Urinary system
- Kidneys. The human body has two kidneys, one on either side of the middle back, just under the ribs. ...
- Ureters. Each kidney has a tube called a ureter. ...
- Bladder. The bladder is a hollow organ that sits inside the pelvis. ...
- Urethra. The urethra is the small tube connecting the bladder to the outside of the body. ...
- Common problems. ...
What are the organs of the urinary system?
The urinary system's function is to filter blood and create urine as a waste by-product. The organs of the urinary system include the kidneys, renal pelvis, ureters, bladder and urethra. The body takes nutrients from food and converts them to energy.
What are the two parts of the urethral system?
The system is divisible into upper and lower parts. The upper part located within the abdomen and consists of the kidneys and a large portion of the ureters. The lower part constitutes the pelvic urinary organs, and includes the short portion of the ureters, the urinary bladder and the urethra.
How many ureters are there in the human body?
There are two ureters in total. Each one is a muscular duct of 25 – 30 cm in length with narrow lumen, that carries urine from the kidney to the urinary bladder and also connects the two structures.
How does the urinary system work?
How does the urinary system work? The urinary system's function is to filter blood and create urine as a waste by-product. The organs of the urinary system include the kidneys, renal pelvis, ureters, bladder and urethra. The body takes nutrients from food and converts them to energy. After the body has taken the food components that it needs, ...
What are the 4 organs of the urinary system quizlet?
Organs of the urinary system are the kidneys, ureters, bladder, and urethra.
Which is the main organ of urinary system?
Bladder. The bladder is a triangle-shaped, hollow organ located in the lower abdomen. It is held in place by ligaments attached to the pelvic bones. The bladder's walls relax and expand to store urine, and contract and flatten to empty urine through the urethra.
What are the 4 main functions of the urinary system?
The purpose of the urinary system is to eliminate waste from the body, regulate blood volume and blood pressure, control levels of electrolytes and metabolites, and regulate blood pH.
What are the 3 main parts of the urinary system?
The kidneys, ureters, bladder and urethra make up the urinary system. They all work together to filter, store and remove liquid waste from your body.
What is another name for the urinary system?
The urinary system, also known as the renal system, produces, stores and eliminates urine, the fluid waste excreted by the kidneys. The kidneys make urine by filtering wastes and extra water from blood. Urine travels from the kidneys through two thin tubes called ureters and fills the bladder.
What is the urethra?
(yoo-REE-thruh) The tube through which urine leaves the body. It empties urine from the bladder.
What is the ureter?
The urine travels from the kidneys to the bladder in two thin tubes called ureters. The ureters are about 8 to 10 inches long. Muscles in the ureter walls tighten and relax to force urine down and away from the kidneys. Small amounts of urine flow from the ureters into the bladder about every 10 to 15 seconds.
What is not an organ of the urinary system?
Detailed Solution. The correct answer is option 3 i.e. Bronchi. The organs of the urinary system include the kidneys, renal pelvis, ureters, Urinary bladder and urethra.
How many ureters are there in the body?
Two ureters. These narrow tubes carry urine from the kidneys to the bladder. Muscles in the ureter walls continually tighten and relax forcing urine downward, away from the kidneys. If urine backs up, or is allowed to stand still, a kidney infection can develop. About every 10 to 15 seconds, small amounts of urine are emptied into the bladder from the ureters.
What is the function of the kidneys and urinary system?
The kidney and urinary systems help the body to eliminate liquid waste called urea, and to keep chemicals, such as potassium and sodium, and water in balance. Urea is produced when foods containing protein, such as meat, poultry, and certain vegetables, are broken down in the body. Urea is carried in the bloodstream to the kidneys, where it is removed along with water and other wastes in the form of urine.
How does the urinary system work?
The urinary system's function is to filter blood and create urine as a waste by-product. The organs of the urinary system include the kidneys, renal pelvis, ureters, bladder and urethra.
What muscles help keep urine from leaking?
Two sphincter muscles. These circular muscles help keep urine from leaking by closing tightly like a rubber band around the opening of the bladder. Nerves in the bladder. The nerves alert a person when it is time to urinate, or empty the bladder. Urethra.
