Download Worksheet - Humble ISD

Name: ____________________
Date: ___________
Ear, Neuron, Brain, Eye Worksheet
Ear:
1. ______Fluid-filled structure lined with tiny hairs cells that change
pressure waves into nerve impulses.
2. ______Sends nerve impulses to the brain
3. ______Monitor the position of your body, your equilibrium.
4. ______Site where vibrations enter the ear
5. ______Three small bones that receive the vibrations after the eardrum
6. ______Receives vibrations from the stirrup and changes it to a pressure
wave
7. ______Drainage to sinuses
8. ______Thin membrane that picks up the vibrations that enter
Per. _______
a.
b.
c.
d.
e.
f.
g.
h.
Auditory canal
Auditory nerve
Cochlea
Eardrum (tympanum)
Eustachian tube
Hammer/Anvil/Stirrup
Oval window
Semicircular canals
9. Trace the path that sounds takes through the ear: _______________ __________  ___________ 
_______________  ____________  _____________  _____________ ____________  brain
Neuron: #10-24
There are 3 types of neurons, they are _______________, ______________, & _______________. The
______________ neuron carries impulses from the brain to muscles or glands. The _________________ neuron
connects the other two types together. Lastly, the ____________ neuron carries impulses from sense organs to
the brain.
The electrical signal of the neuron is carried toward the ________________ by the _____________ and away
from the nucleus of the neuron by the _______________, which is surrounded by a fatty material known as the
___________________, and individual cells of this material are called ____________ cells. The purpose of this
is to help the impulse travel ______________ (speed). There is a space (gap) in between two neurons called the
_____________, chemicals called _______________ are released to carry the ______________ across the gap.
The Brain:
______25. Control center for recognition and analysis of hunger, thirst, fatigue, anger,
body temp.
______26. Main communication link between brain and rest of body.
______27. 31 pairs of nerves that branch off the spinal cord.
______28. Coordinates and balances actions of muscles so body can gracefully and
efficiently.
______29. neural “switchboard” –regulates flow of info. between brain and rest of body.
______30. Responsible for voluntary (conscious) activities of body, site of intelligence,
learning and judgment.
______31. controls heart rate, breathing, swallowing…etc
______32. Receives messages from all sensory receptors throughout body, relays info. to
proper region of cerebrum for further processing.
______33. Connects brain and spinal cord (just below cerebellum).
______34. Consists of the brain and spinal cord.
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
Brain Stem
Central NS
Cerebellum
Cerebrum
Hypothalamus
Medulla
Peripheral NS
Pons
Spinal Cord
Thalamus
Eye:
______35. Muscle that regulates the amount of light entering the eye
______36. carries the impulse from eye to the brain
______37. the “white” of the eye; continuation of the cornea
______38. Contains the blood vessels that provide O2 and nutrients to the eye
______39. Solid structure that completes the focusing of the light ray
______40. Layer of nerve tissue that translates light energy to nerve impulse
______41. Hole in the iris through which light passes
______42. Gel-like substance that maintains the shape of eyeball; holds
retinal tissue in place
______43. Outer transparent covering of the eye; begins the focusing of the
light ray
______44. Water-fluid that fills chamber between cornea and lens
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
aqueous humor
choroid
cornea
iris
lens
optic nerve
pupil
retina
sclera
vitreous humor
45. Path of light through the eye:
_______________  ___________________  ___________  ___________  ____________________
Nervous system
Divided into two main branches
_______________________
Consists of
_______________________
consist of
Brain &
31 pairs of _________ off the
___________________
_________________
Further divided into the
________________
(involuntary)
Further divided into
_________________
Increases __________
____________
____________________
Decreases _____________
______________
____________
(voluntary)
also involves a
___________
Be able to
label the
Brain,
Neuron, Eye
& Ear for
your TEST