What Type Of Receptors Embedded In The Urinary Bladder Wall Initiate The Micturition Reflex?

What activates macula densa?

Macula densa cells sense changes in sodium chloride level, and will trigger an autoregulatory response to increase or decrease reabsorption of ions and water to the blood (as needed) in order to alter blood volume and return blood pressure to normal..

What should not be found in filtrate?

Blood proteins and blood cells are too large to pass through the filtration membrane and should not be found in filtrate. Tubular reabsorption begins in the glomerulus. Most reabsorption occurs in the proximal convoluted tubule of the nephron.

What is the correct order for the path of urine drainage?

The urinary bladder is a hollow, muscular, and elastic organ that stores urine. Urine exits the bladder and the body through the urethra. The kidneys, ureters, bladder, and urethra make up the urinary tract, the pathway through which urine flows and is eliminated from the body.

Which structure is most important for urine concentration quizlet?

(The loop of the nephron, especially as it passes through the medulla, is the place where urine can be most concentrated if the body conditions require water retention.)

What is the macula densa cells respond to?

Macula densa cells in the distal nephron, according to the classic paradigm, are salt sensors that generate paracrine chemical signals in the juxtaglomerular apparatus to control vital kidney functions, including renal blood flow, glomerular filtration, and renin release.

How do you fix nerve damage in the bladder?

Surgical Treatments If lifestyle or medical treatments do not work, your health care provider may suggest surgery. For patients with overactive bladder symptoms, a surgery called sacral neuromodulation (SNS) is the only surgery available. SNS targets the nerves carrying signals between the spinal cord and the bladder.

What does neurogenic bladder feel like?

The most common symptom of neurogenic bladder is being unable to control urination. Other symptoms include: A weak or dribbling urinary stream. Frequent urination (urinating eight or more times daily)

Can spinal problems cause bladder problems?

Spinal disorders or injuries that cause nerve compression or damage may cause Neurogenic Bladder Disorder (NBD); also termed Bladder Dysfunction. NBD means the patient has problems with urination. The term neurogenic refers to the nerve tissues that supply and stimulate an organ or muscle to function properly.

Which of the following acts as the trigger for the initiation of micturition?

Smooth muscle stretch initiates the micturition reflex by activating stretch receptors in the bladder wall. This autonomic reflex causes the detrusor muscle to contract and the internal urethral sphincter muscle to relax, allowing urine to flow into the urethra.

What initiates the micturition reflex quizlet?

What initiates the micturition reflex? Stretch receptors in the wall of the urinary bladder signal the sacral region of the spinal cord.

What nerve Innervates the urinary bladder?

The lower urinary tract is innervated by 3 sets of peripheral nerves: pelvic parasympathetic nerves, which arise at the sacral level of the spinal cord, excite the bladder, and relax the urethra; lumbar sympathetic nerves, which inhibit the bladder body and excite the bladder base and urethra; and pudendal nerves, …

Which part of the brain controls the micturition reflex?

The micturition reflex is a bladder-to-bladder contraction reflex for which the reflex center is located in the rostral pontine tegmentum (pontine micturition center: PMC). There are two afferent pathways from the bladder to the brain. One is the dorsal system and the other is the spinothalamic tract.