peristalsis
The condition caused by the presence of digested blood in the stool is called melena. It appears as black, tarry stools and is usually a sign of bleeding in the upper digestive tract. It is important to seek medical attention if melena is present.
Gastro intestinal tract /systemThe digestive system.
The rhythmic movement of muscles in the walls of the gastrointestinal (GI) tract is called peristalsis. It helps propel food and nutrients through the digestive system by contracting and relaxing muscles in a coordinated manner. This movement is essential for digestion and absorption of nutrients.
The removal of feces from the body is called defecation or bowel movement. This process is essential for eliminating waste and toxins from the digestive system.
The digestive system of porifera, also known as sponges, is simple and lacks specialized organs. They have pores through which water enters, bringing in food particles. The food is then digested by specialized cells called choanocytes, and waste is expelled through the same pores. This process helps sponges obtain nutrients and remove waste from their bodies.
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in the small intestine, specifically the beginning part, called the duodenum.
The first part of the digestive tract is the top section of the small intestine called the Ileum. Food is not digested in the stomach, just broken down into liquidised form to enable it to be absorbed by the digestive system.
Chyme is the mixture of partially digested food and digestive juices formed in the stomach.
peristalsis
The layer of the digestive tract that is composed of stratified and columnar epithelium is called the mucosa. This layer is responsible for absorbing nutrients from digested food and protecting the digestive tract from harmful substances.
The mixture of partially digested food and gastric juices is called chyme.
It transports partly-digested food from the mouth down to the stomach . The food moves down by the movement of a wave-like pattern called ' peristalsis' .
The partially digestive food in the stomach is known by the name of Chyme.
The lymph vessels or the blood vessels of the digestive absorb the digested food through the tiny projections in the small intestine called villi.
This is called absorption.
Smooth muscle in the walls of the digestive tract contract and form a movement called peristalsis.