica media | Skeletal muscle/elastic fibres |
III: | Tunica externa | Fibrous connective tissue |