General Histology of Gut

General Histology of Gut(Alimentary Canal):

-Consists of four basic layers.

i)Visceral Peritoneum(Serous Membrane or Serosa)

-Outer most layer made up of Squamous Epithelium

ii)Muscular Layer

-Composed of outer longitudinal and inner circular muscle fibres.

-Both muscles are smooth muscle fibres

-Helps in peristalsis.

-Plexus of Auerbach is present in between the two layers.

iii)Submucosa

-Consists of Loose Connective Tissue and richly supplied with blood and lymphatic vessels and in some area with glands.

-Plexus of Meissner is present in this area.

iv)Mucosa

-Secretes mucus(so called mucosa) that lubricate the inner lining of the Gut.

-Composed of three layers.

a)Muscularis Mucosa(outer)

b)Lamina Propria(Middle)

c)Epithelium(inner)

-forms gastric gland in stomach villi and intestinal gland in small intestine.