Question

Do intercalated discs and striations suggest the presence of sceptical muscle?

Answer 1

Hint: As one of the three major muscle tissues, the skeletal muscle is an important component in the human body. Connective tissue sheaths enclose thousands of muscle fibres in each skeletal muscle. In skeletal muscle, fasciculi are clusters or bundles of muscular fibres.

Complete answer:
The human body comprises three different types of muscle tissues which are as follows:
1. Skeletal Muscle: For skeletal muscle to function effectively, it is totally dependent on the neurological system.
2. Smooth Muscle: This type of non-striated muscle is involuntary in nature.
3. Cardiac Muscle: As the name suggests, this type of muscle tissue is found only in the heart area of the body.
Aside from the microscopic arrangement, these three muscle groups differ in their location in the body and its regulatory systems.
In the skeletal muscle, fibres are composed of several nuclei. Unlike cardiac muscle which is involuntary, skeletal muscle is linked to bones and displays voluntary control.
It is seen that both cardiac and skeletal muscles have striations as a result of their construction. Whereas microscopically, intercalated discs only help to identify heart muscle as these are present only in the cardiac region of the body. To operate as a single unit, cardiac muscle comprises separate heart muscle cells (cardiomyocytes) linked by intercalated discs. Intercalated discs allow coordinated contractions of the heart muscle.
Therefore, it can be concluded that the presence of both striations and intercalated discs do not necessarily suggest the presence of skeletal muscles as the intercalated discs are associated with the cardiac muscles.

Note:
In the human body, a muscle belongs to one of the four major tissue types that make up the body's structure. There are three types of muscle tissue, all of which have certain characteristics. Their plasma membranes may alter their electrical states (from polarized to depolarized) and transmit an electrical wave designated as an activation function down the whole length of the membrane, which is well known for its adaptability characteristic.