MCQs of Physiology – Muscles and Neuromusclar Junction

Calcium ions triggers muscle contraction by binding to :

The contractile element in a skeletal muscle is present in:

Contractile element in myofibril is:

Skeletal muscles :

The following electrodes are used to detect the muscle activity without pain:

Electromyography is used for:

The study of the electrical activity of the muscle is:

The skeletal muscle action potential:

In an isotonic contraction of the muscle:

Rigor mortis results after death is due to

Tendon ( or) ligament is attached to a bone through :

All are features of skeletal muscle except:

In myasthenia gravis

In excitable cells, repolarization is closely associated with, one of the following events:

The neuromuscular transmitter released at neuromuscular junction is:

Potassium is maximum in:

A motor unit is made up of:

The end plate potential is characterized by:

Non true regarding Na/K pump is

Which is caused by acetylcholine through nicotinic receptors:

Succinyl choline acts to block neuromuscular transmission by:

In smooth muscle there is:

The number of muscle fibers in a motor unit are least in

Which one of the following is a regulatory protein of the muscle?

Increase in threshold level on applying subthreshold, slowly rising stimulus is known as :

Skeletal muscles

The absolute refractory period of an action potential is due to :

Cardiac muscle contracts due to

Two major types of muscle fibres are found in humans

The main types of muscle cells are

Upstroke of action potential would lead to

Small packets of acetylcholine released randomly from the nerve cell membrane at rest Produces