synapse

A ________ is a small space across which an impulse travels to move from one neuron to another.

central

The ________ nervous system is made up of the brain and spinal cord.

peripheral

The ________ nervous system is made up of all the nerves outside the brain and spinal cord.

dendrite

What is the branch part of the neuron that receives messages and sends them to the cell body?

axon

What is the branch part of the neuron that transports messages away from the cell body?

neuron

A ________ is made up of a cell body, dendrite, and axon.

reflex

When a movement causes the spinal cord to interpret an impulse from the brain from sensory receptors this movement is called a ________.

spinal cord

Which part of the body is made up of bundles of neurons that carry impulses from all parts of the body to the brain and from the brain to all parts of the body?

homeostasis

The regulation of steady, life-maintaining conditions inside an organisms is called ________.

cerebrum

This is the largest part of the brain.

cerebellum

This part of the brain coordinates voluntary muscle movements.

stimuli

The senses act as the body's alert system, reacting to ________ and transmitting impulses to the brain.

light rays

The eye detects ________ ________ and transmits impulses to the brain through the optic nerve.

optic nerve

The eye detects light rays and transmits impulses to the brain through the ________ ________.

sound waves

The ear, along with detecting and transmitting ________ ________, also controls the body's balance by reacting to motion and gravity.

balance

The ear, along with detecting and transmitting sound waves, also controls the body's ________ by reacting to motion and gravity.

olfactory cells

The ________ ________ in the nasal passages detect molecules in the air, transmitting these impulses as odors.

molecules

The olfactory cells in the nasal passages detect ________ in the air, transmitting these impulses as odors.

taste buds

On the tongue ________ ________ can detect five different stimuli: sweet, sour, bitter, salty, and the taste of MSG.

sweet

The taste buds on your tongue can detect the stimuli of ________, sour, bitter, salty, and the taste of MSG.

sour

The taste buds on your tongue can detect the stimuli of sweet, ________, bitter, salty, and the taste of MSG.

bitter

The taste buds on your tongue can detect the stimuli of sweet, sour, ________, salty, and the taste of MSG.

salty

The taste buds on your tongue can detect the stimuli of sweet, sour, bitter, ________, and the taste of MSG.

stimulus

A ________ is any change inside or outside your body that brings about a response in a living organism.

neurons

Your nervous system is made up of ________ which are made up of a cell body and branches of dendrites and axons.

dendrite

This is the part of the neuron that receives messages and send them to the cell body.

axon

This is the part of the neuron that carries messages away from the cell body.

impulses

Messages carried by nerve cells are called ________.

three

You have ________ kinds of nerve cells.

sensory

Nerve cells that receive information and send impulses to the brain or spinal cord are called ________ neurons.

interneurons

Nerve cells that relay impulses from sensory nerve cells to motor nerve cells are called ________.

motor

Nerve cells that conduct impulses from the brain to muscles and glands throughout your body are called ________ neurons.

touch

Nerve cells do not ________ each other, yet still pass impulses to each other.

impulses

Nerve cells do not touch each other, yet still pass ________ to each other.

space

A synapse is a ________ between nerve cells.

synapse

A ________ is a space between nerve cells.

chemical

When an impulse reaches the end of an axon, the axon releases a ________.

dendrite

When an impulse reaches the end of an axon, the axon releases a chemical that flows across the synapse and relays the impulse to the ________ of the next neuron.

brain

The ________ coordinates all of your body activities.

cerebrum

This is the part of the brain that interprets impulses from the senses, stores memory, and controls movements.

cerebrum

Thinking takes place in this part of the brain.

cerebrum

This is the largest part of the brain.

cortex

The outer layer of the brain is called the ________, which allows more complex thoughts to be processed.

cerebellum

This part of the brain is located behind and under the cerebrum.

cerebellum

This part of the brain interprets stimuli from the eyes, ears, muscles, and tendons.

cerebellum

This part of the brain coordinates voluntary muscle movements, maintains muscle tone, and helps maintain balance.

brain stem

The ________ ________ is the part of the brain the extends from the cerebrum and connects it to the spinal cord.

brain stem

What part of the brain is made up of the midbrain, the pons, and the medulla?

medulla oblongata

What part of the brain stem controls involuntary actions such as heartbeat, breathing, and blood pressure?

spinal cord

Which part of the nervous system is made up of bundles of nerve cells that carry impulses to and from the brain?

peripheral

The ________ nervous system connects your brain and spinal cord to the rest of your body.

two

The peripheral nervous system has ________ systems.

somatic

In the peripheral nervous system the ________ system controls voluntary actions.

