Â© 2014 WebMD, LLC. All rights reserved. The urinary bladder is a muscular sac in the pelvis, just above and behind the pubic bone. When empty, the bladder is about the size and shape of a pear.Urine is made in the kidneys, and travels down two tubes called ureters to the bladder. The bladder stores urine, allowing urination to be infrequent and voluntary. The bladder is lined by layers of muscle tissue that stretch to accommodate urine.he normal capacity of the bladder is 400 to 600 mL. During urination, the bladder muscles contract, and two sphincters (valves) open to allow urine to flow out. Urine exits the bladder into the urethra, which carries urine out of the body.
Holbrook (Navajo: TÊ¼iisyaakin) is a city in Navajo County, Arizona, United States. According to the 2010 census, the population of the city was 5,053. The city is the county seat of Navajo County. Holbrook was founded in 1881 or 1882, when the railroad was built, and named to honor the first chief engineer of the Atlantic and Pacific Railroad.
The Painted Desert and Petrified Forest. Located 115 miles east of Flagstaff AZ Arizona near Holbrook, Arizona. The North entrance to the park is located off Interstate 40 and the South Entrance is off Highway 180.Tourists may enter and exit at either entrance location.he exit to the Petrified Forest and Painted Desert is about 15 miles east of Holbrook, Arizona. Actually the main body of the Petrified Forest lies between I40 to the south and Highway 180 to the south. Entrance and exits to the park can be from either the north or south side.