1. what part of a nerve cell insulates nd speeds up nerve impulses
- myelin sheath
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Other questions in this quiz
2. what are the two most sensitive parts of the body?
- back of neck and forearm
- fingertip and lip
- forehead and lip
- fingertip and forehead
3. give the kingdom of a human
4. if you had parents who were both "Tt", how many of the 3 children will be TT?
5. what kind of variation is eye colour?