Put the reflex arc in the correct order.
Answer and explanation
Correct answer: D. Receptor, sensory neurone, relay neurone, motor neurone, effector
- Step 1: A stimulus is detected by a receptor.
- Step 2: The impulse passes along the sensory neurone, the relay neurone and the motor neurone to the effector.
Answer
Receptor, sensory neurone, relay neurone, motor neurone, effector.
Why not the others: Receptor, motor neurone, relay neurone, sensory neurone, effector: the sensory and motor neurones are swapped. Effector, sensory neurone, relay neurone, motor neurone, receptor: the receptor and effector are swapped. Receptor, relay neurone, sensory neurone, effector, motor neurone: the neurones are out of order.
Practise more Cell Biology and Multicellular Organisms.
Free questions with an explanation for every one, and full timed National 5 (Scotland) mock tests.
More Cell Biology and Multicellular Organisms questions
- Which cell structure controls the activities of an animal cell and contains the genetic material?
- Which structure is found in a plant cell but not in an animal cell?
- What is the function of ribosomes?
- Yeast is a single-celled fungus. Which feature do its cells share with plant cells but not with animal cells?
- Bacterial cells differ from animal cells because bacterial cells
- What is diffusion?