Dentin composes most of the root, which normally has pulp canals. The roots of teeth may be single in number (single-rooted teeth) or multiple. Canines and most premolars, except for maxillary first premolars, usually have one root. Maxillary first premolars and mandibular molars usually have two roots.
Ureter. 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 the ureter is located in the abdomen and the lower half is located in the pelvic area.The ureter is about 10 to 12 inches long in the average adult.The tube has thick walls composed of a fibrous, a muscular, and a mucus coat, which are able to contract. Ureter disorders include:he upper half of the ureter is located in the abdomen and the lower half is located in the pelvic area. The ureter is about 10 to 12 inches long in the average adult. The tube has thick walls composed of a fibrous, a muscular, and a mucus coat, which are able to contract. Ureter disorders include:
Best Answer: Ureters are the connecting tube of the kidney and the urinary bladder. The urine originating from the kidney goes through the ureter to reach the urinary bladder. Urinary Bladder is the temporary storage organ of the urine before it goes through the urethra.reters is the tube that gives urine to the bladder.Ureters connect the kidney and bladder.The bladder is a place where the urine is place and wait until it is let out.The urethra is a tube that let the urine out of the body to the bathroom. Source(s): My brain and 7 grade science book. Jacky Â· 6 years ago. Thumbs up.