NEET BIOLOGY

Detailed explanation-1: -In all other regions, the outer layer is fibrous connective tissue. There is a triangular area, called the trigone, formed by three openings in the floor of the urinary bladder. Two of the openings are from the ureters and form the base of the trigone.

Detailed explanation-2: -The bladder trigone is a triangular shaped region at the base of the bladder defined by the two ureteral orifices and the internal urethral meatus.

Detailed explanation-3: -The trigone is formed predominantly from bladder muscle. Histological studies suggest that two muscle groups reside in the trigonal region: the detrusor muscle of the bladder and longitudinal ureteral fibers.

Detailed explanation-4: -The fundus is the base of the bladder, which is formed by the posterior wall and contains the trigone of the bladder, and is lymphatically drained by the external iliac lymph nodes.

Detailed explanation-5: -Trigone. The trigone is a triangular muscular structure located between the bladder and urethra. Effective connection between the ureters and the trigone are vital for proper functioning of the ureteral valve mechanism.