[18 Jul] S3: The Nervous System & The Eye II

Which of the following correctly describes reflex action?

• a delayed response to a specific stimulus with conscious control

• a delayed response to a specific stimulus without conscious control

• an immediate response to a specific stimulus with conscious control

• an immediate response to a specific stimulus without conscious control

Which of the following is/are characteristic(s) of a reflex action? Select all that apply.

• automatic

• deliberate

• involuntary

• rapid

Which of the following is/are example(s) of cranial reflexes?

• blinking

• knee-jerk reflex

• pupil reflex

• salivation

Which of the following correctly describes a reflex arc?

• the longest pathway by which nerve impulses travel from the receptor to the effector in a reflex action

• the shortest pathway by which nerve impulses travel from the receptor to the central nervous system in a reflex action

• the shortest pathway by which nerve impulses travel from the central nervous system to the effector in a reflex action

• the shortest pathway by which nerve impulses travel from the receptor to the effector in a reflex action

Which of the following correctly shows the shortest pathway in a reflex action?

• receptor → sensory neurone → relay neurone (PNS) → effector

• receptor → sensory neurone → relay neurone (CNS) → motor neurone → effector

• receptor → relay neurone (CNS) → motor neurone → effector

• receptor → relay neurone (CNS) → effector