Home » Health

Anatomy of the Urinary System - How and Why it Works

Aug 17, 2007
Here is a brief anatomy of the urinary system. The food that we consume contains nutrients that are used by our body as a means of energy. After all the useful contents of what we consume are converted into a form that the human body can use, the remnants need to be removed from the body.

Some waste goes into the blood while most of it is left in the bowels. The urinary system and the kidneys keep the water and the chemicals in balance by cleaning up "urea" from the blood. Urea is the name given to wastes produced when certain foods like meat, poultry, and some vegetables are digested. The blood stream carries the urea into the kidneys.

The kidneys are two purple-brown organs that are located below the ribs. The purpose of the kidneys is to clean the urea from the blood and convert it into urine, maintain a balance between salts and other blood chemicals, and produce the erythropoietin hormone that helps with the production of red blood cells.

The kidneys contain small filters known as nephrons that extricate urea from the blood. Urea passes through the nephrons along with water and other wastes and gets converted into urine. There are two ureters, one for each kidney, that are basically narrow tubes providing a passageway for the urine from the kidneys to the bladder.

The ureter tube muscles are always tightening and loosening in a flexing motion that pushes the urine away from the kidneys and towards the bladder. Any trouble with the ureter tubes will halt urine flow leading to kidney infection. Urine is being constantly pushed down by the ureters every 10-15 seconds.

The bladder is triangular, hollow, and located in the lower abdomen. Ligaments hold it place by attaching to pelvic bones and other organs. The bladder has a limited flexibility to expand in order to store urine. The muscles in the bladder wall contract and flatten during urination.

A healthy adult bladder can store nearly two cups of urine from 2-5 hours. The bladder opening has two muscles known as sphincter muscles. These circular muscles act just like tight rubber bands around the bladder mouth and prevent any urine leakage. The bladder is provided with nerves that alert the individual when it is time to urinate.

The urethra is the tube that allows urine to exit the body. The normal urination process is the nerve signal generated by the bladder to the brain that causes the brain to order the bladder muscles to contract and the sphincter muscles to relax, squeezing the urine out of the bladder and out through the urethra.

Depending the type and quantity of fluids consumed in one day, adults may pass approximately 1 and one half quarts of urine in a 24 hour period. The quantity of urine produced in daytime is nearly double the quantity produced at night. In a normal human body, urine is sterile. It contains no bacteria, virus, or fungi, only fluids, salts, and waste products.
About the Author
The Gall Bladder Directory can help you
understand your Urinary System and the importance of maintaining a healthy and clean
Bladder. To find out more about the your Urinary System and Bladder visit
The Bladder Directory
Please Rate:
(Average: Not rated)
Views: 313
Print Email Share
Article Categories
    • Artists
    • Gambling
    • Humanities
    • Humor
    • Movies
    • Music
    • Photography
    • Tattoos
    • Television
    • Classic Cars
    • Motorcycles
    • Recreational Vehicles
    • SUVs
    • Trucks
    • Vans
    • Branding
    • Business Opportunities
    • Careers and Jobs
    • Corporate
    • Customer Service
    • Direct Mail
    • Entrepreneurship
    • Ethics
    • Financing
    • Franchising
    • Home-Based Business
    • Human Resources
    • Import and Export
    • Leadership
    • Management
    • Market Research
    • Marketing and Advertising
    • Negotiation
    • Network Marketing
    • Networking
    • Organizational
    • Presentation
    • Project Management
    • Public Relations
    • Small Business
    • Strategic Planning
    • Team Building
    • Telemarketing
    • Training
    • Data Recovery
    • Databases
    • Games
    • Hardware
    • Networks
    • Operating Systems
    • Programming
    • Security
    • Software
    • Spyware and Viruses
    • Ask an Expert
    • College and University
    • Home Schooling
    • K-12
    • Languages
    • Online Education
    • Psychology
    • Accounting
    • Credit
    • Currency Trading
    • Debt Consolidation
    • Insurance
    • Investing
    • Leasing
    • Loans
    • Mortgage
    • Mutual Funds
    • Personal Finance
    • Stock Market
    • Structured Settlements
    • Taxes
    • Wealth Building
    • Coffee
    • Cooking
    • Gourmet
    • Recipes
    • Wine and Spirits
    • Arts and Crafts
    • Babies
    • Collecting
    • Elderly Care
    • Genealogy
    • Hobbies
    • Parenting
    • Pets
    • Pregnancy
    • Woodworking
    • Feng Shui
    • Gardening
    • Home Appliances
    • Home Security
    • Interior Design
    • Landscaping
    • Affiliate Programs
    • Article Marketing
    • Auctions
    • Audio
    • Banner Advertising
    • Blogging
    • Broadband
    • Domain Names
    • E-Books
    • E-Commerce
    • Email Marketing
    • Ezines and Newsletters
    • Forums
    • Internet Marketing
    • Link Popularity
    • Pay-Per-Click
    • Podcasting
    • RSS
    • Search Engine Marketing
    • Search Engine Optimization
    • Security
    • Social Media
    • Spam
    • Video
    • Viral Marketing
    • Web Design
    • Web Development
    • Web Hosting
    • Copyright
    • Cyber Law
    • Intellectual Property
    • National, State, Local
    • Patents
    • Regulatory Compliance
    • Trademarks
    • Buying
    • Selling
    • Baseball
    • Basketball
    • Boating
    • Cycling
    • Extreme Sports
    • Fishing
    • Football
    • Golf
    • Hockey
    • Hunting
    • Martial Arts
    • Running
    • Scuba Diving
    • Soccer
    • Swimming
    • Tennis
    • Dating
    • Divorce
    • Marriage
    • Weddings
    • Astrology
    • Buddhism
    • Christianity
    • Faith
    • Hinduism
    • Islam
    • Judaism
    • Meditation
    • Metaphysical
    • New Age
    • Cable and Satellite TV
    • Cell Phones
    • Communication
    • Gadgets and Gizmos
    • GPS
    • Satellite Radio
    • Video Conferencing
    • VoIP
    • Addictions
    • Coaching
    • Goal Setting
    • Motivational
    • Stress Management
    • Time Management
    • Clothing
    • Electronics
    • Fashion
    • Gifts
    • Jewelry
    • Causes and Organizations
    • Environment
    • History
    • Holidays
    • Men's Issues
    • Nature
    • Philosophy
    • Politics
    • Women's Issues
    • World Affairs
    • Air Travel
    • Camping
    • Cruises
    • Destinations
    • Outdoors
    • Article Writing
    • Book Reviews
    • Copywriting
    • Fiction
    • Non-Fiction
    • Poetry
    • Quotes
    • Screenplay
    • Tools and Resources