Type
Crossword
Description

the middle membrane surrounding the brain and spinal cord arachnoid
the junction where an axon approaches another neuron or its extension (a dendrite); the point at which nerve-to-nerve communication occurs. synapse
a chemical that acts as a messenger between neurons and is released into the synaptic cleft when a nerve impulse reaches the end of an axon. neurotransmitter
a neurotransmitter involved in motivation, learning, pleasure, the control of body movement, and other brain functions. dopamine
the lower part of the brain; located beneath the posterior portion of the cerebrum, that regulates unconscious coordination of movement. cerebellum
the outermost layer of three membranes that surround the brain and spinal cord. (Two words) duramater
a collection of specialised nerve cells at the base of the brain that controls the anterior and posterior pituitary secretions and that produces ADH. hypothalamus
the chambers within the brain that contain the cerebrospinal fluid. ventricles
an infection or inflammation of the membranes covering the brain and spinal cord. meningitis
the fat-like substance that surrounds the axon of nerve fibres and forms an insulating material. myelin
a part of the brain’s cerebrum, located at the rear of the brain, above the cerebellum. It is primarily concerned with vision and encompasses the visual cortex. (Two words) occipitallobe
a long, single nerve process that transmits messages, via electrochemical impulses, from the body of the neuron to dendrites of other neurons, or directly to body tissues such as muscles. axon
a swelling where the cell bodies of unipolar neurons are located outside the spinal cord. (Three words) dorsalrootganglion
the paler tissue of the brain and spinal cord, consisting mainly of nerve fibres with their myelin sheaths. (Two words) whitematter
the clear, colourless liquid found surrounding the brain and spinal cord. (Three words) cerebrospinalfluid
the largest part of brain in humans, accounting for about two-thirds of the brain’s mass and positioned over and around most other brain structures. cerebrum
the collection of nerve fibres connecting the two cerebral hemispheres. (Two words) corpuscallosum
The outer layer of the cerebrum. cortex
Short nerve processes that project from the cell body of a nerve cell, generally receiving messages from the axons of other neurons and relaying them to the cell’s nucleus. dendrites
the nerve pathway involved in a reflex action, including at its simplest a sensory nerve and a motor nerve with a synapse between. (Two words). reflexarc
the front lobe of the brain’s cerebrum, beneath the forehead frontal
the hole in the skull through which the spinal cord passes. (Two words) foramenmagnum
either half of the brain (left or right) that are separated by a deep groove, or fissure, down the centre. hemisphere
the continuation of the spinal cord within the skull, forming the lowest part of the brainstem and containing control centres for the heart and lungs. (Two words) medullaoblongata
a nerve cell neuron

The Nervous System Crossword

Type
Crossword
Description

Cells that transmit impulses Neurons
Short branch extensions that carry impulses towards the cell body Dendrites
Long fiber that carries impulses away from cell body Axon
Contained in sacs in axon terminals; released to cause stimulus in the next cell; chemicals Neurotransmitters
Relays messages, processes information, and analyzes information. Central nervous system
Connects brain to the spinal cord; Controls involuntary actions. Brain Stem
Controls reflexes; Carries signals from brain to the body Spinal cord
Second largest part of the brain; Located at the back of the skull; Coordinates balance and movement. Cerebellum
Largest part of the brain; Responsible for voluntary and educated actions; Located in 2 different lobes. Cerebrum
Fatty insulated sheath that surrounds all but the smallest nerve fibers. Myelin sheath
a bundle of fibers running to organs and tissues in the body. nerve

The Nervous System Word Search

Type
Word Search
Description

electrical impulse
neurons
medulla oblongata
cerebellum
cerebrum
nerve impulse
relfex arc
neurotransmitters
muscle tissue
synapse
motor meurons
interneurons
sensory neurons
dendrite
cell body
nervous system
nerve
axon
skeletal muscle
spinal cord
Brain
PNS
Peripheral Nervous System
CNs
Central Nervous System

Biology Nervous System Crossword

Type
Crossword
Description

An electrochemical pulse that moves long the membrane of a neuron Nerve impulse
The protective coverings of the brain and spinal cord Meninges
The brain region that receives general sensations and relays impulses to a parietal lobe Thalamus
The region of the brain that controls involuntary activities Hypothalamus
Part of the neuron that receives nerve impulses and transmits them toward the cell body Dendrite
The series of neurons that produces a single reaction in response to a stimulus Reflex arc
The white fatty membrane that protects the neuron Myelin Sheath
The part of the nervous system consisting of the brain and spinal cord Central Nervous System
The part of the neuron with the greatest diameter; contains the nucleus Cell Body
The junction between the axon and dendrite Synapse
The part of the brain containing motor and sensory centers: controls voluntary movement Cerebrum
Part of the brain that monitors and adjusts body activities Cerebellum
The gray matter of the cerebrum Cerebral Cortex
Part of the brain; Relay center between spinal cord and brain; reflex center Medulla oblongata
A rounded portion of the lower brain that relays information from one side of th brain to the other Pons
The nervous tissue that conducts messages between the brain and the peripheral body parts Spinal cord
The functional unit of the nervous system. The cell that receives and distributes nerve impulses. Neuron
The chemicals responsible for extending the nerve impulse from one cell to the next Neurotransmitters

