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0,2 MuscLs Wh have studied in Chapter 8 that the clla and flagella are the outgrowths fothe cell membrane. Flagellar movement helps in the swimming of permatozoa. maintenance of water current in the canal system of sponges Fistin locomotion of Protozoans like Euglena. Muscle is a speclalised pectial properties like excitability, contractily bigticity. Muscles have been classiffed using, extensibility and ictivities. Based on their location. three types of muscles are sentified : (i) Skeletal (ii) Visceral and (iii) Cardiac. Skeletal muscles are closely associated with the skeletal components It the body. They have a striped appearance under the microscope and tence are called striated muscles. As their activities are under the vluntary control of the nervous system. they are known as vohuntary muscles too. They are primarily involved in locomotory actions and tanges of body postures. Visceral muscles are located in the inner walls of hollow visceral organs ditbe body like the alimentary canal, reproductive tract. etc. They do not ahibit any striation and are 5 mooth in appearance. Hence. they are called mooth muscles (nonstriated muscle). Thelr activities are not under the whintary control of the nervous system and are therefore known as broluntary muscles. They assist, for example, in the transportation of food srivgh the digestive tract and gametes through the genitul trict.

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Updated on: Nov 15, 2022