Nervous System

What are the two divisions of the nervous system?

• Central nervous system and peripheral nervous system

• Autonomic nervous system and somatic nervous system

• Sympathetic nervous system and parasympathetic nervous system

• Cerebral nervous system and spinal nervous system

What is the difference between afferent and efferent neurons?

• Afferent neurons carry signals to the central nervous system; efferent neurons carry signals away from the central nervous system.

• Afferent neurons are responsible for reflex actions; efferent neurons are involved in sensory perception.

• Afferent neurons transmit signals between different parts of the body; efferent neurons are only found in the brain.

• Afferent neurons are involved in motor functions; efferent neurons are involved in emotional responses.

What is the role of motor neurons?

• Transmit signals from the central nervous system to effectors such as muscles and glands.

• Receive signals from sensory neurons and transmit them to the brain.

• Regulate the heartbeat and blood pressure.

• Control the secretion of hormones from glands.

What is the central nervous system made up of?

• Brain and spinal cord

• Heart and lungs

• Liver and kidneys

• Stomach and intestines

What do motor/efferent neurons do?

• Transmit sensory information to the brain.

• Carry messages from the brain and spinal cord to muscles and glands.

• Process information within the brain.

• Regulate the heartbeat and breathing.

What are the two branches of the autonomic nervous system?

• Sympathetic and parasympathetic nervous systems.

• Central and peripheral nervous systems.

• Somatic and autonomic nervous systems.

• Cerebral and spinal nervous systems.

What is the role of the myelin sheath?

• Insulates axons to increase the speed of nerve impulse transmission.

• Transmits signals between neurons.

• Protects the brain from injury.

• Stores neurotransmitters for later use.

What type of neurons carry messages to the central nervous system?

• Motor/efferent neurons

• Sensory/afferent neurons

• Interneurons

• Glial cells

What type of neuron is located only in the brain and spinal cord that passes impulses from one neuron to another?

• Interneuron

• Sensory neuron

• Motor neuron

• Efferent neuron

What is the function of the peripheral nervous system?

• Connects the central nervous system to the limbs and organs.

• Regulates the body's metabolic processes.

• Transmits signals within the brain only.

• Controls voluntary muscle movements.