User:Maryam.AlOraimi/sandbox

= What is the Muscular System? = The muscular system is one of the most significant primary body systems, playing a vital role in a variety of body processes, the most important of which is movement. Muscles are also distinguished from the rest of the body's tissues by their ability to contract and relax in order to move the associated body parts. Muscles are related to bones, blood vessels, and internal organs by tendons and ligaments. Muscles are also responsible for all of the body's movements that occur when the muscle contracts and relaxes.

= Three Types of Muscles = Skeletal muscle, cardiac muscle, and smooth muscle are three types of muscles in the body that share similar properties.

Skeletal muscles: To begin, it is important to note that a person has over 600 skeletal muscles that move bones. Skeletal muscle tissue is in the form of muscle fiber cells, and the skeleton is related to the skeleton and moves it through contraction and relaxation depending on voluntary impulses supplied by the human neurological system and consciousness.

Smooth muscles: are involuntary muscles that are controlled by the brain and cannot be controlled by the individual. Smooth muscles are made up of layers or sheets that are stacked one on top of the other, and they can be found in a variety of places throughout the body, including the walls of hollow organs like the digestive system, urinary system, and reproductive system, as well as the walls of tubes like blood vessels and airways. For example, Inside the eye.

Cardiac muscle: The muscle that makes up the heart. It is an involuntary muscle that works under the supervision of a group of cells inside the heart called the pacemaker, which regulates the heartbeat after the body is completed.

= References =


 * 1) Ross, Michael H. (2011). Histology : a text and atlas : with correlated cell and molecular biology. Pawlina, Wojciech. (6th ed.). Philadelphia: Wolters Kluwer/Lippincott Williams & Wilkins Health. ISBN  9780781772006 . OCLC 548651322.
 * 2) https://www.nlm.nih.gov/exhibition/historicalanato…
 * 3) "Muscular system", Wikipedia, 2022-02-11, retrieved 2022-02-11