Sc-Nervous System

Front 1

Auditory Nerve

Back 1

The ____ is the nerve that receives sound wave messages from the receptor cells in the cochlea and sends them

Front 2

Cochela

Back 2

The ______ is a snail shaped structurebin the inner ear filled with fluid. It is pea sized and contains receptor cells. When the fluid in the ______ moves, it triggers the receptor cells.

Front 3

Ear Canal

Back 3

The sound waves are funneled through the pinna, travel into the middle part of the ear, through a tube called the ______.

Front 4

Ear Infection

Back 4

An ______ that occurs in the ear canal is reffered to as swimmer's ear, and can be caused by a fungus or bacteria. A middle ______ is generally caused by bacteria wich travels up the Eustachian Tube. An inner ______ is generally caused by a virus that damages the semicircular canalscausing issues with balance. Viruses Can damage the auditory nerve causing partial or complete hearing loss.

Front 5

Ear Drum

Back 5

The ______ is at the end of the auditory canal. It is stretched tight like the head of a music drum, and it vibrates when it is hit by sound waves. When the ______ vibrates, it causes three small bones to vibrate. It separates the outer ear from the middle ear.

Front 6

Eustachian Tubes

Back 6

Between your middle ear and your throat there is a passage called the ______. The ______ keep pressure from building up by letting air move in and out of your middle ear.

Front 7

Incus

Back 7

The ______ (or Anvil) is the second tiny bone in the middle ear that receives sound wave messages in the form of vibrations from the malleus and sends it to the third tiny bone, the stapes.

Front 8

Inner Ear

Back 8

The ______ is totally encased in the skull. The inner ear is filled with fluid.

Front 9

Malleus

Back 9

The ______ (or hammer) is the first of the three tiny bones in your middle ear. It receives sound wave messages in the form of vibrations from the Tympanum (ear drum) and sends it to the incus.

Front 10

Arachnoid Matter

Back 10

The ______ is one of the three layers of membrane that cover the brain and spinal cord. It is between the two other layers. It is delicate and spiderweb-like (therefore the name - arachnoid refers to spiders). Cerebrospinal fluid flows under this membrane.

Front 11

Axon

Back 11

The _______ is the long, skinny part of a neuron and it sends

Front 12

Cell Body

Back 12

The ______ is the largest part of a cell and holds all of the general parts of a cell including the nucleus, which is the controll center of the cell. The ______ has structures that help make energyand get rid of cellular wastes.

Front 13

Cerebellum

Back 13

The ______ is located under the cerebrum and is respinsible for balance, movment, and coordination.

Front 14

Cerebrospinal Fluid

Back 14

The ______ helps protect the brain and nerve tissue, keep it healthy, and removes waste products. Essentially, the brain "floats" in it. It is located between the arachnoid mater ( the middle layer of the brain cover) and the pia mater ( the layer closest to the brain). It also fills special spaces in the brain and spinal cord.

Front 15

Cereberum

Back 15

______ is the largest and most complex part of te brain. It consists of the Cerebrum- the area with all the folds and grooves. It controlls out intlligence, memory, personality, emotion, speech, and ability to feel and move.

Front 16

Cranium

Back 16

The ______ is the part of the skeletal system that holds and protects the brain. Along with the mandible, it makes up the skull.

Front 17

Dendrites

Back 17

______ are the long, thin, spidery looking parts of a neuron. One neuron may have more than 10,000 dendrites. The dendrites recieve nerve messages and carry signals tword the cell body.

Front 18

Dura Matter

Back 18

The _______ ( from the latin "hard mother") is the tough outermost of the three layers surrounding the brain and spinal cord. It helps protect the brain.

Front 19

Medulla

Back 19

The ______ along with a structure called pons, makes up the BRAINSTEM. It takes in, sends out, and coordinates all of the brains messges and carry the signals tword the cell body.

Front 20

Nerves

Back 20

______ are made up of the bundlesof neurons (nerve cells). Certain nerves carry messages to the spinal cord and brain. Other nerves carry messgaes from the brain. Nerves tend to be larger at the spinal cord and become smaller as they move away from the spinal cord.

Front 21

Nervous System

Back 21

The ______ is made up of the brain, spinal cord, and the sence organs. It recieves mesages from the enviroment and sends them to the brain and sends messgaes and sends messgaes from the brain to the structures of the body.

