2.1.7 Here Comes the Hammer

The purpose of comparing reflex and reaction times in the study of the nervous system is to:

• Understand the speed of neural responses

• Measure the strength of muscle contractions

• Evaluate the efficiency of the circulatory system

• Determine the accuracy of sensory perception

Tags

NGSS.MS-LS1-8

Aging impacts reflex and reaction times by:

• Increasing them

• Decreasing them

• Having no effect

• Improving them

What are the steps involved in collecting, analyzing, and interpreting experimental data to draw conclusions?

• Formulate a hypothesis, conduct experiments, analyze data, draw conclusions

• Collect data, ignore results, publish findings

• Analyze data, draw conclusions, then collect data

• Draw conclusions, then conduct experiments, and finally formulate a hypothesis

Tags

NGSS.MS-ETS1-3

NGSS.MS-PS1-2

Explain the difference between voluntary and involuntary responses.

• Voluntary responses are conscious actions, while involuntary responses are automatic.

• Voluntary responses are automatic, while involuntary responses are conscious actions.

• Both voluntary and involuntary responses are conscious actions.

• Both voluntary and involuntary responses are automatic.

What initiates the patellar reflex?

• A tap on the knee

• A loud noise

• A flash of light

• A sudden movement

Tags

NGSS.MS-LS1-8

The tap has what effect on the quadriceps muscle?

• It strengthens the muscle.

• It relaxes the muscle.

• It has no effect on the muscle.

• It causes muscle contraction.

Where does the nerve impulse travel after it begins?

• To the brain

• To the spinal cord

• Along the axon

• To the synapse

What happens to the motor neurons in the spinal cord during the reflex arc?

• They become inactive.

• They transmit signals to muscles.

• They send signals to the brain.

• They process sensory information.

The role of motor neurons in the reflex arc is to:

• Transmit signals from the brain to the muscles

• Carry sensory information to the brain

• Integrate sensory and motor information

• Detect changes in the environment

What is the role of the sensory neuron in the reflex arc?

• To transmit signals from the brain to the muscles

• To carry signals from sensory receptors to the central nervous system

• To process information and make decisions

• To connect motor neurons to interneurons

Tags

NGSS.MS-LS1-8