m2 reflex arc

Which of the following situations is likely to stimulate a reflex action?

• Touching a butterfly

• Brushing your hand against the side of your body

• Touching a hot stove

• Walking

Tags

NGSS.MS-LS1-8

X and Y are both neurons found in the the peripheral nervous system. Which of the following options is correct?

• X is a motor neuron; Y is a sensory neuron

• Y is a motor neuron; X is a motor neuron

• Y is a motor neuron; X is a sensory neuron

• X is a sensory neuron; Y is a sensory neuron

What name is given to the fatty material (produced by Schwann cells) that increases the speed of impulse transmission in the neuron from ca. 2 m/s to up to 150 m/s? (6 letters)

Drag and drop the labels into the correct positions on the diagram.

f

e

d

c

b

a

nerve ending

soma/cell body

myelin sheath

node of Ranvier

axon

dendrite

Tags

NGSS.MS-LS1-2

Drag and drop the labels.

f

e

d

c

b

a

stimulus

motor neuron

receptor

effector

sensory neuron

response

Tags

NGSS.MS-LS1-8

A reflex arc is a rapid response that happens automatically. It starts with a ​ (a)   , like touching something hot

Special sensors called ​ (b)   detect the stimulus and send an ​ (c)   to the spinal cord

The spinal cord acts like a messenger and quickly sends the message to a ​ (d)  

The motor neuron then tells the muscles, called ​ (e)   , what to do

• stimulus
• sensory neurons
• impulse
• motor neuron
• effectors
• response
• reflex

Tags

NGSS.MS-LS1-8

Which of the following is not involved in a reflex action?

• CNS

• Receptors

• Effectors

• The Brain

The diagram shows a nerve cell from the peripheral nervous system. Which of the options is correct?

• A

• B

• C

• D

Tags

NGSS.MS-LS1-2

In this reflex arc, which of the following contains receptors?

• The back of the eye

• The spinal cord

• The iris

• The pupil

Tags

NGSS.MS-LS1-8

Where is the motor neuron in this reflex arc?

• A

• B

• C

• D