Identify the most suitable option from the following.
1. Which part of the reflex arc detects a stimulus?
2. Which of the following statements are true?
(i) Reflex actions help protect the body from harmful stimuli
(ii) Sensory neurons carry impulses from spinal cord to receptors
(iii) Muscles act as effector organs in reflex actions
(iv) Reflex actions occur quickly without conscious control
(i) Reflex actions help protect the body from harmful stimuli
(ii) Sensory neurons carry impulses from spinal cord to receptors
(iii) Muscles act as effector organs in reflex actions
(iv) Reflex actions occur quickly without conscious control