The effects of stimulation of cholinergic vagal fibers on the pacemaker potential of the cells of sinoatrial (SA) node of heart and on the nodal impulse generation are suggested below: […]
Tag: CSIR NET Life Science Previous Year Questions and Solution on Cardiovascular System
Tag: CSIR NET Life Science Previous Year Questions and Solution on Cardiovascular System
CSIR NET Life Science Previous Year Questions and Solution on Cardiovascular System
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CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
How Vagus Nerve Inhibits SA Node: Mechanisms of Pacemaker Cell Regulation Explained
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- September 6, 2025
- 2 Comments
The pacemaker cells of sinoatrial node (SA node) are inhibited by the stimulation of vagus nerve. The probable mechanisms of this inhibition are stated as follows: A. The acetylcholine-regulated K+ […]
CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
Ion Channels Involved in Pacemaker Potential of the Heart: What You Need to Know
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- September 6, 2025
- 3 Comments
4. Which one of the following is NOT involved with the pacemaker potential of heart? (1) “h”- channel (2) Transient calcium channel (3) Long-lasting calcium channel (4) “f”-channel The […]
CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
Bundle of His Explained: True Facts About Electrical Conduction and Infra-Hisian Heart Block
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- September 6, 2025
- 5 Comments
A cardiac patient was admitted to the hospital after a heart block was detected, specifically ‘infra-Hisian block’. The doctors identified the problem in the bundle of His. Which one of […]
CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
Identifying Blood Vessels: Why Thick Walls and Valves Distinguish Arteries and Veins
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- September 6, 2025
- 6 Comments
Blood vessel A has thick wall, narrow lumen and no valves while blood vessel B has thin wall, wide lumen and have valves. Here A and B are (1) A […]
CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
Differences Between Arteries and Veins: Valves, Blood Flow, and Wall Structure Explained
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- September 6, 2025
- 5 Comments
Which statement is correct regarding arteries and veins? (1) Arteries has no valve while veins has bicuspid valves (2) There is no difference (3) Arteries carry deoxygenate blood and has […]
