Nervous System

What is the primary function of the nervous system?

• Producing hormones

• Breaking down food for energy

• Transporting oxygen in the blood

• Controlling movement, processing information, and maintaining homeostasis

Neurons communicate using both electrical impulses and chemical signals.

• True
• False

Which of the following is an example of a reflex action?

• Writing your name on paper

• Answering a math problem

• Deciding what to eat for dinner

• Pulling your hand away from a hot surface

What are the two main parts of the nervous system?

• Brain and heart

• Central and peripheral nervous systems

• Sensory and motor neurons

• Spinal cord and muscles

What is the function of the spinal cord?

• To control voluntary muscle movement

• To produce neurotransmitters

• To relay messages between the brain and the rest of the body

• To regulate blood sugar levels

What is the basic unit of the nervous system?

• Neuron

• Tendon

• Hormone

• Muscle fiber

How do neurons send messages through the body?

• By releasing chemicals called enzymes

• By using electrical impulses and neurotransmitters

• By producing antibodies

• By generating heat

Which type of neuron carries information from the senses to the brain?

• Motor neuron

• Interneuron

• Reflex neuron

• Sensory neuron

Which type of neuron sends signals from the brain to muscles for movement?

• Motor neuron

• Reflex neuron

• Interneuron

• Sensory neuron

Reflexes are voluntary movements controlled by the brain.

• True
• False