Human Muscular System
Human Muscular System: Overview
This topic covers concepts such as Mechanism of Muscle Contraction, Muscle Fibre, Sarcomere, Myoglobin, Sarcosome, White Muscle, Properties of Muscles on Electrical Impulses, Red Muscle Fibres, Cori Cycle, Muscular System in Human, etc.
Important Questions on Human Muscular System
Write the difference between actin and myosin

Distinguish between red muscle fibres and white muscle fibres.

The organelle involved in the release of calcium ions when an action potential reaches the muscle cell is Golgi apparatus.

The initiation of muscle contraction does not require the involvement of neurotransmitters.

Which ions are released from the sarcoplasmic reticulum after being stimulated by the action potential travelled through the neuron?

How do muscles react to the electrical impulses?

In Cori cycle, lactic acid is produced in

The Cori cycle takes place in


In a motor unit, different types of muscle fibres are present.

A motor unit consists of a single motor neuron with multiple muscle fibres.



The function of sarcosomes is the biosynthesis of lipids.

Sarcosomes are specialised endoplasmic reticulum of a striated muscle fibre.

Sarcosomes are large specialised

Define sarcosome. What are their functions?

Which of the following substances are absent and present in smooth muscle cells?

When the muscle fibres get excited, the triad allows releasing of ions.

In muscle contraction, this ion is essential:
