It is 'lined' by many muscles at many points, including circular muscles, longitudinal muscles etc. No single muscle, or single type of muscle, lines it.
Smooth muscle makes up the involuntary muscles that perform peristalsis: rhythmic contractions that move food along in the digestive tract.
Well there are smooth muscles throughout the digestive tract (which includes the small intestine). This means they have no striations.
Smooth Muscles
smooth muscle
The digestive muscle :)
epithelium
to digest: your body digests food as it goes down your body, digesting is where in your body the food is broken down until it reaches the bottom! serving for or pertaining to digestion; having the function of digesting food: the digestive tract.
PeristalsisPeristalsis
Peristalsis is the process by which smooth muscle moves a mass of food (called the food bolus) through the digestive system. There is circular smooth muscle and longitudinal smooth muscle in the digestive tract. Contraction of circluar smooth muscle keeps the food bolus from moving "backward" along the digestive tract by decreasing the diameter of the tract behind the bolus. Contraction of the longitudinal muscle in the digestive tract propels the food bolus "forward" in the digestive tract.
smooth muscle
Because the food is hard. xD
The stomach, or digestive system and/or digestive tract.
Smooth muscle contractions account for the movement of food along the digestive tract.
Peristalsis, a series of muscle contractions in the intestines and stomach that help to push the food through your digestive tract.
responsible for the continual movement of food along the digestive tract
The muscle action that mixes chyme with digestive juices throughout the digestive system is called Peristalsis. Peristalsis are wave-like of contractions and expansions of muscles. The muscles help to move the bolus (food) through the digestive tract. Peristalsis are located all over the digestive tract.
it goes to the small intenstine but breaks down by pepsin
Smooth muscle in the walls of the digestive tract contract and form a movement called peristalsis.