Jejunum
Videos
The jejunum is the second part of the small intestine in humans and most higher vertebrates, including mammals, reptiles, and birds. Its lining is specialized for the absorption by enterocytes of smal
Small intestine
Transmission electron microscope (TEM) image of human jejunum
TEM image of mouse jejunum (14,000-fold magnification)
Dog jejunum (magnified 100-fold)
Duodenum
Videos
The duodenum is the first section of the small intestine in most vertebrates, including mammals, reptiles, and birds. In mammals, it may be the principal site for iron absorption. The duodenum precede
Jejunum
…birds. Its lining is specialized for the absorption by enterocytes of small nutrient molecules which have been previously digested by enzymes in the duodenum. The jejunum lies between the duodenum and the ileum and is considered to start at the suspensory muscle of the duodenum, a location called the…
Diagram of the human duodenum with major parts labelled
Dog duodenum 100X
Duodenum with amyloid deposition in lamina propria
Micrograph showing giardiasis on a duodenal biopsy (H&E stain)