3.10 Nervous System

What is the main role of the nervous system in the human body?

• The nervous system helps the lungs expand and contract during breathing.

• The nervous system controls blood sugar levels using hormones.

• The nervous system sends and receives signals to coordinate body activities.

• The nervous system circulates blood throughout the entire body.

Which parts make up the central nervous system?

• The brain and spinal cord make up the central nervous system.

• The heart and blood vessels make up the central nervous system.

• The stomach and intestines make up the central nervous system.

• The skin and muscles make up the central nervous system.

What is the function of neurons in the nervous system?

• Neurons store energy for muscle contractions.

• Neurons absorb nutrients in the digestive tract.

• Neurons conduct electrical signals throughout the body.

• Neurons produce hormones for the endocrine system.

What protects the brain from physical damage?

• The rib cage protects the brain from physical damage.

• The lungs protect the brain from physical damage.

• The skull protects the brain from physical damage.

• The diaphragm protects the brain from physical damage.

What is the purpose of the myelin sheath?

• The myelin sheath helps muscles grow faster.

• The myelin sheath absorbs nutrients from the blood.

• The myelin sheath prevents nerve impulses from crossing to the wrong neuron.

• The myelin sheath helps bones become stronger.

Where is nerve tissue found in the human body?

• Nerve tissue is found in bones and tendons.

• Nerve tissue is found in the heart and lungs.

• Nerve tissue is found in the brain, spinal cord, and nerves.

• Nerve tissue is found in the skin, nails, and hair.

What part of the nervous system carries signals to and from the brain?

• The digestive system carries signals to and from the brain.

• The peripheral nervous system carries signals to and from the brain.

• The circulatory system carries signals to and from the brain.

• The respiratory system carries signals to and from the brain.

What are the three types of nerves in the peripheral nervous system?

• Motor nerves, sense nerves, and vision nerves

• Voluntary, sensory, and involuntary nerves

• Reflex nerves, balance nerves, and motion nerves

• Autonomic, reflex, and optic nerves

What role does cerebrospinal fluid play in the central nervous system?

• Cerebrospinal fluid circulates blood through the heart.

• Cerebrospinal fluid helps cushion and protect the brain and spinal cord.

• Cerebrospinal fluid helps muscles contract and relax.

• Cerebrospinal fluid absorbs nutrients in the intestines.

What is a reflex action?

• A reflex action is a conscious movement controlled by the brain.

• A reflex action is an automatic response that does not involve the brain.

• A reflex action is a thought process that takes a long time.

• A reflex action is a reaction that requires hormones.