The cells are long and slender so they are sometimes called muscle fibers, and these are usually arranged in bundles or layers that are surrounded by connective tissue. Actin and myosin are contractile proteins in muscle tissue.
What does muscle tissue look like under a microscope?
Under the light microscope, muscle cells appear striated with many nuclei squeezed along the membranes. The cells of cardiac muscle, known as cardiomyocytes, also appear striated under the microscope. Unlike skeletal muscle fibers, cardiomyocytes are single cells with a single centrally located nucleus.
Why are muscle cells long?
The muscle cell is long so it can contract and relax with other cells.
Why are muscle cells shaped the way they are?
Muscle cells contain many long fibers which can shorten and pull with great force. Many movements are caused by the contracting. Voluntary means under your control. At “A” you can see the nucleus. Because of their striped appearance, they are called striated.
How are smooth muscle cells different from skeletal muscle cells?
Compared to skeletal muscle, smooth muscle cells are small. They are spindle shaped and have no striations. Instead, they have bundles of thin and thick filaments. All skeletal muscle fibres are not the same. They differ in structure and function, for example, in the speed they can contract.
How many muscle cells are there in a muscle cell?
Skeletal muscles are made up of hundreds of thousands of muscle cells (also called muscle fibres). These muscle cells act together to perform the functions of the specific muscle they are part of. Skeletal muscle cell showing thick and thin protein filaments and the sarcomere where they overlap. Would you like to take a short survey?
Which is a characteristic of a muscle tissue?
Muscle Tissue. Muscle tissue is composed of cells that have the special ability to shorten or contract in order to produce movement of the body parts. The tissue is highly cellular and is well supplied with blood vessels.