The wall of the bladder is comprised of
smooth muscle fibers
oriented in multiple different directions. These smooth muscle fibers are collectively known as the detrusor muscle
Is the bladder an organ or muscle?
The bladder is a
subperitoneal, hollow muscular organ
that acts as a reservoir for urine. The bladder is located in the lesser pelvis when empty and extends into the abdominal cavity when full. In children, the bladder is located in the abdomen and does not completely descend into the pelvis until puberty.
Is the bladder muscle tissue?
The muscularis propria
is the thick, outer muscle layer of the bladder. It is made up of 3 layers of muscle that work automatically without you thinking about it (called smooth muscle). Other tissue that separates the bladder from other organs are: serosa – a thin membrane that covers the top part of the bladder.
Is the bladder and involuntary muscle?
The detrusor is
the smooth or involuntary muscle of the bladder wall. The urethral muscles consist of the external and internal sphincter. The internal sphincter and detrusor muscle are both under autonomic control. The external sphincter, however, is a voluntary muscle under the control of voluntary nerves.
How many muscles are in the bladder?
The
two muscles
are either the male or female external urethral sphincter and the internal urethral sphincter. When either of these muscles contracts, the urethra is sealed shut.
Who has bigger bladder males or females?
This gives the physiological capacity of the adult
male
and female as 500 ml, and notes that there is probably no inherent difference between male and female. The habit of urination has a direct bearing on the size of the bladder.
Is everyone’s bladder the same size?
“There is no such thing as a small bladder unless the person has had surgery to reduce the size for cancer or unless they are neurologically impaired,” says Dr. Kavaler. “Most people have normal-size bladders that may seem small functionally but
in reality are the same size as everyone else’s
.
What organ system does the bladder belong to?
The organs of
the urinary system
include the kidneys, renal pelvis, ureters, bladder and urethra. The body takes nutrients from food and converts them to energy.
What muscles make you pee?
The primary function of
the detrusor muscle
is to contract during urination to push the urine out of the bladder and into the urethra. The detrusor muscle will relax to allow the storage of urine in the urinary bladder.
What muscles hold the bladder in place?
Pelvic floor muscles
in men and women
A man’s pelvic floor muscles support his bladder and bowel. The urethra (urine tube) and the anus (back passage) all pass through the pelvic floor muscles. A woman’s pelvic floor muscles support the bladder, bowel and uterus (womb).
How do you strengthen your bladder muscles?
Kegel exercises
Kegel repetitions can strengthen your bladder muscles and improve your bladder control. To perform Kegel exercises, simply squeeze the muscles of your pelvic floor. If you’re unsure how to isolate these muscles, stop urinating mid-stream the next time you go to the bathroom.
What triggers the urinary reflex?
When the bladder is full of urine,
stretch receptors in the bladder wall
trigger the micturition reflex. The detrusor muscle that surrounds the bladder contracts. The internal urethral sphincter relaxes, allowing for urine to pass out of the bladder into the urethra. Both of these reactions are involuntary.
What relaxes the bladder?
Anticholinergic medicines help relax the muscles of the bladder. They include
oxybutynin (Oxytrol, Ditropan)
, tolterodine (Detrol), darifenacin (Enablex), trospium (Sanctura), and solifenacin (VESIcare). Beta agonist drugs can also help relax the muscles of the bladder.
Does the vagus nerve affect the bladder?
“
There is no evidence that vagal nerve innervates the urinary bladder
.” They closed their research investigation with this sentence: “The modulation of vagal nerve activity affect the urinary bladder function in naive (normal) conditions, as well as in case of (damaged or degenerative tissue disease).
How long should I hold a Kegel?
Hold tight and count
3 to 5 seconds
. Relax the muscles and count 3 to 5 seconds. Repeat 10 times, 3 times a day (morning, afternoon, and night).
How do you know if you have bladder problems?
- Bladder leakage.
- Pain or a burning sensation during urination.
- Cloudy urine.
- Persistent, strong urge to urinate.
- Urinating frequently in small amounts.
- Frequent urination (more than eight times during the day or more than two times at night)
- Urine that smells strong.