Central Nervous System Crossword

Type
Crossword
Description

nerve impulse, membrane potential of an active neuron Action potential
in a neuron, the single process that extends from the axon hillock and transmits impulses away from the cell body Axon
division of the nervous system composed of the brain and spinal cord Central nervous system
branching or tree-like nerve cell process that receives input from other neurons and transmits impulses toward the cell body (or toward the axon in unipolar neurons) Dendrite
nonexciteable supporting cells of nervous tissue; formerly called neruoglia glia
difference in electrical charge between inside and outside of the plasma membrane membrane potential
lipoprotein substance in the myelin sheath around many nerve fibers that contribute to high speed conductivity of impulses myelin
bundle nerve fibers, plus surrounding connective tissue, located outside the brain and spinal cord nerve
nerve cell, including its processes (axons and dendrites) neuron
nerves connecting the brain and spinal cord to other parts of the body peripheral nervous system
impulse conduction route to and from the central nervous system; smallest portion of nervous system that can receive a stimulus and generate a response reflex arc
membrane-to-membrane junction between a neuron and another neuron, effector cell, or sensory cell; function to propagate action potential synapse
part of the brain containing the midbrain, pons, and medulla oblongata brainstem
second largest part of the human brain; plays an essential role in the production of normal movements cerebellum
plasma-like fluid that fills the subarachnoid space in the brain and spinal cord and in the cerebral ventricles cerebrospinal fluid
largest and uppermost part of the human brain that controls consciousness, memory, sensations, emotions, and voluntary movements cerebrum
“between” brain; parts of the brain between cerebral hemispheres and the mesencephalon, or midbrain diencephalon
graphic representation of voltage changes in the brain tissue used to evaluate nerve tissue function electroencephalogram
important autonomic and neuroendocrine control center located inferior to the thalamus in the brain hypothalamus
parts of the brain involved in emotions and sense of smell; plays key role in coupling sensory inputs to short- and long-term memory; consists of the hippocampus, the hypothalamus and several other structures limbic system
fluid-containing membranes surrounding the brain and spinal cord meninges
located in the medulla where bits of gray and white matter mix intricately, this structure is involved in regulating input from sensory neurons, arousal, and motor control Reticular formation
mass of gray matter located in diencephalon just above the hypothalamus; helps produce sensations, associates sensations with emotions, and plays a part in the arousal mechanism thalamus
a cavity, such as the large, fluid-filled spaces within the brain or the chambers of the heart ventricle

The Nervous System Crossword

Type
Crossword
Description

brain and spinal corn cns
made up of nerve cells that send messages between the central nervous system and other parts of the body pns
nerve cells that run through our entire bodies and they communicate with each other neurons
produces energy that fuels the neurons activity cell body
branches out of the cells body and receives information from other neurons and pass the message through the cell body dendrites
transmits messages away from the cell body axon
a white fatty substance that insulates and protects the axon myelin
the smaller fibers branching out at the end of the axon axon terminals
a junction between the axon terminals of one neuron and the dendrites of another synapse
chemicals that are stored in sacs in the axon terminals neurotransmitters
a column of nerves about as thick as a thumb that extends from the brain down the back spinal cord
transmits sensory messages to the central nervous system sns
regulates the body's vital function, such as heartbeat, breathing, digestion, and blood pressure ans

Ch. 9 Anatomy Vocab Crossword

Type
Crossword
Description

nerve cells neurons
information in the form of electro. chemical changes nerve impulses
rounded area on neurons cell body
extension of cell body that receive electro. chemical messages dendrites
extensions that send electro chemical info. axons
nervous tissue that provides physical support, insulation, and nutrients neuroglia
consists of brain and spinal cord CNS
composed of nerves and connects the CNS to other body parts PNS
gather info. by detecting changes inside and outside the body sensory receptors
include muscles and glands whose actions are controlled or modified nerve impulses effectors
controls skeletal muscle somatic nervous system
mixture of proteins and lipids that form a white-ish insulating sheet around nerve fibers myelin
support neurons and phagocytize bacterial cells microglial
provide myelin sheath around axons in the brain and spinal cord oligodendrocytes
provide structural support, join parts by their cellular processes, and regulate concentrations of nutrients and ions astrocytes
form an epithelial like membrane that covers specialized brain parts and form inner linings that enclose spaces in the brain ependymal
produce a myelin sheath around axons of neurons schwann cells
a network of fine threads that form the cell body of a neuron neurofibrils
sheath that surrounds the myelin sheath neurolemma
narrow gaps between schwann cells nodes of ranvier
type of neuron that has many processes arising from their cell body (1 axon, the rest dendrites) multipolar neurons
type of neuron that have 2 processes, one arising from each of the cell body (1 axon, 1 dendrite) bipolar
type of neuron that have single processes extending from cell body that divide into 2 branches (peripheral process ad central process) unipolar
(afferent neurons) transmit nerve impulses from peripheral body parts into brain or spinal cord sensory neurons
(assosciation neuron) found entirely within the brain or spinal cord and transmit impulses from one part of the brain or spinal cord to another interneurons
(efferent neurons) transmit impulses out of the brain or spinal cord to effectors; control muscle contraction and secretions of glands motor neurons
junction between two communicating neurons synapse
potential difference between the region outside the membrane and inside the membrane resting potential

