NEET BIOLOGY

Detailed explanation-1: -The detrusor muscle is located within the walls of the bladder and is composed of smooth muscle fibers that are longitudinal and circular. The layers of the detrusor muscle start longitudinally in the inner layer, become circular in the middle layer, and then longitudinal again in the outer layer.

Detailed explanation-2: -The urothelium is the inner lining of the bladder. It is made up of urothelial cells (also called transitional cells). The urothelium is also called the transitional epithelium. The lamina propria (also called the submucosa) is a thin layer of connective tissue that surrounds the urothelium.

Detailed explanation-3: -The muscularis (the detrusor muscle) consists of inner and outer longitudinal layers and a middle circular layer of bundles of smooth muscle separated by fine bands of collagen.

Detailed explanation-4: -The three layers of muscles are arranged longitudinal-circular-longitudinal from innermost to outermost.

Detailed explanation-5: -The bladder wall contains two smooth muscle layers: (1) an outer layer of longitudinal to obliquely arranged muscle fibers and (2) an inner layer of transversely or circularly arranged muscle fibers.