- Deficiency of which ion causes cardiac faccidity?
Calcium ions
- Why is conduction slow in AV node?
Due to less number of gap junctions between successive cells in the conducting pathway.
- What is the benefit of fast impulse conduction in Purkinje system?
Instantaneous transmission of impulse throughout the ventricles
- What prevents the action potential to travel backwards from the ventricle to atria?
One way conduction through the AV bundle.
- What makes the synchronous constraction of ventricles?
Purkinje system of conducting system.
- Injury to the heart causes the heart to remain partially depolarizes all the time, what is it called?
Current of injury
- What is the percent of blood volume that is present in systemic circulation at rest in adults?
84%
- Which portion of the circulatory tree contains the lowest blood volume at rest?
Capillaries
During blood flow, when the velocity of flow in the centre of the vessel is greater than toward the outer edges, what is it called?
Laminar flow
- For occurrence of turbulent flow in a blood vessel, what should be range of Reynold’s number value?
2000 - 4000
(Physiology; UMS 2008)
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