showing your will when the muscles were ___
Answers
Answer:mooth Muscles
Smooth muscles — sometimes also called involuntary muscles — are usually in sheets, or layers, with one layer of muscle behind the other. You can't control this type of muscle. Your brain and body tell these muscles what to do without you even thinking about it. You can't use your smooth muscles to make a muscle in your arm or jump into the air.
But smooth muscles are at work all over your body. In your stomach and digestive system, they contract (tighten up) and relax to allow food to make its journey through the body. Your smooth muscles come in handy if you're sick and you need to throw up. The muscles push the food back out of the stomach so it comes up through the esophagus (say: ih-SAH-fuh-gus) and out of the mouth.
Smooth muscles are also found in your bladder. When they're relaxed, they allow you to hold in urine (pee) until you can get to the bathroom. Then they contract so that you can push the urine out. These muscles are also in a woman's uterus, which is where a baby develops. There they help to push the baby out of the mother's body when it's time to be born.
You'll find smooth muscles at work behind the scenes in your eyes, too. These muscles
The muscular tissue of the body constitutes from one-third to one-half of the body mass of the average vertebrate.
Muscular tissue functions in:
� movement and locomotion, through its direct connection with the skeletal system
� more subtle movements associated with maintaining posture/vertical position
� help to generate heat due to catabolic reactions that are associated with muscular activity (such that animals shiver or increase overall movement when body temperature drops)
� can be modified into other structures, such as electric organs in some fish
The general structure of a muscle fiber include (Fig. 10.2, p. 347) myofibrils (chains of repeating subunits) composed of two kinds of filaments:
� thin filaments (composed of myosin) and thick filaments (composed of actin, tropomyosin and troponin) that interact by binding to produce a sliding movement between the filaments, and that creates tension in the muscle fiber leading to muscle contraction.
There are three generally recognized muscle tissue types: smooth, cardiac and skeletal, each tissue type with a distinct location in the body, cellular organization (histology), and general action of the muscle fibers (physiology)
Because of the multiple functions of muscles, criteria for classifying muscles include:
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Answer:
restless
Explanation:
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