lab pg 1-2

Pacinian corpuscle

Help Detect deep pressure and high frequency vibration in the skin

Meissner corpsucle

Helps with detecting texture and low vibrations

Free nerve endings

They help act as pain receptors and help detect vibrations in temperature

Merkel disc

Helps detect soft touch, and shape

Olfactory nerves

transmit sensory information regarding odors from the nasal cavity to the brain

Superior Nasal concha

Structure

Middle nasal concha

Structure

Inferior nasal concha

Structure

Hard palate

separate the oral and nasal cavities, provide a rigid surface for chewing and swallowing

Sphenoidal sinus*

Structure

Tastebuds

Detect chemicals in our food for nutritional value and warn our body if it contains any toxicity

Taste hair

Detect chemicals in our food and translate them into nerve signals

Papillae of tongue

Help enhance perception of taste by housing taste buds

Medial canthus*

Structure

Lateral canthus*

Structure

Upper eyelid.

Protects, cleans, and lubricates the eye

Lower eyelid

Protect the eyeball from debris and maintain ocular hydration

Conrea

Acts as a physical barrier to protect the eyeball from debris.

Conjuctiva

Helps with lubrication and secreting mucus

Pupil

opening that controls how much light reaches the retina

Sclera

Tough white outer layer that protects the eye and helps maintain its shape.

Aqueous humor

Clear fluid that nourishes the cornea and lens and helps maintain eye pressure.

Suspensory ligament of the eye

Holds the lens in place and helps change its shape for focusing.

Lens

Focuses incoming light onto the retina.

Vitreous humor

Allowing light to pass directly to the retina and maintaining the lights spherical shape

Fovea centralis

High concentration of cones responsible for the sharpest, most detailed vision.

Macula Lutea

Central retinal area responsible for color perception and face recognition

Optic disc

Point where the optic nerve exits the eye

Optic Nerve

Carries visual information from the retina to the brain

Retina

Light-sensitive layer that converts light into nerve signals.

Choroid

Vascular layer that supplies blood and nutrients to the retina

Lacrimal gland

Produces tears to lubricate, clean, and protect the eye.

Interior and superior lacrimal canaliculi

draw excess tears away from the surface of the eye and safely transport them to the lacrimal sac

Lacrimal sac

collect excess tears and debris that drain from the eye

Nasolacrimal duct

drains excess tears from the eye into the nasal cavity

Superior oblique muscle

Main muscle in charge of eye movement

Superior rectus muscle

Helps with upward and indward eye movements

Medial rectus muscle

Moves the eye toward the nose.

Lateral rectus muscle

Moves the eye away from the nose.

Inferior rectus muscle

Moves the eye downward.

Inferior oblique muscle

Rotates the eye upward and outward.

Auricle *

Structure

External auditory canal

Carries sound waves to the eardrum.

Tympanic membrane

• Vibrates in response to sound waves.

Malleus

Transmits vibrations from the eardrum to the incus.

Incus

Passes sound vibrations from the malleus to the stapes.

Stapes

Transfers vibrations to the inner ear through the oval window

Eustachian tube

Equalizes air pressure between the middle ear and the throat.