The body

Question 1

A transmitter chemical that causes muscle contraction

Answer 1

acetylcholine

Question 2

Fluid within the meninges around the brain and spinal cord

Answer 2

cerebrospinal fluid

Question 3

An enzyme which neutralizes acetylcholine at the synapse

Answer 3

cholinesterase

Question 4

A graph showing the brain’s electrical activity

Answer 4

electroencephalogram

Question 5

A brain problem that causes seizures

Answer 5

epilepsy

Question 6

Separation of charge in the neurons that prepares them for transmitting an impulse

Answer 6

polarized

Question 7

What system allows us to interact with our environment, the physical world.

Answer 7

nervous system

Question 8

Gathering and interpreting information is a function of the:

Answer 8

nervous system

Question 9

The brain and the spinal cord are considered

Answer 9

central nervous system

Question 10

What type of cell is a neuron

Answer 10

nerve

Question 11

What does a neuron has similar to all cell

Answer 11

nucleus

Question 12

“Motor end plates” are associated with:

Answer 12

axon
muscle contraction
transmitter chemicals

Question 13

How do nerve signals pass through the synapse?

Answer 13

by chemical reactions
by acetylcholine

Question 14

Impulses travel through neurons because of the reversal of

Answer 14

membrane polarization

Question 15

Protective membranes surrounding the brain are called

Answer 15

the meninges

Question 16

main purpose of the cerebrospinal fluid

Answer 16

protection

Question 17

largest and uppermost part of the brain is called the

Answer 17

cerebrum

Question 18

purpose of all the folds in the cerebrum

Answer 18

increases the surface area

Question 19

spinal cord runs through and is protected

Answer 19

vertebrae

Question 20

sensation and reaction circuit bypassing the brain

Answer 20

reflex arc

Question 21

contains many sensory areas

Answer 21

parietal lobe

Question 22

measures electrical changes of the heart

Answer 22

electrocardiogram

Question 23

fatty layer around axons

Answer 23

sheath

Question 24

measures brain waves

Answer 24

electroencephalogram

Question 25

willful muscle contraction; emotions

Answer 25

frontal lobe

Question 26

space between neurons

Answer 26

synapse

Question 27

another name for vagus nerve

Answer 27

cranial nerve

Question 28

spinal cord - input/output

Answer 28

spinal nerves

Question 29

A transparent liquid which is located between the cornea and iris.

Answer 29

aqueous humor

Question 30

Muscles attached to the lens to change its shape

Answer 30

ciliary muscles

Question 31

A photoreceptor cell which functions best in bright light. It detects color.

Answer 31

cone

Question 32

The transparent portion of the sclera at the front of the eye

Answer 32

cornea

Question 33

A special part of the choroid layer composed of colorful tissue

Answer 33

iris

Question 34

The nerve connecting the eye to the brain

Answer 34

optic nerve

Question 35

Specialized cells located in the retina that receive light images

Answer 35

photoreceptor

Question 36

A delicate light-sensitive membrane covering the inside of the eyeball

Answer 36

retina

Question 37

A photoreceptor cell which is sensitive to dim light, but detects no color

Answer 37

rod

Question 38

A fibrous material surrounding the eye to give it shape

Answer 38

sclera

Question 39

A transparent jellylike substance filling the eyeball

Answer 39

vitreous humor

Question 40

The layers of the eye are the _____. choroid

Answer 40

choroid sclera retina

Question 41

a hole through the center of the anterior choroid

Answer 41

pupil of the eye

Question 42

portion of the eye that acts as a camera shutter is the

Answer 42

iris

Question 43

What is the ultimate function of ciliary muscles

Answer 43

focus teh eye

Question 44

The eye layer which receives light images is the _____.

Answer 44

retina

Question 45

The retinal cells responsible for night vision are:

Answer 45

rods

Question 46

area of the eye with a concentration of cones is the

Answer 46

fovea

Question 47

photoreceptor cells which are sensitive to colors

Answer 47

cones

Question 48

How is the light image formed on the retina

Answer 48

inverted

Question 49

axons of the retinal culminate in the optic nerve which forms a

Answer 49

blind spot on the retina.

Question 50

Difficulty with seeing distant objects is called:

Answer 50

nearsightedness myopia

Question 51

Difficulty with seeing objects close to the eye is called:

Answer 51

farsightedness hyperopia

Question 52

Localized distortion of light through the cornea

Answer 52

astigmatism

Question 53

Night blindness can be caused by a deficiency of:

Answer 53

vitamin A