The Nervous System

neuron, cell body, nucleus, dendrites, axon

A ______________ has a large ________________ that contains the ______________, threadlike extensions called ________________, and an ______________

sensory neuron, spinal cord, brain

A ___________________ gives this information to the _________________ and the ______________

motor neuron, interneuron, muscles

At the same time, another _______________, responding to signals from an _______________, causes the other set of ______________ to relax

transmit signals

Axons __________________________ to other cells

brain, parts/aspects

Different parts of your ______________ control different _______________________ of your body

CNS, motor neuron, interneuron

In the ____________, the information goes to a ___________________ and to an ____________________

reflexes, processed

Many ______________ are actually __________________ directly in the spinal cord

delivered, resting potential, potassium channels, positive potassium ions

Once the message is ________________, the neuron returns back to ______________________ by opening up the _____________________, allowing _______________________ to leave the cells

muscles, motor signals, contracts

One set of ______________ responds to ________________ given by the motor neuron and ______________, jerking the lower leg forward

axon, insulating structure, myelin sheath

The ________________ of a neuron is covered by an __________________ called the ________________

axon, neurotransmitters, dendrite, message

The ________________ of the neuron that contains the message releases molecules called ______________________ that are absorbed by the ________________ of the neuron receiving the ________________

neurotransmitter, ion channels, ion channels, electrochemical impulse

The ____________________ attaches to ________________ on the neuron receiving the message, causing the ________________ to open, causing an ____________________ to be sent down

nervous system, communication

The ____________________ is the main form of __________________ within the body

peripheral nervous system, PNS, CNS

The _______________________ (__________) is made up of nerves that carry signals into and out of the ____________

central nervous system, CNS

The ________________________ (___________) consists of the brain and spinal cord

peripheral nervous system, somatic, autonomic nervous system

The __________________________ can be divided into two more parts called the ___________________ and ________________________________________

involuntary actions, breathing, digestion, heart rate, hormone secretion, pupil dilation

The autonomic nervous system controls _____________________________ such as ________________, ______________, ___________________, ___________________, and ____________________

control center, brain, spinal cord

The central nervous system is the _____________________ of the body. It includes the _______________ and ________________

chain of beds, bed, Schwann cell

The myelin sheath resembles a ___________________, and each _____________ is known as a __________________

brain, spinal cord, neurons, nerve cells

The nervous system is composed of: - the _______________ - the ____________________ - ____________________ (_____________)

positive, negative

The neuron is now back to being ________________ on the outside and _______________ on the inside

nerve cell

The neuron: _________________

network of nerves, connect, rest of the body

The peripheral nervous system consists of a ___________________________ that branch out from the central nervous system and ______________ it to the _____________________________

involuntary, voluntary

The peripheral nervous system is involved in both __________________ and ________________ actions

communication, synapse

The site of ___________________ between two neurons is called a _________________

regulates, conscious, voluntary actions, muscles

The somatic nervous system ______________ things under ______________ control (____________________) like body movement of _______________

Schwann cells, Nodes of Ranvier, axon, signals can be transmitted

The spaces between _________________ are called ______________________ and are the only points on the ___________ where _____________________________

communication link, body, brain

The spinal cord is a _____________________ between your ______________ and ______________

action potential, nerve signal, axon

This triggers an _____________________, a ________________ that carries information along an ______________

axon tips, myelin sheath

What are 7? What is 8?

the central nervous system and the peripheral nervous system

What are the 2 main divisions of the nervous system?

peripheral nerves

What are the red lines?

dendrites, cell body

What is 1? What is 2?

axon, signal pathway

What is 3? What is 4?

Schwann cell, Nodes of Ranvier

What is 5? What are 6?

sensory input

What is A?

integration

What is B?

motor output

What is C?

parasympathetic

What is on the left?

sympathetic

What is on the right?

signal, node, node

When a ______________ travels along an axon, it jumps from ____________ to ___________

neurotransmitter, sodium channels, positive sodium ions, positive

When a __________________ attaches to the ion channel, it opens up the __________________, allowing ______________________ into the neuron, causing the inside of the neuron to become more ______________

positive, negative

When a neuron is at rest, it has a _____________ charge on the outside, and a ____________ charge on the inside

action potential, axon, neurotransmitters, neuron

When the ___________________ reaches the end of the ___________, it causes the neuron to release ______________________ to the next _____________. The whole process starts again

sensory receptor, tendon

When the knee is tapped, a _________________ detects a stretch in the _______________

nerves, brain, neurons, communicate, impulses

Your _____________ and ______________ are made up of many ________________ that ______________ with one another by sending these __________________

neurons, nervous system

________________ are the cells that make up your __________________________

motor neurons, brain, spinal cord, muscles

_________________ carry signals from the _______________ and _______________ to the ________________

motor output, conduction, effector cells, body's responses

__________________ is the _______________ of signals from the integration centers to _________________, such as muscle cells, which perform the _______________________

dendrites, neurons

__________________ receive signals from other ______________

sensory input, conduction, sensory receptors, integration centers

___________________ is the _________________ of signals from ____________________, such as light-detecting cells of the eye, to ___________________

interneurons, central, integrate data, signals, interneurons, motor neurons

____________________ are located within the _____________ nervous system and ________________ __________ and then relay appropriate _____________ to other ____________________ or __________________

integration, sensory signals, formulation of responses

____________________ is the interpretation of the ______________________ and the ________________________________

sensory neurons, stimuli, signals, spinal cord, brain

____________________ sense _____________ from the environment and from within the body and send ________________ to the __________ and _____________

electrochemical impulses, instructions, signals, brain

____________________________ travel along neurons to give your body __________________ and send _______________ to your ______________

between

inter = ______________