One of the differences between involuntary and voluntary muscles is how each muscle moves. An involuntary muscle is one that can't be controlled. A voluntary muscle, however, is one that can be controlled through stimuli, such as movement.Know More
Involuntary and voluntary muscles also appear differently when viewed under a microscope. Involuntary muscle, called smooth muscle, is located within blood vessels, digestive system and internal organs, with the exception of the heart. It looks smooth when viewed under a microscope and doesn't have the striations or stripes that are seen in voluntary muscle tissue.
Voluntary muscles are also called skeletal muscles. These are the muscles attached to the bones, and movement is caused through contraction of these muscles. Every movement a body makes is due to voluntary muscles contracting and relaxing. There are several proteins contained in voluntary muscles that help the muscles to contract and relax, but the two primary proteins are myosin and actin. These muscles contain more than one nucleus and, depending upon the part of the body, can be up to 30 centimeters in length.
A third type of muscle, called cardiac muscle, is found within the body. This muscle is only found within the heart. It is a type of involuntary muscle, meaning it is one that can't be controlled.Learn more about Muscles
Examples of involuntary muscles, also known as smooth muscles, are the muscles of the urogenital tract, digestive tract, circulatory system and respiratory tract. Involuntary muscles are not controlled by the organism's will. Their actions are automatic and facilitated by the autonomic nervous system.Full Answer >
The muscles that attach to the coracoid process are the pectoralis minor, the coracobrachialis and the biceps brachii. The coracoid process is part of the shoulder blade, or scapula. It gets its name from its resemblance to a crow's beak.Full Answer >
Interesting facts about muscles include details about the number of muscles it takes to frown and walk, the strongest muscle in the body, the role of the muscles in shivering and the smallest and longest muscles in the body. As Ducksters points out, muscles work together without any conscious thought on a person's part.Full Answer >
According to Healthline, muscle rigidity is a condition in which the muscles are continually tense or contracted. Muscle rigidity is often a symptom of neurological problems or medicinal side effects.Full Answer >