The Special senses

What are the special senses

hearing, touching, seeing, smelling, tasting

sensory input

the brain combines, interprets, and acts on information

What happens when neural receptors are activated in the special sense organs

When neural receptors are activated in the special sense organs, a neural impulse is transmitted to the brain.

what role do specialized organs play in the sentences

Specialized organs detect and process stimuli, then send signals to the brain for interpretation

how do your senses help keep you safe

Your senses let your brain know what is going on around you and help keep you safe by warning you of any danger.

What are sensory receptors, and what is their function

Sensory receptors are specialized cells, usually neurons, that detect and respond to physical and chemical stimuli.

What types of inputs are sensory receptors sensitive to

Most sensory receptors are sensitive to highly specific inputs, or sensory modalities, such as movement, odor chemicals, or visible light photons.

where are general receptors found

throughout the body

Where are sensory receptors located in the body

Sensory receptors are present in the skin, visceral organs (meaning in the abdominal cavity), muscles, and joints

what are some special receptors

chemoreceptors

what type of doctors specializes in eyes

ophthalmologist

what type of doctor see patient for routine eye exams

optometrist

what is the primary sense organ for vision

the eye

what surrounds and protect the eye

the orbital socket of the skull

besides the orbital socket what other structures protect the eye

The conjunctiva, sclera, and cornea also help protect the eye.

Conjunctiva

a clear colorless mucous

membrane that lines the eye lids and covers

the eye.

Sclera

known as the “white part of the eye" it is the fibrous outer layer of the eye that maintains eye shape.

Cornea

the transparent anterior portion of the sclera, protects the iris and pupil, promotes most of the optical eye power.

which senses do we use the most

vision

which senses do we use the least

smell

blephar/o

eyelid

corne/o

cornea

lacrim/o

tears

olfact/o

smell

phot/o

light

-ism

process; condition

-opia

vision condition

-ptosis

droop; sag; prolapse;

protrude

-sclerosis

hardening; thickening

-tomy

process of cutting; incision

ambly/o

dull; dim

glauc/o

gray

presby/o

old age

Which type of photoreceptor in the retina

is responsible for seeing in dim light?

rods

What are the purposes of the aqueous and

vitreous humors?

The aqueous humor gives the eyeball its shape, cleanses the eye, and provides nutrients to the cornea and lens; the vitreous humor helps keep the retina in place

Which nerve transmits balance- and hearing related nerve impulses to the brain?

vestibulocochlear nerve

Where in the brain do olfactory nerves originate?

olfactory bulb

Amblyopia

known as "lazy eye," is a vision disorder where one eye develops significantly weaker vision than the other eye.

Cataract

a common eye condition that cause the lens of the eye to become cloudy.

Dacryocystitis

infection/inflammation of the tear sacs

what is the natural remedy of glaucoma

weed

Glaucoma

a group of eye diseases that damage the optic nerve, which carries visual information from the eye to the brain.

Astigmatism

an eye condition that occurs when the cornea or lens of the eye is not perfectly round.

Myopia

Nearsightedness is a common vision condition in which close objects look clear but far objects look blurry

Presbyopia

common age-related condition that affects the eye's ability to focus on near objects

Exotropia

a condition where one or both eyes turn outward away from the nose

Vitreous floaters

are small, dot-like or thread-like objects that appear to float in the field of vision.

What eye condition is characterized by repetitive, usually involuntary movements of one or both eyes?

nystagmus

What is the medical term for farsightedness?

hyperopia

Audiometry

hearing test

Otoscopy

evaluate and diagnose conditions and diseases of the external and middle ear

Tuning fork tests

examinations used to assess hearing loss