NY Regents Regulation - Nerve control

Nerve control depends mainly on the functioning of the ​ (a)   (nerve cells) and their supporting cells.

Any change in the ​ (b)   which initiates an impulse is a ​ (c)   . Examples of stimuli can ​ (d)   .

• tiny neurons
• external or internal environment
• stimulus
• changes in: chemicals, light, and sound

Changes in chemicals, light, and sound are:

• Impulses

• Stimulus

• Receptors

• Regulation

​ (a)   are structures specialized to detect certain stimuli and are found in the skin, eyes, ears, and other sensory areas.

Impulses are ​ (b)   generated along a neuron.

These charges are a result of changes in ​ (c)   along the membranes of ​ (d)   .

Impulses transmit information to and from the ​ (e)   .

• Receptors
• electro-chemical charges
• polarity
• neurons
• central nervous system

Place the order of how stimuli is transmitted to and from the central nervous system.

• Impulses transmit information to and from the Central nervous system

• Changes in polarity along the membranes of neurons

• Electro-chemical charges are generated along a neuron

• The reaction to a stimulus is a response

• Receptors detect certain stimuli

Match the following

• Electro-chemical charges

• The organs such as glands and muscles that respond

• Neurons

• Nerve cells

• Regulation

• detect certain stimuli

• Receptors

• result of changes in polarity

• Effectors

• coordination, adjustment and control of all activities

Fibers that detect the stimulus and generate impulses toward the cyton

that contains the nucleus.

• Dendrites

• Cyton

• Axon

• Terminal branches

This contains the nucleus (brain of the cell)

• Dendrites

• Cyton

• Axon

• Terminal branches

A fiber that transmits the impulse away from the cyton (nucleus) to the terminal branches

• Acetylcholine

• Transmitters

• Axon

• Synapse

Ends of the Axons that secrete neurotransmitters that send a message from one nerve cell to another.

• Terminal branches

• Neurotransmitters

• Dendrites

• Cyton

Neurons and receptors and effectors (muscles, sweat glands) ​ (a)   each other.

The ​ (b)   is a junction (gap or space) between adjacent neurons.

Neurotransmitters (​ (c)   ) are secreted from​ (d)   and ​ (e)   across the synapse by stimulating the adjacent neuron.

• do not directly contact
• synapse
• acetylcholine
• terminal branches
• aid in the transmission