alleryStart learning →What kind of muscle forms the contractile wall of the bladder?
ACircular skeletal muscle bands
BLongitudinal striated muscle
CCrisscrossing smooth muscle
DRadial cardiac muscle fibres
Answer & Solution
Correct answer: C. Crisscrossing smooth muscle
1. The bladder must shrink from a large distended sac to nearly nothing, so its muscle runs in all directions.
2. Irregular crisscrossing bands of smooth muscle make up the detrusor.
3. Skeletal muscle appears only at the external urethral sphincter, which is under voluntary control.
4. No cardiac muscle exists anywhere in the urinary tract.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 25 "The Urinary System", section 25.2 Gross Anatomy of Urine Transport_
Keep practising The Urinary System
Browse all The Urinary System questions for NEET PG, or explore more Physiology topics.
Related questions
How many times over is the entire blood volume filtered through the kidneys in a day?What proportion of hospitalised patients does acute kidney injury affect?What happens to the bladder in late pregnancy?What is sodium's place in determining plasma osmolarity?What is a diuretic?If no further water reabsorption happened beyond the distal tubule, roughly how much urineWhen the kidney deaminates glutamine, what does the body gain and what does it lose?Which statement describes simple diffusion in the nephron?