What type of muscle tissue moves internal organs?
smooth muscle tissue
Muscles generally come in three flavours; Skeletal or voluntary musculature, cardiac or heart muscle and smooth muscle tissue. You're probably looking for smooth muscle tissue- it moves food through your intestines (peristalsis) and places like that. The bodies organs generally have no need to be surrounded by muscle ( and they aren't ), in fact muscles around them might seriously impair their normal functions.
There are three types of muscle tissue: cardiac muscle, skeletal muscle, and smooth muscle. What we associate with cardiac muscle is the muscle tissue in your heart. The skeletal muscles are the ones that make your body move under voluntary control. And, smooth muscle is involuntary and moves things inside your body, like in your gastrointestinal tract.
There are three types of muscle tissue: cardiac muscle, skeletal muscle, and smooth muscle. What we associate with cardiac muscle is the muscle tissue in your heart. The skeletal muscles are the ones that make http://wiki.answers.com/Q/Type_of_tissue_that_make_up_muscle# move under voluntary control. And, smooth muscle is involuntary and moves things inside your body, like in your gastrointestinal tract.
Something called smooth muscle moves the walls of all hollow organs except the heart. The muscle is called smooth because the microscopic subunits called sacromeres are not in any special arrangement. Skeletal muscle is called striated muscle because these units are in a uniform arrangement that appear as striations when seen under the microscope.
There are three groups. The diaphragm is probably the one you're asking about - it's the large "wall" of muscle between the lungs/heart in the thorax in the upper part of the body and the other, lower organs (stomach, intestines, etc) in the abdomen. When you breath, and your belly moves in or out, you are using the diaphragm.
The smooth muscle tissue moves food (bolus) through the intestines. The skeletal muscles in the abdomen are in four groups; abdominus rectus, internal and external obliques and the deepest, the transverse abdominals. They are used in lifting the legs, rotating the torso etc. Their main purpose is to stabilize your body position while moving.
The majority of the bladder is made of detrusor muscle. This muscle is told by the nervous system to contract when it expands. This is what causes the feeling of needing to urinate. In order to urinate the involuntary muscle the internal sphincter, and the voluntary muscle the external sphincter must both be opened. The detrusor muscle moves involuntarily, so the bladder would probably considered an involuntary muscle.
During passive breathing the diaphragm moves down for inhalation this pushes the organs of the abdomen down and so pushes the rectus abdominus out, this is why you see your abdomen moving. To assist exhalation the rectus abbominus then contracts pushing the organs back in and so pushing hte diaphrag pack up.