Presented by Kami Dykes

Receptors and Somatic Senses 1.___ are receptors that are sensitve to changes in the

concentrations of chemicals. 2.Whenever tissues are damaged, ___ receptors are likely to be

stimulated. 3. Receptors that are sensitive to temperature changes are called

___. 4.___ are sensitive to changes in the light energy. 5.___are sensitive to changes in pressure or to movement of fluid. 6. A sensation may seem to fade away when receptors are

continuously stimulated as a result of ___ adaptation. 7. The body can only stand water heated to ___.

Chemoreceptors 120 F sensory pain thermoreceptors photoreceptors mechanoreceptors

Word Bank

Temporal bone

auricle

Semi-circular canalsVestibulocochlear

nerve

cochlea

Eustachian

Tympanic membraneExternal Acoustic meatus

Ear

Semicircular canals- contains endolymph

Stapes

Vestibulochlear nerve (auditory)

Tympanic membrane

Incus

Malleus

Cochlea

Vestibule

External Ear

Eustachian

Tube

AuricleSemicircular canals

Incus

Malleus

Stapes Cochlea

Vestibulochlear nerve (auditory)

Oval windowRound windowTympanic cavity

Pharynx

Tympanic membrane

External acoustic meatus

The Ear Auditory tube

Ceruminous gland External auditory

meatus Malleus

Osseous labyrinth Scala tympani Scala vestibuli

Stapes Tectorial membrane

Tympanic cavity Tympanic membrane

vestibule

Auditory ossicle attached to tympanic membrane

Air-filled space containing auditory ossicles

Contact hair of hearing receptors Leads from oval window to apex of

cochlea S-shaped tube leading to tympanic

membrane Wax-secreting structure Cone-shaped, semitransparent

membrane attached to malleus Auditory ossicle attached to oval

window Bony chamber between the cochlea

and semicircular canals Bony canal of inner ear in temporal

bone Connects middle ear and pharynx Extends from apex of cochlea to round

window 12-26

sclera

iris

pupil

corneamuscle

Iris

Pupil

Lens

Vitreous humor

Sclera

Optic disc- blind spot

Fovea centralis

Retina

Structure of the Eye

Lateral rectus

Retina

Choroid coatSclera

Vitreous humor

Fovea centralis

Optic nerve

Optic disc

Posterior cavityMedial rectus

Anterior chamberPosterior chamber

Anterior cavity

Ciliary body

Suspensory ligaments

Iris

Lens

Pupil

Cornea

Aqueous humor

Aqueous humor

Cornea Iris

Lacrimal gland Lysozyme Optic disc

Retina Sclera

Vitreous humor

White part of outer tunic Transparent anterior portion of

outer tunic Secretes tears Fills posterior cavity of eye Area where optic nerve

orginates Smooth muscle that controls

light intensity Fills anterior and posterior

chambers of the anterior cavity Contains visual receptors call

rods and cones Antibacterial agent in tears

Structure of the Eye

3 Knives Experiment

Use two cold knives with a hot knife in the middle.

The brain flips out and senses it as pain.

Melissa Mr. Jones