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What closes like a rubber band around the opening of the bladder?
The sphincter muscle closes like a rubber band around the opening of the bladder to prevent urine from leaking out. This muscle is controlled by nerves and can be consciously relaxed or contracted to release or hold urine in the bladder.
What are the Sensory and motor innervations of the skin of the sides and front of the body are provided by?
The sensory innervation of the skin of the sides and front of the body is primarily provided by the intercostal nerves. These nerves also contribute to motor innervation of the muscles between the ribs. Additionally, the skin of the front of the body receives sensory innervation from the anterior cutaneous branches of the thoracoabdominal nerves.
Which upper limb muscles has double innervation?
The flexor carpi ulnaris muscle is an upper limb muscle that has double innervation from both the ulnar and medial nerves.
Spinal nerves exiting the cord from the level of L4 to S4?
Spinal nerves exiting the cord from the level of L4 to S4 supply motor and sensory innervation to the lower extremities, including the buttocks, thighs, legs, and feet. They contribute to functions such as walking, standing, and bladder control. Damage to these nerves can lead to symptoms such as weakness, numbness, and pain in the lower body.
Where are ther nerves to the colon located in the spine?
The nerves that innervate the colon originate from the spinal levels T10-L2. These nerves form the superior mesenteric plexus, which supplies the colon with autonomic innervation.
Nerve supply of the urinary bladder?
The bladder receives motor innervation from both sympathetic fibers, most of which arise from the hypogastric plexuses and nerves, and parasympathetic fibers, which come from the pelvic splanchnic nerves and the inferior hypogastric plexus. Ahmed Urbizo
What closes like a rubber band around the opening of the bladder?
The sphincter muscle closes like a rubber band around the opening of the bladder to prevent urine from leaking out. This muscle is controlled by nerves and can be consciously relaxed or contracted to release or hold urine in the bladder.
What are the Sensory and motor innervations of the skin of the sides and front of the body are provided by?
The sensory innervation of the skin of the sides and front of the body is primarily provided by the intercostal nerves. These nerves also contribute to motor innervation of the muscles between the ribs. Additionally, the skin of the front of the body receives sensory innervation from the anterior cutaneous branches of the thoracoabdominal nerves.
What is a muscle that controls the release of urine?
The smooth muscle (caled the Detrousar muscle) that is part of the bladder contractsto help push urine out. The bladder also has two sphincters the internal, or involuntary and the external, or voluntary sphincters are also muscle.
Which upper limb muscles has double innervation?
The flexor carpi ulnaris muscle is an upper limb muscle that has double innervation from both the ulnar and medial nerves.
Nervous control of urination involves what mechanism?
Nervous control of urination involves the bladder mechanism. The bladder mechanism involves filling and releasing of the bladder. The mechanism is controlled by various muscles such as the pelvic floor muscle and sphincter muscles.
What is the spinal nerves related to the sacral plexus?
It provides innervation to the pelvis, its organs and the lower limb
Spinal nerves exiting the cord from the level of L4 to S4?
Spinal nerves exiting the cord from the level of L4 to S4 supply motor and sensory innervation to the lower extremities, including the buttocks, thighs, legs, and feet. They contribute to functions such as walking, standing, and bladder control. Damage to these nerves can lead to symptoms such as weakness, numbness, and pain in the lower body.
Where are ther nerves to the colon located in the spine?
The nerves that innervate the colon originate from the spinal levels T10-L2. These nerves form the superior mesenteric plexus, which supplies the colon with autonomic innervation.
Interval between arrival of water at the sphincter and the opening of the sphincter?
The interval between the arrival of water at the sphincter and the opening of the sphincter is controlled by the nervous system. This process involves sensory nerves detecting the presence of water in the rectum, which then signals motor nerves to relax the sphincter muscles, allowing for the passage of the water. The time it takes for this reflex to occur can vary among individuals based on factors like hydration levels and the sensitivity of their nervous system.
What is emptying the bladder controlled by?
The micturition reflex tells you when you need to empty your bladder. This happens on average four to eight times a day. The reflex is controlled by your central nervous system. When your bladder is about half full, the stretch receptors in the walls of your bladder become active and send signals along your pelvic nerves to your spinal cord. A reflex signal is sent back to your bladder, which makes the detrusor muscle in the bladder wall contract. The contraction increases the pressure in your bladder, and this is what makes you want to pass urine. Because the external sphincter is under voluntary control, you don't urinate until you decide to relax this muscle. simple answer would be this; Sphincter muscle that surrounds the urethra.
What stimulates micturition?
Reflex arc for micturition invovles the sensory input (the afferent neruon) to the spinal cord consisting of the stretch receptors located on the urinary bladder and the efferent neurons consisting of the parasympathetic (usually pelvic splanchincs). The pelvic splanchnic cause the detrusor muscle to contract. The reflex arc also contains an efferent somatic (pudendal nerve) output to the external sphincter which relaxes the external sphinctor and causes the urine to flow through the urethra. Again, this is a VERY broad overall gist of what goes on - there are a LOT of other factors that controls micturition such as the sympathetic control and the central nervous sytem (voluntary control). The reflex arc can be inhibited by a variety of factors and can also be initiated also under the central nervous control- the cortex and the brainstem. hope this helps. It should be noted that the reflex arc is at the S3, S4 and S5 spinal cord level. This is also the level where the pelvic splanchnic nerves come out the ventral primary rami to innervate the bladder.
