Striated muscle where is it found

Such rapid spread of contraction allows the cardiac muscles to act as a functional syncytium. The intercalated discs contain three types of membrane-to-membrane contact:. In addition to the contractile cells, there is a specialized system made up of modified muscle cells whose function is to generate the stimulus for heartbeat and conduct the impulse to various parts of the myocardium. This system consists of sinoatrial node, atrioventricular node, bundle of His, and Purkinje fibers.

How are fibers connected? Location and number of nuclei How are fibers connected? Morphology Location of muscle Answer:. Slides Please select whether to view the slides in study mode or quiz mode. In study mode, the images will contain labels and a description. In quiz mode, labels and description will be hidden. Study Mode. With this dye, the A-bands are stained dark and the I-bands light. Since both cardiac muscle fibers and skeletal muscle fibers are striated, how would you differentiate between them in a histological slide?

This is a section of the tongue. Begin by identifying groups of fasciculi cut in transverse section. Where are the nuclei located within a cell? Can you identify the endomysium and the perimysium? Where can capillaries be found? How does the location of capillaries in muscle differ from peripheral nerves? As you zoom in on the image, note the abundance of capillaries in between the cardiac muscle cells.

Why are so many capillaries necessary? Note how the cardiac muscle cells are striated, like skeletal muscle cells. However, unlike skeletal muscle, note how the end of each cells splits into branches. In addition, the single nuclei of cardiac muscle cells are located centrally. Identify the intercalated discs. There are about muscles in the human body. Muscles have a range of functions from pumping blood and supporting movement to lifting heavy weights or giving birth. Muscles work by either contracting or relaxing to cause movement.

This movement may be voluntary meaning the movement is made consciously or done without our conscious awareness involuntary. Glucose from carbohydrates in our diet fuels our muscles.

To work properly, muscle tissue also needs particular minerals, electrolytes and other dietary substances such as calcium, magnesium, potassium and sodium. A range of problems can affect muscles — these are collectively known as myopathy.

Muscle disorders may cause weakness, pain or even paralysis. Different types of muscle The three main types of muscle include: Skeletal muscle — the specialised tissue that is attached to bones and allows movement. Together, skeletal muscles and bones are called the musculoskeletal system also known as the locomotor system.

Generally speaking, skeletal muscle is grouped into opposing pairs such as the biceps and triceps on the front and back of the upper arm. Skeletal muscles are under our conscious control, which is why they are also known as voluntary muscles. Another term is striated muscles, since the tissue looks striped when viewed under a microscope. Smooth muscle — located in various internal structures including the digestive tract, uterus and blood vessels such as arteries.

Smooth muscle is arranged in layered sheets that contract in waves along the length of the structure. Another common term is involuntary muscle, since the motion of smooth muscle happens without our conscious awareness. Cardiac muscle — the muscle specific to the heart. You can raise your eyebrow to look surprised or wiggle your nose. And while you're looking at your face, don't pass over your tongue — a muscle that's attached only at one end!

Your tongue is actually made of a group of muscles that work together to allow you to talk and help you chew food. Stick out your tongue and wiggle it around to see those muscles at work. Because there are so many skeletal muscles in your body, we can't list them all here. But here are a few of the major ones:. Reviewed by: KidsHealth Medical Experts.

Larger text size Large text size Regular text size. Smooth Muscles Smooth muscles — sometimes also called involuntary muscles — are usually in sheets, or layers, with one layer of muscle behind the other. Page 1 A Hearty Muscle The muscle that makes up the heart is called cardiac muscle.

Skeletal Muscle. Face Muscles You may not think of it as a muscular body part, but your face has plenty of muscles. Major Muscles Because there are so many skeletal muscles in your body, we can't list them all here.

But here are a few of the major ones: In each of your shoulders is a deltoid say: DEL-toyd muscle. Your deltoid muscles help you move your shoulders every which way — from swinging a softball bat to shrugging your shoulders when you're not sure of an answer. The pectoralis say: pek-tuh-RAH-lus muscles are found on each side of your upper chest.

These are usually called pectorals say: PEK-tuh-rulz , or pecs, for short. When many boys hit puberty, their pectoral muscles become larger. Unlike other types of muscle, cardiac muscle never gets tired.

It works automatically and constantly without ever pausing to rest. Cardiac muscle contracts to squeeze blood out of your heart, and relaxes to fill your heart with blood. Home Explore the BBC. This page has been archived and is no longer updated. Find out more about page archiving. Prehistoric Life. The mind The body. Nervous system. Brain Sex Sleep.