MUSCLE PHYSIOLOGY

Detailed explanation-1: -Contractility is the ability of muscle cells to forcefully shorten. Contractility allows muscle tissue to pull on its attachment points and shorten with force. ( muscles can only pull, never push.) Excitability is the ability to respond to a stimulus, which may be delivered from a motor neuron or a hormone.

Detailed explanation-2: -Contractility refers to the capacity of muscle to contract or shorten forcefully. Muscles can be stretched to their normal resting length and beyond to a limited degree. This is because of extensibility. If muscles are stretched, they recoil to their original resting length because of its elasticity.

Detailed explanation-3: -In a concentric contraction, the force generated by the muscle is less than the muscle’s maximum, and the muscle begins to shorten. This type of contraction is widely known as muscle contraction.

Detailed explanation-4: -Contractility – the ability to shorten (forcibly) when an adequate stimulus is received. Nerve stimulus and action potential – one motor neuron may stimulate a few muscle cells or hundreds of them, depending on the particular muscle and the work it does (gross motor vs. fine motor)