Exploring the Nervous System

What is the main function of the human nervous system?

• To digest food

• To control and coordinate body activities

• To pump blood

• To produce hormones

Which of the following is a key term related to the nervous system?

• Chlorophyll

• Neuron

• Mitochondria

• Enzyme

What is an impulse in the context of the nervous system?

• A type of muscle

• An electrical signal that travels along nerve cells

• A hormone released by glands

• A part of the digestive system

Which cells are responsible for transmitting impulses in the nervous system?

• Red blood cells

• Neurons

• Skin cells

• Bone cells

Which of the following best describes the difference between voluntary and involuntary movement?

• Voluntary movements are automatic, involuntary movements are controlled by choice

• Voluntary movements are controlled by choice, involuntary movements happen automatically

• Both are controlled by choice

• Both happen automatically

If you touch a hot stove and quickly pull your hand away, what type of movement is this an example of?

• Voluntary movement

• Involuntary movement

• Both voluntary and involuntary movement

• Neither voluntary nor involuntary movement

Which part of the nervous system is mainly responsible for voluntary movements?

• Spinal cord

• Brain

• Heart

• Lungs

How do nerve cells (neurons) communicate with each other to transmit impulses?

• By sending blood

• By releasing chemicals and electrical signals

• By growing new cells

• By digesting food

Tags

NGSS.MS-LS1-3

Imagine a person is running and suddenly sees a rock in their path. Explain how the nervous system helps the person avoid tripping over the rock.

• The nervous system ignores the rock

• The nervous system sends impulses from the eyes to the brain, which then sends signals to the muscles to move and avoid the rock

• The nervous system makes the person stop running

• The nervous system only controls breathing

Tags

NGSS.MS-LS1-8

A student is learning to play the piano. At first, they have to think about each finger movement, but after practice, their fingers move automatically. What does this change show about the nervous system?

• The nervous system cannot learn new skills

• The nervous system can adapt and make movements more automatic with practice

• The nervous system only controls involuntary actions

• The nervous system stops working after practice