What tube allows urine to pass outside the body?
Urethra. This tube allows urine to pass outside the body. The brain signals the bladder muscles to tighten, which squeezes urine out of the bladder. At the same time, the brain signals the sphincter muscles to relax to let urine exit the bladder through the urethra.
How do kidneys remove urea from the blood?
Release hormones to regulate blood pressure. Control production of red blood cells. The kidneys remove urea from the blood through tiny filtering units called nephrons.
What is the ball of urine called?
Each nephron consists of a ball formed of small blood capillaries, called a glomerulus, and a small tube called a renal tubule. Urea, together with water and other waste substances, forms the urine as it passes through the nephrons and down the renal tubules of the kidney. Two ureters.
What is the function of the urinary system?
The main urinary system function is to filter the blood of excess water, salts, and waste products, temporarily store these within a reservoir, and intermittently expel these products from the body.
How Does the Urinary System Work?
How the urinary system works is relatively simple, although the supplementary roles of the kidneys can be complex .
What muscle is involved in the expulsion of urine from the body?
The image below shows the stages of micturition and the muscles involved, namely the detrusor muscle of the urinary bladder, the internal urethral sphincter, and the pelvic floor muscle which surrounds the external sphincter.
What muscle is used to prevent urine from leaking out?
These only relax during micturition and otherwise prevent urine from constantly leaking out. The internal sphincter is an involuntary muscle; the external sphincter is voluntary. The urinary bladder is lined by a thick mucosa which forms folds when the bladder is empty but opens out as the bladder fills and expands.
What is the triangular shaped bladder?
The triangular shaped bladder is a large muscle into the top of which the two ureters empty the urine. Under the bladder, close to where it connects to a single urethra, lie two circular sphincters – internal and external. These only relax during micturition and otherwise prevent urine from constantly leaking out. The internal sphincter is an involuntary muscle; the external sphincter is voluntary. The urinary bladder is lined by a thick mucosa which forms folds when the bladder is empty but opens out as the bladder fills and expands.
How long is the ureter tube?
Ureters are two narrow but relatively long tubes (approximately 25 – 30 cm) which leave the kidneys and enter the urinary bladder.
Why does urine not flow back to the kidneys?
Once the urine is transported into the bladder it does not flow back due to directional forces of the ureter muscle layers and the flattened ends of the ureters where ureter and bladder meet (the vesicoureteral junction). This flattening increases as the bladder fills, making it difficult for urine to flow back towards the kidneys. However, this can occur in cases of vesicoureteral reflux due to anatomical abnormalities in ureteral positioning at the vesicoureteral junction or in nerve disorders where peristalsis and muscle tone are affected.
What is the urinary system?
Urinary System Anatomy and Function. The body takes what it needs from food and changes it into energy. After this, waste products are left behind in the bowel and in the blood. The urinary system keeps everything in balance by removing waste, like urea, extra salt, extra water and other things the body does not need..
What are the functions of the kidneys?
Their function is to: Remove waste from the blood in the form of urine. Keep substances stable in the blood. Make erythropoietin, a hormone which helps make red blood cells. Make vitamin D active.
Which muscle is responsible for letting urine out of the bladder?
Urethra . The tube that allows urine to pass outside the body. The brain signals the bladder muscles to tighten, which squeezes urine out of the bladder. At the same time, the brain signals the sphincter muscles to relax to let urine exit the bladder through the urethra.
Where is the bladder located?
Bladder. The bladder is a triangle-shaped, hollow organ located in the lower abdomen. It is held in place by ligaments attached to the pelvic bones. The bladder's walls relax and expand to store urine, and contract and flatten to empty urine through the urethra.
What is the name of the substance that forms urine?
Urea, together with water and other wastes, forms the urine.
What is the name of the tube that drains urine?
Each nephron is made up of a ball of small blood capillaries, called a glomerulus. There is also a small tube called a renal tubule, which drains the urine and joins other tubules carrying the urine out of the kidney to the ureter.