Biology, asked by nikki2004, 1 year ago

Explain the excretion in humans as you are an excretory system also explain including function s of kidneys , ureters,bladder, renial vein , renial artery and urethra stepwise....plss

Answers

Answered by sijasubbiah
1
the excretory system of human being includes a pair of kidneys , a pair of ureters , a urinary bladder and a urethra. kidneys are located in the abdomen, one an either side of the backbone. urine produced in the kidneys passes through the ureters into the urinary bladder where it is stored until it is released through the urethra. nitrogenous waste such as urea or uric acid are removed from blood in the kidneys. each kidney has large number of these filtration units called nephrons packed close together. the urine forming in each kidney eventually enters a large tube , the ureter , which connects the kidney with the urinary bladder . urine is stored in the urinary bladder until the pressure of the expanded bladder leads to the urge to pass it out through the urethra.

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Answered by ShahidHussain
0
Hey ya
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The main excretory system in humans is the urinary system. The skin also acts as an organ of excretion by removing water and small amounts of urea and salts (as sweat). ... They remove urea, toxins, medications, and excess ions and form urine.The kidneys are two bean-shaped organs that extract waste from blood, balance body fluids, form urine, and aid in other important functions of the body. They reside against the back muscles in the upper abdominal cavity. They sit opposite each other on either side of the spine.The ureter is a tube that carries urine from the kidney to the urinary bladder. There are two ureters, one attached to each kidney. The upper half of theureter is located in the abdomen and the lower half is located in the pelvic area.The urinary bladder is a muscular sac in the pelvis, just above and behind the pubic bone. When empty, the bladderis about the size and shape of a pear. Urine is made in the kidneys, and travels down two tubes called ureters to the bladder. ... Urine exits thebladder into the urethra, which carries urine out of the body.
There are two renal veins, a left and a right. They branch off the inferior vena cava and drain oxygen-depleted blood from the kidneys. As they enter the kidneys, each vein separates into two parts.Arteries are numerous in your body. They are blood vessels that are responsible for (with a couple of exceptions) carrying oxygenated blood through the body. Your renal artery, then, is a blood vessel that carries oxygenated blood to your kidneys.The urethra is the tube that carries urine from the bladder to outside of the body. In males, it has the additional function of ejaculating semen when the man reaches orgasm. When the penis is erect during sex, the flow of urine is blocked from theurethra, allowing only semen to be ejaculated at orgasm.
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