What is micturition process?
Micturition or urination is the process of emptying urine from the storage organ, namely, the urinary bladder. The detrusor is the smooth or involuntary muscle of the bladder wall. The urethral muscles consist of the external and internal sphincter.
What is micturition in simple words?
Micturition or urination is the process of expelling urine from the bladder. This act is also known as voiding of the bladder. The process of micturition is regulated by the nervous system and the muscles of the bladder and urethra. The urinary bladder can store around 350-400ml of urine before it expels it out.
Does micturition and urination have same meaning?
Micturition, also known as urination, is the ejection of urine from the urinary bladder through the urethra to the outside of the body. In healthy humans the process of urination is under voluntary control.
What do you mean by micturition reflex?
micturition reflex. contraction of the walls of the bladder and relaxation of the trigone and urethral sphincter in response to a rise in pressure within the bladder; the reflex can be voluntarily inhibited and the inhibition readily abolished to control micturition.
What is class11 micturition?
Micturition is the release of urine from urinary bladder through urethra. It is also termed as ‘Urination’. This occurs involuntarily in children upto 4-5 years; thereafter regulated voluntarily.
What is micturition class 10th?
Micturition is a process where urine is expelled from the body. In other words, the process of expelling urine from the body is called micturition. The human excretory system consists of a pair of kidneys and ureters, a urinary bladder, and a urethra.
What is the other term of micturition?
piss pee pissing peeing oliguria nycturia nocturia lithuresis urination micturition.
What is the other name of micturition?
urination, also called Micturition, the process of excreting urine from the urinary bladder.
What are 3 phases of normal micturition?
This diagram in this article illustrates the three phases: phase 1: filling and storage; phase 2: voiding and phase 3: termination of voiding. The normal bladder fills and empties in cycles.
Why is urethra longer in males?
There is a sphincter at the upper end of the urethra, which serves to close the passage and keep the urine inside the bladder. As the passage needs to traverse the length of the penis, it is significantly longer in males than females.
What is micturition and how is it controlled?
Micturition involves the simultaneous coordinated contraction of the bladder detrusor muscle, which is controlled by parasympathetic (cholinergic) nerves, and the relaxation of the bladder neck and sphincter, which are controlled by sympathetic (α-adrenergic) nerves.
Where is micturition reflex initiated?
Micturition is initiated by a supraspinal reflex pathway that passes through a centre in the brainstem. The pathway is triggered by myelinated afferents (Aδ-fibres), which are connected to the tension receptors in the bladder wall.
Where does the process of micturition take place?
The urinary bladder is under the control of the central nervous system (CNS). Thus urinary bladder will store the urine until the CNS signals it. The process of micturition initiates when the brain signals urinary bladder to contract.
What does micturition mean in relation to urination?
After the kidneys have done their job, now it is the bladder’s job to store the urine and empty fully at the time of urination, which is also known as micturition. Let us learn more. Micturition or urination is the process of expelling urine from the bladder.
What is the voiding phase of micturition called?
This is also known as the voiding phase of micturition. Most of the time, the bladder (detrusor muscle) is used to store urine. As it fills, the folded bladder walls (rugae) distend and a constant pressure in the bladder (intra-vesicular pressure) is maintained. This is known as the stress-relaxation phenomenon.
Which is a major diagnostic element of the micturition process?
Thus it is a major clinical diagnostic element. Micturition process consists of two phases: The urinary bladder is a balloon-shaped, hollow, muscular, organ that acts as the storage organ for urine. The urinary bladder in a healthy urinary system can store up to 16 ounces of urine for 2 to 5 hours easily.