Which part of the small intestine opens into the large intestine?

The duct of the gall bladder in a rabbit is known as:

Where do certain symbiotic microorganisms normally occur in the human body?

Identify the location of gastric glands in the stomach.

$A$ $2$-year-old boy is admitted to play school. During a dental check-up,the dentist observes that the boy has $20$ teeth. Which teeth are absent?

Which teeth fall out in humans?