GENERAL HISTOLOGY

Detailed explanation-1: -The lamina propria is composed of noncellular connective tissue elements, i.e., collagen and elastin, blood and lymphatic vessels, and myofibroblasts supporting villi. However, the main characteristic of the lamina propria is to contain numerous immunologically competent cells as well as nerve endings.

Detailed explanation-2: -The lamina propria contains gastric glands, which open into the bases of the gastric pits. These glands are responsible for the synthesis and secretion of the gastric juice. The lining epithelium of the stomach, and gastric pits is entirely made up of mucous columnar cells.

Detailed explanation-3: -The lamina propria contains capillaries and a central lacteal (lymph vessel) in the small intestine, as well as lymphoid tissue. Lamina propria also contains glands with the ducts opening on to the mucosal epithelium, that secrete mucus and serous secretions.

Detailed explanation-4: -Mucosa is the soft tissue that lines the body’s canals and organs in the digestive, respiratory and reproductive systems. It’s also called the mucous membrane. Mucosa has three layers: epithelium, lamina propria and muscularis mucosae. It plays an important part in immunity.