What muscle is responsible for contraction of the urinary bladder during micturition?
A)trigone
B)internal urinary sphincter
C)micturition mucle
D)detrusor muscle

Question

Quizplus · Accepted Answer

The detrusor muscle is responsible for contractile activity during micturition. It forms the muscular layer of the urinary bladder and is capable of powerful contractions to expel urine. The other options (trigone, internal urinary sphincter, and micturition muscle) are not responsible for contraction of the bladder during micturition. The trigone is a triangular region at the base of the bladder that serves as a landmark for the ureters and urethra. The internal urinary sphincter is a smooth muscle that surrounds the bladder neck and is tonically active to maintain urinary continence. The micturition muscle is not a specific anatomical structure but refers to the coordinated activity of various muscles involved in the process of micturition.

What Muscle Is Responsible for Contraction of the Urinary Bladder