Reflex arc and reflex action

An example of a reflex action includes

• Touching a butterfly

• Brushing your hand against the side of your body

• Touching a hot stove

• Your legs moving as you walk

Tags

NGSS.MS-LS1-8

An effector is also known as a ____________ to an action

• Stimulus

• Sensory neuron

• Motor neuron

• Response

In a reflex arc, the sensory neuron leads to the ___________ and the motor neuron leads to the __________

• Spinal cord, CNS

• CNS, muscle

• Spinal cord, muscle

• Muscle, CNS

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

• Sensory, skin

• Sensory, muscle

• Motor, skin

• Intermediate, muscle

Tags

NGSS.MS-LS1-8

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

Name an effector in this diagram.

• A

• B

• D

• E

• F

Tags

NGSS.HS-LS1-3

Select two examples of effectors.

• Neuron

• Gland

• Muscle

• Receptor

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

Salivary glands are an example of ...

• A receptor
• A relay
• A detector
• An effector

What is the neuron found only in the spinal cord?

• Relay
• Sensory
• Motor
• Reflex