MEDICAL
HEART AND PERICARDIUM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Support
|
|
|
Insulation
|
|
|
prevents valves from stretching
|
|
|
Makes the heart rigid.
|
Detailed explanation-1: -The rings give attachment for the myocardium of both the ventricles and atria, and provides support for the valves themselves, preventing them from stretching.
Detailed explanation-2: -The fibrous skeleton of the heart acts as an insulator for the flow of electrical current across the heart. It stops the flow of electricity between the different chambers of the heart so that electrical impulses do not flow directly between the atria and ventricles.
Detailed explanation-3: -The cusps of the valves of the heart are held in position by the fibrous cords called ‘chordae tendineae’. The chordae tendineae ensure that the cusps of flaps of the valves do not invert into the atria. Thus, unidirectional flow of blood from the atria to the ventricles is maintained. 03-Jul-2022