Location of Bladder and Prostate
Bladder
The bladder is a hollow, muscular organ that stores urine. It is located in the lower abdomen, just behind the pubic bone. The bladder is connected to the kidneys by the ureters, which carry urine from the kidneys to the bladder. The bladder is also connected to the urethra, which carries urine from the bladder to the outside of the body.
The bladder is made up of three layers of muscle. The outer layer is called the detrusor muscle. The detrusor muscle contracts to squeeze urine out of the bladder. The middle layer is called the trigone. The trigone is a triangular-shaped area at the base of the bladder. The trigone contains the urethral orifice, which is the opening of the urethra into the bladder. The inner layer is called the mucosa. The mucosa is a thin, moist layer of tissue that lines the inside of the bladder.
The bladder is supplied by blood from the inferior vesical artery. The inferior vesical artery is a branch of the internal iliac artery. The bladder is innervated by nerves from the pelvic plexus. The pelvic plexus is a network of nerves that innervates the organs of the pelvis.
Prostate
The prostate is a small, walnut-shaped gland that surrounds the urethra in males. The prostate is located just below the bladder. The prostate produces fluid that helps to protect sperm. The prostate also helps to control the flow of urine.
The prostate is made up of three lobes: the left lobe, the right lobe, and the posterior lobe. The left and right lobes are located on either side of the urethra. The posterior lobe is located behind the urethra. The prostate is surrounded by a capsule of connective tissue.
The prostate is supplied by blood from the prostatic arteries. The prostatic arteries are branches of the internal iliac artery. The prostate is innervated by nerves from the pelvic plexus. The pelvic plexus is a network of nerves that innervates the organs of the pelvis.
Innervation of the Bladder and Prostate
The bladder and prostate are innervated by nerves from the pelvic plexus. The pelvic plexus is a network of nerves that innervates the organs of the pelvis. The pelvic plexus is made up of nerves from the sympathetic and parasympathetic nervous systems.
The sympathetic nervous system is responsible for the "fight or flight" response. The sympathetic nervous system causes the bladder to relax and the prostate to contract. This helps to prevent urine from being released during times of stress.
The parasympathetic nervous system is responsible for the "rest and digest" response. The parasympathetic nervous system causes the bladder to contract and the prostate to relax. This helps to facilitate the release of urine.
Blood Supply to the Bladder and Prostate
The bladder and prostate are supplied by blood from the internal iliac artery. The internal iliac artery is a branch of the common iliac artery. The common iliac artery is a branch of the abdominal aorta.
The internal iliac artery gives off several branches that supply the bladder and prostate. These branches include the superior vesical artery, the inferior vesical artery, and the prostatic arteries.
The superior vesical artery supplies blood to the upper part of the bladder. The inferior vesical artery supplies blood to the lower part of the bladder. The prostatic arteries supply blood to the prostate.
Lymphatic Drainage of the Bladder and Prostate
The bladder and prostate are drained by lymph nodes in the pelvis. These lymph nodes are located along the course of the internal iliac artery. The lymph nodes in the pelvis filter out bacteria and other harmful substances from the bladder and prostate.
Age-Related Changes in the Bladder and Prostate
As men age, the prostate gland tends to enlarge. This is known as benign prostatic hyperplasia (BPH). BPH can cause difficulty urinating, including a weak stream, a hesitant start to urination, and a frequent need to urinate.
In women, the bladder can become weakened as they age. This can lead to urinary incontinence, which is the involuntary loss of urine.
Conclusion
The bladder and prostate are important organs in the urinary system. The bladder stores urine, while the prostate produces fluid that helps to protect sperm. The bladder and prostate are innervated by nerves from the pelvic plexus and receive blood from the internal iliac artery. As men age, the prostate gland tends to enlarge, which can cause difficulty urinating. In women, the bladder can become weakened as they age, which can lead to urinary incontinence.
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