The Nervous System

The basic functions of the human nervous system includes...

• Sensory functions

• Integrative functions

• Emotional functions

• Motor function

Sensory functions mean that the nervous system...

• Sends information to the effector organs to responds to a stimulus

• Receives information from sensory receptors regarding a change inside or outside the body

• Analyses information that it has received regarding a stimulus, to formulate a response to the stimulus

Tags

NGSS.MS-LS1-8

Integrative functions means that the nervous system...

• Initiates a movement in the muscles to move away from a painful stimulus

• Has received a sensory impulse that a painful stimulus is hurting the body, and now has to formulate of a response to help the body move

• Is receiving an impulse that the body is experiencing pain

Tags

NGSS.HS-LS1-3

Motor functions mean that the nervous system...

• Feels/experiences a stimulus

• Analyses/stores a memory of a stimulus

• Reacts to the stimulus

The central nervous system consists of...

• The spinal cord

• The spinal cord and the brain

• The brain

• Spinal and cranial nerves

The peripheral nervous system can be subdivided into...

• central nervous system and peripheral nervous system

• sensory nervous system and motor nervous system

• Somatic nervous system and Autonomic nervous system

Sensory neurons conduct impulses...

• from a sensory receptor to the CNS

• from the CNS to an effector

• away from the CNS to create a response

In a sensory neuron, where would you expect to find the cell body of the neuron?

• At the left of the neuron

• There is no cell body

• In the center of the neuron

• At the outer edge of the neuron

Motor neurons conduct impulses...

• from a sensory receptor towards the CNS

• from the skin to the brain

• from the CNS to the effectors

• it does not conduct impulses

The node of Ranvier

• insulates the neuron

• contains the cell body

• allows diffusion into and out of the neuron

• conducts impulses