Describe the common tissues found in the organs of the intestinal tract. (4 points) describe the common tissues and structures found in accessory organs. (4 points) describe these structures and their function in the pancreas: (6 points) acinar cells that secrete enzymes or bicarbonate islet cells that secrete insulin or glucagon blood vessel describe these structures and their function in the small intestine: (6 points) villi smooth muscle intestinal glands

1)

Tissues in the intestinal tract made up of loose connective tissues

Mucosa: It playa a role in the secretion of lubricants that lubricate and protect the intestinal wall from digestive enzymes.

Submucosa: It contains nerves, blood vessels and elastic fibers with collagen. It maintains the shape of the intestine by stretching.

Serosa: During digestive movements, it secretes lubricating fluid and prevents from frictional damages.

2)

Accessory digestive organs have common specialized cells, ducts, and secrete digestive hormones to help in digestion.

3)

Acinar cells that secrete and transport enzymes or bicarbonate into the duodenum for the digestion of the food.

Islet cells that secrete insulin or glucagon that increase the glucose level in the blood.

Blood vessels provide oxygen and nutrients for tissue growth and maintenance.

4)

Villi help to absorb digested food.

Smooth muscle moves food through the digestive tract.

Intestinal glands help in digestion and absorption by releasing hormones.

Acinar cells are basic units of the exocrine pancreas, islets are clusters of cells, and blood vessels maintain pancreatic islets. Villi are projections of the small glandular intestine, whose contraction is due to smooth muscle.

In conclusion, acinar cells are units of the exocrine pancreas, islets are clusters of cells, and blood vessels maintain pancreatic islets. Villi are projections of the small glandular intestine, whose contraction is due to smooth muscle.

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