Home
Class 11
BIOLOGY
Identify the following structures and ex...

Identify the following structures and explain that significance in renal physiology?
(c) Sphincters in the bladder

Text Solution

Verified by Experts

(c) Sphincters in the bladder:
1. The external and internal sphincters are muscles guarding the opening of the urinary bladder at the urethra.
2. When the urinary bladder gets filled with urine, the urinary bladder stimulates the central nervous system via sensory neurons and brings about contraction of the bladder. Simultaneously somatic motor neurons induce the sphincters to close.
3. Smooth muscles contract resulting in the opening of the internal sphincter passively and relaxing the external sphincter. When the stimulatory and inhibitory controls exceed the threshold, the sphincter opens and urine is expelled out.
4. Thus the sphincter muscles keep the urethral closed except during expulsion of urine. Thus the sphincter muscles keep the urethra closed except during expulsion of urine.
Promotional Banner

Similar Questions

Explore conceptually related problems

Identify the following structures and explain that significance in renal physiology? (a) Podocytes

Identify the podocytes structure and explain their significance in renal physiology?

Identify the following structures and explain their significance in renal phyisology. Renal cortex.

Identify the renal cortex structure and explain their significance in renal physiology?

Identify the following structures and explain their significance in renal physiology? a. Juxtaglomerular apparatus b. Podocytes c. Sphincters in the bladder d. Renal cortex

Identify the sphinctres in the bladder structure and explain their significance in renal physiology?

Identify the following sets as null set or singleton set. C = {0}.

Arrange the following structures in the order that a drop of water entering the nephron would encounter them. Afferent arteriole Bowman's capsule Collecting duct Distal tubule Glomerulus Loop of Henle Proximal tubule Renal pelvis