The Nervous System Crossword

Type
Crossword
Description

What is the branch part of the neuron that transports messages away from the cell body. Axon
A _____ is made up of a cell body, dendrite, and axon. Neuron
The _______ nervous system is made up of the brain and spinal cord. Central
When a movement causes the spinal cord to interpret an impulse from the brain from sensory receptors this movement is called ______. Reflex
The olfactory cells in the nasal passages detect _________ in the air, transmitting these impulses as odors. Molecules
The _________ _____ in the nasal passages detect molecules in the sir, transmiting these impulses as odors. Olfactory Cells
The ear, along with detecting and transmitting _____ _____, also controls the body's balance by reacting to motion and gravity. Sounds Waves
This part of the brain coordinates voluntary muscle movements. Cerebellum
Nerve cells that conduct impulses from the brain to muscle and glands throughout your body are called _____ neurons. Motor
When an impulse reaches the end of and axon, the axon releases a chemical that flows across the synapse and relrelaysyas the impulse the ________ of the next neuron. Dendrite
Nerve cells that relay impulses from sensory nerve cells are called ____________. Internerons
Which part of the nervous system is made up of nerve cells that carry impulses to and from the brain. Spinal Cord
The rods and cones send impulses to the _____ _____, which carries them to the visual area of the cortex. Optic Nerve
When light is focused in front of the retina a person is ___________. Nearsighted
When the light focused in front of the retina a person is__________. Farsighted

Nervous System Crossword

Type
Crossword
Description

Main organ of the Nervous System Brain
Thin layer that protects the brain Membrane
Another word for skull Cranium
Type of spinal nerve Sacral
Connects the brain to the nerves in the whole body spinal cord
Long fibers that lead to all parts of the body from the spinal cord Nerves
A sensory receptor for the nose Smell
Type of sensory organ that allows you to see Eyes
The gap between the axon of one cell and the dendrit of another cell Synapse
Long fibers that carry messages away from the cell body axon
Branching fibers that bring messages toward the cell body Dendrite
Examples are: Brain, Spinal Cord, Nerves, Neurons organ
Specialized structures that respond to sensory stimuli receptors
A type of sensory receptor that lets you feel temperature cold
Chemical _____ carry messages across the synapse neurotransmitters
Nerves resemble these fibers
Sensory organ that allows you to hear ears
A function of the nervous system - to receive ___ from the environment stimuli
The brain sends instructions to glands to release these hormones
The brain sends instructions to these muscles

The Neuron Crossword

Type
Crossword
Description

What part of the Neuron receives messages from other cells Dendrites
This part of the Neuron passes messages from the cell body to glands, muscles or other Neurons Axon
Covers the Axon of the Neuron, accelerating neural impulses Myelin Sheath
The space between the axon tip of the sending Neuron and the dendrite of the receiving Neuron Synapse
The messenger between sending and receiving neurons, this crosses the synaptic gap between Neurons neurotransmitters
The period of time in which action cannot take place as a result of recent action Refractory Period
The stimulation level needed to trigger or cause a neural impulse Threshold
Neurons that carry information coming to the brain and spinal cord Sensory Neurons
The opposite of Sensory Neurons, this carries information from the brain and spinal cord to muscles and glands Motor Neurons
Do or don't there is no try All or nothing response
Happens when Sodium is on the outside and Potassium is on the inside Polarized
Sodium inside and Potassium on the outside Depolarized
an electrical current caused by depolarizing current. Neuron sending information away from the cell body Action Potential
When the Neuron is not sending a signal on the Axon Resting potential

Anatomy of a neuron Crossword

Type
Crossword
Description

This part of the nerve receives information dendrites
This part of the nerve contains the nucleus a body
Golgi complex packages the neurotransmitter in secretory vesicles called this synaptic vesicles
Carries nerve impulse away from the body of the neuron axon
Axons are intermittently covered with this, also makes impulse faster Myelin sheath
concentration of dendrites, cell, cell bodies and are unmyelinated axons Gray matter
concentration of myelinated axons white matter
Junction formed by the neurons synaptic knob with another cell Synapse
this starts as an electrical impulse, travels down a neuron and results in the release of a neurotransmitter at the synaptic knob nerve impulse
the chemical that is released when a neuron is stimulated neurotransmitter
cells that aid neurons in their functions neuroglia
this consist of 3 main parts, dendrite, axon and the cell body neuron
Another name for the cell body Soma
these are neurons that bring impulses to the brain and spine, afferent Sensory
These are neurons that take an impulse from the brain to the action place, also considered efferent Motor
Travels along the axon as an electric current, jumps over the myelin sheath Polarity shift
connective tissue surrounding an axon of an individual neuron endoneurium
Bundles of axons fascicles
this is what surrounds fascicles perineurium
This is what surrounds the entire nerve epineurium