what are ureters define it by also drawing a diagram
Answers
Answer:
Urinary system diagrams are illustrations of the urinary system, also referred to as the renal system. The urinary system, at a high level, contains two kidneys, two ureters, a urethra, and a bladder.
The urinary system is located directly below the rib cage. The kidneys are considered the primary organ of the urinary system and work in conjunction with the other urinary organs to rid the body of waste and urine.
The kidneys act as a filter for the blood, removing waste from them by producing urine. Blood is pumped and filtered through kidneys 400 times in a 24-hour period. The urinary system works together with the nervous system to relay signals to the brain when it is time to empty the bladder
Urinary Tract Diagram: A gender-specific visual representation of the urinary tract, these types of diagrams can contain specific parts of the urinary tract such as:
Urethra
Internal urethral sphincter
External urethral sphincter
Bladder
Kidney diagram
Kidney Diagram: An illustration of one or both of the kidneys. These diagrams regularly show main parts of the kidney
each ureter arises in the pelvis of a kidney (figure 19.4.3 ). it then passes down the side of the kidney and finally enters the back of the bladder. the walls of the ureters are composed of multiple layers of different types of tissues. you can see the layers in the figure below. the innermost layer is a special type of epithelium, called transitional epithelium. unlike the epithelium lining most organs, the transitional epithelium is capable of flattening and distending and does not produce mucus. it lines much of the urinary system, including the renal pelvis, bladder, and much of the urethra in addition to the ureters. transitional epithelium allows these organs to stretch and expand as they fill with urine or allow urine to pass through. the next layer of the ureter walls is made up of loose connective tissue containing elastic fibers, nerves, and blood and lymphatic vessels. after this layer are two layers of smooth muscles, an inner circular layer, and an outer longitudinal layer. the smooth muscle layers can contract in waves of peristalsis to propel urine down the ureters from the kidneys to the urinary bladder. the outermost layer of the ureter walls consists of fibrous tissue.
kidney anatomy
figure 19.4.3 : urine collects in the renal pelvis which is continuous with the ureter. the ureter then carries the urine from the kidney to the urinary bladder.
ureter crossection
figure 19.4.4 : this illustration shows a cross-section of a ureter. the white space inside is the lumen through which urine passes. from the lumen outward, the layers of the ureter wall include transitional epithelium, connective tissue, two layers of muscle fibers, and an outer layer of fibrous tissue.
urinary bladder
Summary
Ureters are tube-like structures that connect the kidneys with the urinary bladder. Each ureter arises at the renal pelvis of a kidney and travels down through the abdomen to the urinary bladder. The walls of the ureter contain smooth muscle that can contract to push urine through the ureter by peristalsis. The walls are lined with transitional epithelium that can expand and stretch.
The urinary bladder is a hollow, muscular organ that rests on the pelvic floor. It is also lined with transitional epithelium. The function of the bladder is to collect and store urine from the kidneys before the urine is eliminated through urination. Filling of the bladder triggers the sensation of needing to urinate. When a conscious decision to urinate is made, the detrusor muscle in the bladder wall contracts and forces urine out of the bladder and into the urethra.
The urethra is a tube that connects the urinary bladder to the external urethral orifice. Somatic nerves control the sphincter at the distal end of the urethra. This allows the opening of the sphincter for urination to be under voluntary control.
Answer:
The ureters are organs made of smooth muscles that propel urine from the kidneys to the urinary bladder. Your kidneys make urine by filtering wastes and extra water from your blood. 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.
Sometimes the ureters can become blocked or injured. This can block the flow of urine to the bladder. If urine stands still or backs up the ureter, you may get a urinary tract infections.