Jejunum

Product name Jejunum
Cat. No. 0065100B
No. of samples 1
Description Jejunum, normal
Age/Sex : 57/M
Price 197 EUR
260 USD
170 GBP

Jejunum

Product Related Literature

Jejunum is the part of the middle of the small intestine in higher vertebrates most, including mammals, reptiles, birds. In fish, it is not so clear, may be used instead of jejunal environment and middle intestines intestinal condition split of the small intestine. Ileum duodenum between the jejunum. Change from the duodenum to the jejunum so (see stomach) “closed” camera tri-link tool, which is usually defined as a bending Duodenojejunal, it has been applied. In adults, the small intestine, in general, the jejunum is 5.5 ~ 6 m length of 2.5 m. PH of the small intestine is between (weakly alkaline or neutral) 7-9. If the jejunum was initiated by the impact dull reflection vomiting. It is suspended by mesentery which gives great mobility abdominal intestinal ileum and jejunum. It also includes a vertical and smooth muscle helps to move food through a process called peristalsis.

Mucosa of the small intestine is specialized for absorption by the intestines of small food particles are digested by enzymes in the duodenum during previous. Stayed was absorbed once (excluding fat go lymphatic) nutrients enterohepatic circulation of intestine, blood is processed and enters the liver via the hepatic portal vein.

The irradiated surface of the ileum, the projections of the mucosa called villi increase the surface area of ​​tissue that can be used to absorb the nutrients from the food ingested, and is covered by the finger. These villi epithelial cell line with the villi. Transport of nutrients across the epithelial cells, contains passive transport of fructose and glucose, active transport of amino acids, small peptides, vitamins, and glucose through the ileum and jejunum. Jejunum villi is much longer than in the jejunum or duodenum.

Jejunum are included (in the ileum) or Peyer’s patches (duodenum) Brunner glands very few. However, it was suspended in veil, there is a jejunum lymph nodes some. I have a large circular folds very submucosal called circular folds increase the surface area for absorption of nutrients at the beginning of the small intestine. Annular folds have been developed at the beginning of the best small intestine.

Mesentery is responsible for the binding of (part of the small intestine) ileum and jejunum to the back wall of the abdomen points (ie, the first definition) peritoneal correctly. A blood vessel, nerve and lymphatic between two sheets of peritoneum. This can be part of these intestine to move relatively freely in abdominopelvic cavity. However, feeling for example because it is the center line pain, in general, the brain does not allow you to display their meaning accurately.

The root of the appropriate mesenteric extension (lower right) level to 15 cm bending duodenojejunal on the left side of the L2 at an angle to the ileocecal region at the level of the right sacroiliac joint well in the right iliac. Root of the mesentery crosses the right gonadal artery part of the second and third of the duodenum, abdominal aorta, inferior vena cava right ureter, and right psoas major muscle.

The transverse colon mesentery, meso times the peritoneum that connects the transverse colon to the back wall of the abdomen, is wide. It, after separating the surround transverse colon, it is continuous with the two rear section of participation omental behind it, when to vent on the front of the front border of the pancreas, and they continue to return to spine. Fold this, it contains the blood vessels supplying the transverse colon between the layers. Transverse colon mesentery is derived from the dorsal mesentery in embryo.

Peristalsis is the relaxation and contraction of radial symmetry propagation muscle to down tube wave of muscle by the method of antegrade. In humans, it is a peristaltic contraction of smooth muscles to drive the contents through the digestive tract. This is because the wave of contraction of the circular muscle and leading vertical, there is a wave of relaxation of these muscles. Earthworms uses a similar mechanism to drive their movements. The surrounding, from “around” stallein derived from the Latin word to new “include”, which comes from the Greek word peristallein, it is the word. In order to obtain a peristaltic wave that causes (called a bolus chyme in the gastrointestinal tract in the stomach and esophagus) balls food digestive tract of a sequence length of the gastrointestinal tract most contracts smooth muscle . In order to follow the contraction of smooth muscle in the longitudinal direction for pressing forward digests behind initiated by contraction of smooth muscles of the circular to prevent the back of the mouth, peristalsis chewed material. Catastalsis process involves the muscles of the bowel.