autonomic

In the peripheral nervous system the ________ system controls involuntary actions.

injury

Any ________ to the brain or spinal cord can be serious.

paralysis

Injury to the spine can result in loss of muscle movement called ________.

safety gear

It is important to wear ________ ________ when playing sports or riding in a car or on a bicycle.

reflex

A ________ is an involuntary, autonomic response to a stimulus controlled by the spinal cord.

alcohol

Drugs like ________ and caffeine affect your nervous system.

caffeine

Drugs like alcohol and ________ affect your nervous system.

slows

Alcohol ________ the activities of the central nervous system.

speeds

Caffeine ________ up the activity of the central nervous system.

five

Your body has ________ senses.

retina

When light energy enters your eye the cornea and lens focus it onto the ________.

rods

The light energy that enters your eye stimulates the ________ and cones located in your retina.

cones

The light energy that enters your eye stimulates the rods and ________ located in your retina.

optic nerve

The rods and cones send impulses to the ________ ________, which carries them to the visual area of the cortex.

nearsighted

When light is focused in front of the retina a person is ________.

farsighted

When light is focused in behind the retina a person is ________.

front

When light is focused in ________ of the retina a person is nearsighted.

behind

When light is focused ________ the retina a person is farsighted.

concave

To correct nearsightedness a person needs to wear a ________ lens which is thicker at the edges than in the middle.

convex

To correct farsightedness a person needs to wear a ________ lens which is thicker in the middle than at the edges.

sound waves

When an object vibrates, it produces ________ ________ necessary for hearing sound.

pinna

Your outer ear called the ________ captures sound waves and sends them to the ear canal.

eardrum

In the middle ear, sound waves cause the ________ to vibrate.

hammer

In the middle ear when the eardrum vibrates it will vibrate tiny bones called the ________, anvil, and stirrup.

anvil

In the middle ear when the eardrum vibrates it will vibrate tiny bones called the hammer, ________, and stirrup.

stirrup

In the middle ear when the eardrum vibrates it will vibrate tiny bones called the hammer, anvil, and ________.

cochlea

In the inner ear, vibrations cause the fluids in the ________ to vibrate, stimulating nerve endings.

balance

The cristae ampullaris and the maculae in the middle ear control the body's ________.

molecules

Food and other objects give off ________ into the air.

olfactory cells

When you smell, molecules from food and other objects stimulate nerve cells called ________ ________ in your nasal passages.

taste buds

What are the major sensory receptors for taste?

taste buds

Your tongue contains ________ ________ that help you to sense tastes.

internal organs

For your sense of touch sensory receptors are found in ________ ________ and skin.

skin

For your sense of touch sensory receptors are found in internal organs and ________. These sensory receptors can pick up changes in touch, pressure, pain, and temperature.

outer ear

In this picture of ear structure what is letter "A" ?

middle ear

In this picture of ear structure what is letter "B" ?

inner ear

In this picture of ear structure what is letter "C" ?

pinna

In this picture of ear structure what is letter "M" ?

ear canal

In this picture of ear structure what is letter "L" ?

eardrum

In this picture of ear structure what is letter "J" ?

malleus

In this picture of ear structure what is letter "K" ?

incus

In this picture of ear structure what is letter "H" ?

stapes

In this picture of ear structure what is letter "I" ?

cochlea

In this picture of ear structure what is letter "F" ?

semicircular canals

In this picture of ear structure what is letter "D" ?

eustachian tube

In this picture of ear structure what is letter "G" ?

auditory nerve

In this picture of ear structure what is letter "E" ?

cornea

In this picture of eye structure what is letter "B" pointing to?

pupil

In this picture of eye structure what is letter "C" pointing to?

lens

In this picture of eye structure what is letter "E" pointing to?

scelera

In this picture of eye structure what is letter "A" pointing to?

retina

In this picture of eye structure what is letter "J" pointing to?

optic nerve

In this picture of eye structure what is letter "G" pointing to?

retinal artery

In this picture of eye structure what is letter "I" pointing to?

retinal vein

In this picture of eye structure what is letter "H" pointing to?

scelera

In this picture of eye structure what is letter "F" pointing to?

farsightedness

Does this picture show farsightedness or nearsightedness?

nearsightedness

Does this picture show farsightedness or nearsightedness?

dendrite

In this picture of neuron structure what is letter "A" pointing to?

cell body

In this picture of neuron structure what is letter "B" pointing to?

nucleus

In this picture of neuron structure what is letter "C" pointing to?

myelin sheath

In this picture of neuron structure what is letter "D" pointing to?

axon

In this picture of neuron structure what is letter "E" pointing to?

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