The total number of openings for outgoing and incoming
of urine through the bladder is
Answers
Answer:
The organs, tubes, muscles, and nerves that work together to create, store, and carry urine are referred to as the urinary system, which is another name for the renal system. The renal system filters the plasma of blood and regulates blood volume by excreting excess water in the form of urine. Urine transport follows a path through the kidneys, ureters, bladder, and urethra, which are collectively known as the urinary tract.
Urine is essentially water, ions, and secreted molecules that leave the collecting duct of the many nephrons of the kidney and flow into the ureters. The ureters are two tubes that drain urine from the kidneys to the bladder. Each ureter is a muscular tube that drains into the bladder. Smooth muscle contractions in the walls of the ureters, over time, send the urine in small spurts into the bladder, the organ where urine is stored before it can be eliminated.
The bladder is a hollow muscular organ shaped like a balloon. It sits in the pelvis and is held in place by ligaments attached to other organs and the pelvic bones. The bladder stores urine until enough of it accumulates for removal from the body. It swells into a round shape when it is full and gets smaller when empty.
Nerves in the bladder are stimulated as the bladder fills with urine and becomes larger, which in turn stimulates the need to urinate. When you urinate, the brain signals the bladder muscles to tighten, squeezing urine out of the bladder. At the same time, the brain signals the sphincter muscles to relax. As these muscles relax, urine exits the bladder through the urethra and leaves the body through an opening in the genital region that contains the urethra. When all the signals occur in the correct order, normal urination occurs, removing urine from the body.
Explanation:
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The three openings in the bladder wall form a triangle or trigone. These are for the outgoing and incoming urine in the human body.
The two openings at the top of the posterior wall are the openings of the ureter. The lower opening is the starting point of the urethra.
Process of urine formation to its release:
From the calyx, urine from the kidneys travels down the ureter and is stored in the bladder (muscle sac of the lower abdomen). When a person urinates, urine exits the bladder and exits the body through another tubular structure, the urethra.
The correct path taken by urine is as follows.
Kidney → ureters → bladder → urethra
Urine is formed in three major steps: glomerular filtration, reabsorption, and secretion.
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