How do you distinguish between a skeletal muscle and a cardiac muscle? | NCERT solution | Class 11 Biology | Unit-20 Locomotion and Movement



Q.7:- How do you distinguish between a skeletal muscle and a cardiac muscle?

 

Answer:



Both cardiac and skeletal muscles are striated. Cardiac and skeletal muscles are “striated” in that they contain sarcomeres and are packed into highly-regular arrangements of bundles; smooth muscle has neither. While skeletal muscles are arranged in regular, parallel bundles, cardiac muscle connects at branching, irregular angles (called intercalated discs). Striated muscle contracts and relaxes in short, intense bursts, whereas smooth muscle sustains longer or even near-permanent contractions.