The answer is Integumentary System. it is the organ framework that shields the body from different sorts of harm, for example, loss of water or scraped spot from outside. The framework involves the skin and its limbs.
The integumentary system comprises of the skin, hair, nails, organs, and nerves. Its principal work is to go about as a hindrance to shield the body from the outside world. It additionally capacities to hold body liquids, ensure against ailment, dispense with squandering items, and direct body temperature.
Parotid beacuse it include both sublingual and submandible and present near the ear
It makes a longitudinal wave because it stretches and compresses while it slithers forward
The answer is external stimulus
No Spanish sorry about that
