reflex arc

Question 1

in order reflex arc

Answer 1

Stimulus – receptor – sensory neuron – interneuron in spinal cord – motor neuron – effector - response

Question 2

what is the stimulus

Answer 2

The stimulus is a change in the internal or external environment that triggers a response.

Question 3

what is a receptor and examples

Answer 3

Receptors: groups of specialised cells that detect a change in environment (stimulus)
chemoreceptors, mechanoreceptors, photoreceptors and thermoreceptors

Question 4

sensory neuron

Answer 4

carry the electrical impulse from the receptors to the CNS which is where the inter/relay neuron is

Question 5

inter/relay neuron

Answer 5

take the electrical impulse from the sensory neuron and carry message through CNS back to PNS or the motor neuron

Question 6

motor neuron

Answer 6

: takes electrical impulse from the inter/relay neuron to effector to issue a response.

Question 7

effector

Answer 7

muscles, glands or organs that issue a response to the stimulus