The Nervous System

True or False: The brain is the body's largest organ.

• True

• False

True or False: The largest part of the brain is the cerebrum.

• False

• True

True or False: The medulla is responsible for speech and balance.

• True

• False

The spinal cord is about as big around as your thumb.

• True

• False

A neuron is a nerve cell that is specialized to transfer messages in the form of fast-moving

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Tags

NGSS.MS-LS1-2

A nerve is a collection of _____ bundled together with blood vessels and connective tissue.

Tags

NGSS.MS-LS1-3

What are the functions of the peripheral nervous system (PNS)? Check all that apply.

• Connects all parts of the body to the CNS.

• Transfers nerve cells.

• Uses nerves to carry information between the body and the CNS.

• Is surrounded by protective bones.

Someone touches your shoulder and you turn around. Which sequence do your impulses follow?

• motor neuron, sensory neuron, CNS response

• motor neuron, CNS response, sensory neuron

• sensory neuron, motor neuron, CNS response

• sensory neuron, CNS response, motor neuron

What is the function of the cerebrum?

• It controls involuntary processes.

• It keeps track of the body's position and helps maintain balance.

• It controls thinking, sensing, and voluntary movement.

• It has two motor nerves - somatic and autonomic.

What is the function of the cerebellum?

• Controls involuntary processes.

• Has sensory receptors that detect information about the body.

• Controls thinking, sensing, and voluntary movement.

• It keeps track of the body's position and helps maintain balance.