1. C R E A T E D B Y : M Y I K A T H O M P S O N
B Y ; K I M B E R L Y M A N C I L L A S , C A L L I E S C H R I T T E R , K Y R A M I L E S , J E N I F F E R
D U R A N
DOES THAT MAKE SENSE?
Nov. 5 2012 Volume 1, issue 3
TYPES, DISTRIBUTION, AND FUNCTIONS OF
RECEPTORS:
Sensory Receptors definition- Sense organs in the peripheral nervous
SPECIAL system that enable the body to spreading molecules to move through, or
POINTS OF
INTEREST: permeate.
> Types, Distributions, and
functions of receptors Location– (Receptors can be Stimulus Detected– Activated by
>Location classified by their location (These receptors can be temperature such as hot
>Stimulus detected such as..) classified into five differ- and cold.
>Structure ent groups such as..)
 Exteroceptors:  Nociceptors
>Special senses:
Located in the
 Mechanoreceptors-
Activated by any type
 Smell
skin, oral cavity, Activated by of tissue damage, pain
 Taste eyes, ears, and nose. mechanical stimuli some receptors.
 Hearing Also sometimes called cutane- kind of “deform” or
 Balance ous receptors, because where change in receptor.
 photoreceptors
they are located. Turning into a generation
 Vision Receptor only in the
 Visceroceptors: receptor potential. Such as eye, responds or activates
 Process of Seeing
sound waves, or to light if the energy is
>Why don't deer see Hunt- Located are
ers who wear Bright or- equilibrium. great enough to cause a
ange? found internally mostly
disruption.
in organs or (viscera)  Chemoreceptors
>What is the difference
between "nearsighted" and when stimulated they can
and "farsighted"? How are Activated by
give off information about the
each of these corrected? chemicals. Responsible
internal environment.
for taste, and smell and
 Proprioceptors monitoring chemicals in
the blood.
These are
INSIDE THIS special types of
ISSUE:
Visceroceptors and
 Thermoreceptors
Smell 2
Structure (No matter how the
receptor is activated or where it is  merkel disks These
Taste 2 are responsible for
located the third important thing is
classified as the structure such as..) mediating sensations mechanoreceptors that
Hearing 2 of light or when sectioned show
 Free Nerve Endings These are discriminative touch. thick laminated connec-
the simplest and most common tive tissue capsules.
Balance 2
and the most spread out sensory  Meissner Corpuscle
These are large egg  Muscle Spindles & Golgi
receptors. They are both Extero-
Vision 3 shaped mechanore- tendon Organs These are
ceptors and Visceroceptors..
ceptors. When the most important stretch
Process of seeing 3  root hair plexuses These are ”deformed “ it gives off receptors dealing with
web like arrangements of free low vibrations. muscles and tendons,
nerve endings that surround hair classified as propriocep-
2 questions 3  Pacinian Corpuscles tors.
follicles and detect hair move-
These are large
ment.

2. DOES THAT MAKE SENSE? Page 2
SMELL- SPECIAL SENSES-
Olfactory receptors This TASTE-
is a diagram of the recep-
Taste Buds
tors of smelling. Olfactory
These are sense
epithelium consists of
organs that
yellow-colored epithelium
respond to
support cells .
gustatory, or
taste, stimuli.
Olfactory Pathways Mostly found on the soft
Set of nerve fibers conduct- palate.
ing impulses from olfactory Neural Pathway The gen-
Dogs have an receptors to the cerebral cortex . eration and propagation of
incredible an action potential, or
A dog's olfactory epithelium
sense of smell,
considerably more densely innervated, with a hundred nerve impulse, then trans-
that humans
don't have! times more receptors per square centimeter. mit the sensory input to
the brain.
DOGS VS HUMANS
“Although humans HEARING-
have a sense of
smell far less keen Hearing has three Middle ear- Consists of the ear had the little hairs that
than animals, some important parts that help ear canal and auricle when sound waves hit, it
individuals can you hear. becomes the sound that
which gather and move
distinguish between
Middle Ear the sound to your ear you hear. If you lose these
thousands of odors..
drum. hairs you will become
And most of us can
deaf.
only identify a Inner ear– this is part of
several hundred.” the ear where the ear Neuronal Pathways- is
Inner Ear
drum and 3 ear bones are this pass inside your ear
located , they convert that produces the sound s
sounds in the external ear that you hear. The sounds
and fluid waves in the ear. carry through the cochlea
and hits the nerves in your
Outer Ear Outer ear– This part of the
BALANCE-
The Sense of balance
includes three balance
systems that send signals
not only to each other but
to your brain about your
body movements.
Dynamic equilibrium is a
system in a steady state
because te forwards and
backwards motions
happen at a steady rate.

3. Page 3 VOLUME 1, ISSUE 3
VISION-
Structure of the eye–
Humors–
Approximately five
Aqueous hu-
sixths of the eye is
mor forms
protected by the bony
from the
socket. Only a small
blood in
anterior part of the
capillaries
eye is visible. There
(mainly in the
are three layers of the
ciliary body)
eye, the innermost
layer is the sclera the
middle layer is the
There are two cavities separated as anterior and posterior choroid, and the outer-
cavities. The anterior cavity lies right in front of the lens. The most layer the retina.
posterior cavity contains Vitreous humor which a substance
compared like soft gelatin.
2 questions-
Why don't deer see Hunters who wear Bright orange?
Deer have no red-sensitive cone
cells in their eyes, so they can't
tell red or orange from green and
brown. The Deer's view of the
scenes above were created with
Vischeck software which shows
the effects of color blindness.
Human View Deer View
What is the difference between "nearsighted" and "farsighted"? How are
each of these corrected?
Nearsighted is being unable to see things clearly unless they are relatively close to the eyes and farsighted is being
Unable to see things clearly especially if they are relatively close to the eyes; hyperopic. This can be corrected by eye-
glasses, contact lenses, and often LASIK or laser refractive surgery .