MUSCULAR TISSUE

*origin- mesoderm
*muscular tissue is about 30% of total tissue.
*total number of muscles in human body are 639
*muscular tissue also contain small amount of matrix.

Types of muscular tissue-

1. Skeletal muscular tissue.

2. Smooth muscular tissue.

3. Cardiac tissue.

1.Skeletal muscular tissue-

*shape-cylindrical and unbranched

*nucleus-it is multinucleated

*sarcolema-it represent plasma membrane of muscle fibre.

*sarcoplasm-it represent cytoplasmic content of muscle fibre.

*myoglobin-it is red in colour. it is Fe++ containing pigment,it carries oxygen

*dark band and I band are alternately arranged.

*found in hind and fore limbs.

*myofibril- about 1000 in number.

2.Smooth muscular tissue-

*shape-spindle fibre.

*sarcolemma-less developed or absent.

*sarcoplasm-present in very less amount.

*myofibril- very less in number.

*nucleus- single nucleate.

*complete absence on A-band and I- band.

*complete absence of myoglobulin.

3. Cardiac tissue

*shape-cylindrical and branched

*nucleus-multinucleate/ uninucleate.

*presence of well developed sarcolemma.

*presence of sarcoplasm.

*presence of myofibril in between 4 -1000

*alternately arranged A-band and I-band are present.

*presence of myoglobin.

*it is formed by fusion of two adjecent muscles fibre.

*it is found in heart.