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The esophagus connects to the stomach at an opening in the diaphragm called the hiatus. The lower esophageal sphincter (LES)

The lower digestive system includes the last part of the small intestine, the large intestine (ascending colon, transverse colon

The two ovaries are small glands that produce eggs and release hormones. Each ovary is attached to the uterus by a ligament. About

The prostate is part of the male reproductive system. It's a small, walnut-shaped organ that produces most of the fluid in semen

An infant's first teeth are called baby teeth or primary teeth. They usually start to come in (erupt) between 6 months and 12

What is color blindness? Color blindness is a vision problem that means you have trouble seeing shades of red, green, or blue or a

Secondary teeth come in (erupt) when children begin to lose their primary (baby) teeth between the ages of 6 and 11 years. The

The bones (vertebrae) that form the spine (backbone) are cushioned by small, round, flat discs. When these discs are damaged from

The female urinary system, or the urinary tract, includes the kidneys, the ureters, the bladder, and the urethra. The kidneys

Provides info on basic dental care like brushing and flossing regularly, seeing your dentist or dental hygienist for regular