Experiment 16 — The Reflex Arc

Topic: Biology · Class 10 · Control and coordination: the nervous system

Aim: Arrange the five steps of the reflex that pulls your hand off a hot plate.

Daily: You snatch your hand back before you feel the pain. That gap — action first, sensation afterwards — is the reflex arc doing its job.

Question: In a reflex action, the command to move comes from the…

Exp: The spinal cord short-circuits the path so the response is immediate.

Question: The gap between two neurons is called a…

Exp: Chemicals carry the signal across it.

Question: Balance and precision of movement are controlled by the…

Exp: The medulla controls involuntary actions.

Question: Which hormone is released in an emergency?

Exp: It prepares the body for fight or flight.

Question: Bending of a shoot towards light is called…

Exp: Caused by uneven distribution of auxin.