A junction between two nerve cells, consisting of a minute gap across which impulses pass by diffusion of a neurotransmitter.
Question 2
Question
The receptors are found in [blank_start]sense organs[blank_end]: the [blank_start]eyes[blank_end], the [blank_start]ears[blank_end], the [blank_start]nose[blank_end], the [blank_start]mouth[blank_end] and the [blank_start]skin[blank_end].
Answer
sense organs
eyes
ears
nose
mouth
skin
Question 3
Question
[blank_start]Sensory neurons[blank_end] carry impulses from the receptors to the CNS. [blank_start]Motor neurons[blank_end] carry impulses from the CNS to effector organs, which may be muscles or glands.
Answer
Sensory neurons
Motor neurons
Question 4
Question
The main steps in reflex actions are:
1. A receptor detects a stimulus.
2. A sensory neutron transmits the impulse to the CNS.
3. A relay neutron passes the impulse on.
4. A motor neurone is stimulated.
5. The impulse passes to an effector.
6. Action is taken.