How can you identify smooth muscle tissue under a microscope?
Smooth muscle is found in the walls of internal organs, such as the organs of the digestive tract, blood vessels, and others. It consists of mononucleate fibers with tapered edges. No striations are visible in smooth muscle under the microscope.
Which slide shows you smooth muscle fibers?
Slide 41. Smooth muscle – long, slender central nuclei, lying within narrow, fusiform cells that lie parallel to each other in a smooth arrangement. (Muscle cells are often referred to as muscle fibers because of their narrowness and length.)
What microscope is used to see muscle cells?
The structural characteristics of the striated muscle cell as seen under the electron microscope are reviewed.
What identifying characteristics would you look for on a slide of cardiac muscle to differentiate it from skeletal muscle?
Cardiac muscle tissue, like skeletal muscle tissue, looks striated or striped. The bundles are branched, like a tree, but connected at both ends. Unlike skeletal muscle tissue, the contraction of cardiac muscle tissue is usually not under conscious control, so it is called involuntary.
What is another name for smooth muscle?
Smooth muscle, also called involuntary muscle, muscle that shows no cross stripes under microscopic magnification. It consists of narrow spindle-shaped cells with a single, centrally located nucleus. Smooth muscle tissue, unlike striated muscle, contracts slowly and automatically.
What are the 4 muscle categories?
- Skeletal Muscle. Skeletal muscle, attached to bones, is responsible for skeletal movements.
- Smooth Muscle. Smooth muscle, found in the walls of the hollow internal organs such as blood vessels, the gastrointestinal tract, bladder, and uterus, is under control of the autonomic nervous system.
- Cardiac Muscle.
What is the function of smooth muscle?
Smooth muscle is present throughout the body, where it serves a variety of functions. It is in the stomach and intestines, where it helps with digestion and nutrient collection. It exists throughout the urinary system, where it functions to help rid the body of toxins and works in electrolyte balance.
What does smooth muscle tissue look like?
Smooth muscle cells are spindle shaped, have a single, centrally located nucleus, and lack striations.
What are the 4 types of muscle tissue?
Different types of muscle
- Skeletal muscle – the specialised tissue that is attached to bones and allows movement.
- Smooth muscle – located in various internal structures including the digestive tract, uterus and blood vessels such as arteries.
- Cardiac muscle – the muscle specific to the heart.
Which is the best slide to study smooth muscle?
Smooth muscle may be studied using slide #29 #029-1 smooth muscle Webscope or slide #169 , #169 Webscope, both in the intestine. To find the muscle layer, look at the at slide at the lowest power (this is about the same as looking at the glass slide with the naked eye).
Where are the fascicles located on the histology slide?
In the cross section of the skeletal muscle histology slide, you will find the numerous muscle fascicles (bundle of muscle fibers). These muscle fascicles are separated by the perimysium containing the blood vessels and connective tissue. You will see the granular or dot appearance in the sarcoplasm of skeletal muscle.
Why do you see cross striations on a muscle slide?
Cross striations can be seen, and are due to the structure of the sarcomere. A sarcomere consists of the structures between two Z lines. You should recognize: (Using your microscope and glass slides may help to see these fine structures)
How are fascicles and muscle cells the same?
Muscle fiber and muscle cell are synonymous. Groups of individual cells that are surrounded by perimysium are known as fascicles and groups of these fascicles, surrounded by epimysium make up a muscle. In slide 59, stained with trichrome (even slide boxes) or H&E (odd slide boxes), three layers of connective tissue sheaths are visible.