Front 22

Pia Matter

Back 22

The ______is the delecate innermost layer of the meninges- the membranes surrounding the brain and spinal cord. The thin, mesh like pia mater closley cover the entire surface of the brain, running down into the foldsof the cerebrum.

Front 23

Receptor Cells

Back 23

______ are specialized neurons in the sence organs ( like eyes nose ear ect) that detect stimuli from the enviroment like light, smells sounds ect.

Front 24

Reflex

Back 24

A ______ is an action that is controlled by a message carried by a nerve that goes to the spinal cord not the brain. This saves time and allows the action to occur more quickly. Examples of reflexes: Pulling your hand away from a hot surface, and blinking when there is fast movment around your eye.

Front 25

Sence Organs

Back 25

_______ ( like eyes nose mounth and ears ect) have specialized cells that pick up messages from the enviroment and sends them to the brain

Front 26

Spinal Cord

Back 26

The _______is formed by a narrowing of the Medulla. It is made of nerves that carry messages to or away from the brain. It runs down a channel created by a hollow center of the vertabrea.

Front 27

Synapse

Back 27

______ are where neurons meet. The Dendrites and the axons dont acually touch because the ______ are tiny gaps. At the ______, the nerve signal can jump from one to the next. The dendrites recieve nerve signals from an other nerve cells and pass them to the axon. The axon carries them long distance to the dendrites of other nerve cells. At the ______, the signal always pass in the same direction. They don't work in reverse.

Front 28

Terminal Fibers

Back 28

______ Are located at the end of axons. They release molocules that dendrites or a nearby neuron recieves.

Front 29

Stapes

Back 29

The ______ or stirrup is the small stirrup shaped bone in your middle ear, which is attached to the incus and to the fenestra ovalis (oval window). It is the smallest and lightest bone in the huan body and it tranfers sound waves to te cochlea.

Front 30

Middle Ear

Back 30

The _____ is located between the eardrum and the oval window of the cochlea. The middle ear contains the three tiny bones. The main function of the middle ear to transfer sound waves to the cochla.

Front 31

Semicircular Cannals

Back 31

The _____ are connected to the cochlea. They are filled with fluid. When you moves the fluid moves causing you to be aware of your postition.

Front 32

Pinnae

Back 32

The ______ or auricles are the structures on teh sides of your head, which funnel sound waves into your auditory cannal.

Front 33

Sound Waves

Back 33

Are created when noises cause air molecules to vibrate. When they reach the tympanum it vibrates three tiny bones, which transfer the vibration to the cochlea. The vibrations are turned into a nerve signal, which is carried to the brian , which to the brain by the auditory nerve.

Front 34

Noise Pollution

Back 34

_______ is any load or constant noise that disrupts the activity or balance of human or animal life. A common form of transportation - cars and planes, but also power toold barking dogs apliances that hum ect.

Front 35

Distance Vision

Back 35

______ allows you to see objects that 20 feet or more from the viewer.

Front 36

Peripheral Vision

Back 36

______ is waht allows you to see right and left without turning your head. It is weaker to humans than it is to other animals.

Front 37

Pupil

Back 37

The ______ is the entrance of the inside of an eyeball. It lets light into your eyes. The muscle of the iris controls the size of it. The bigger it is, the more light is let into your eye.

Front 38

Retina

Back 38

The ______ lines the inside back of your eyeball and is made of receptor cells that are sensitive to light. It covers light to nerve messages.

Front 39

Iris

Back 39

The ______ is colored part of the eye, It has muscle fibers that contracts and relaxes to control the size of the pupil.

Front 40

Cornea

Back 40

The ______ is the tough , transparent outer layer that protects the front of the eye.

Front 41

Lens

Back 41

The ______ is a smal disk made of clear living cells, it is held in place by muscles that contract and realx, causing it to flatten or buldge. This controls your ability to focus on objects that are near or far.

Front 42

Optic Nerve

Back 42

The ______ is attached at the back of the eyball it recieves light messgaes from the retina and sends them to the brain.

Front 43

Decibles

Back 43

______ are units of measurement that measure the loudness of sound. A loud I-pod would measure 125 ______ and a whisper is 30 ______.

Front 44

Tapetum

Back 44

The ______ is the reflective layer in the back of the eye of some animals. It helps animals with night vision.

Front 45

Choroid

Back 45

The ______ is a layer of the eye between thenretina and sclera. It is made of layers of blood vessels that nourish the back of the eye.