2.2.3 Reflex Action

Reflex actions are important because

• They provide a quick, involuntary response

• They prevent injury

• They are essential to the survival of organisms

• All of the above

Select two examples of effectors.

• Neuron

• Gland

• Muscle

• Receptor

An effector is also known as a ____________ to an action

• Stimulus

• Sensory neuron

• Motor neuron

• Response

How is a reflex arc different than other voluntary movements?

• A reflex arc takes the same path as a voluntary action

• A reflex a travels from a sensory neuron to the spinal cord then to a motor neuron, skipping the brain

• A reflex arc takes longer than a voluntary action

• There is no difference between a reflex arc and a voluntary action

If you pick up a hot plate _____________ receptors in your ___________ detect this change

• Sensory, skin

• Sensory, muscle

• Motor, skin

• Intermediate, muscle