The trachea is lined with a moist mucous-membrane layer composed of cells containing small hairlike projections called cilia. The cilia project into the channel (lumen) of the trachea to trap particles. There are also cells and ducts in the mucous membrane that secrete mucus droplets and water molecules.
Breeds of Livestock - Brahman Cattle. Brahman. The Brahman breed originated from Bos indicus cattle originally brought from India. Through centuries of exposure to inadequate food supplies, insect pests, parasites, diseases and the weather extremes of tropical India, the native cattle developed some remarkable adaptations for survival.
Brahman cattle are unrivaled in their adaptability traits. Their dark skin, serves as a filter for the sun and a barrier for harmful sunlight. Their hair color can range from light grey to red or black, with most animals in a light to medium gray shades.exas has always been the major breeding center for the cattle. It is not surprising then, that the American Brahman Breeders Association (ABBA) was formed in Houston in 1924. James W Sartwell first proposed the name of Brahman for this breed. Their first officially registered animal was named Sam Houston.