Muscular tissues MCQ - Practice Questions with Answers

• Muscular tissue includes all the muscles of the body 
• Muscles are made up of cells that are in the form of contractile muscle fibres. This muscle fibre consists of fine myofibrils in their cytoplasm called sarcoplasm. 
• These muscle fibres are bound to each other by means of connective tissue.
• Muscle cells are called myocytes while the cells which give rise to myocytes are called myoblasts. 

Origin-
Muscular tissue originates from the mesoderm of the embryo. 

Features of Muscles:

• Muscular tissue is contractile. It means its cells can undergo contraction and relaxation causing movements. 
• Muscles show electrical excitability also because of the presence of electric potential difference across its plasma membrane. 

Types of muscles:
The muscles are of three types 

• Striped or striated or skeletal or voluntary muscle
• Unstriped or non-striated or visceral or smooth or involuntary muscle
• Cardiac muscle

Functions of muscular tissue:

• Muscles cause movement and locomotion in animals.
• Muscles support the bones and other structures.

Structure of skeletal muscle:

• On the outer side, a muscle is covered by a sheath of connective tissue which is called epimysium.
• Inner to epimysium, a muscle consists of bundles of muscle fibres called fasciculi
• Each fascicle is covered by a perimysium.
• Each muscle fibre of a fascicle is surrounded by endomysium.