Question

The auriculo-ventricular valves need to close to prevent backflow. But the
ventricular pumping is so forceful that these valves need additional support
to withstand this force.
This support is provided by some special ten are those tendons ?
a) Purkinje fibres b) chordae tendineze
c) Achilles tendons d) epicardium.
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Answer 1

Answer:

Purkinje fibres is the support to withstand this force.

Answer 2

Supporting tendon for given function is - b) chordae tendineae

Heart is the organ found in our thoracic cavity serving the function of pumping blood to different organs of the body. Valves seperate auricles and ventricles.

Chordae tendineae are string like fibres found in heart which connect papillary muscles with valves. The function done by them is to hold the valves open during flow of blood.

Purkinje fibres generally work to maintain the cardiac rhythm or synchronized contractions.

Epicardium is the outermost layer of heart.

Achilles tendon find their location in foot. It serves function to transmit power from calf muscles to the heel and foot.