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Questions and Answers
superficial layer of the eyeball
superficial layer of the eyeball
2 parts of the fibrous tunic
2 parts of the fibrous tunic
3 layers of the eyeball
3 layers of the eyeball
the “white of the eye”
the “white of the eye”
covers the entire eyeball except the cornea; gives shape to the eyeball
covers the entire eyeball except the cornea; gives shape to the eyeball
opening in the junction of the sclera and cornea
opening in the junction of the sclera and cornea
parts of vascular tunic
parts of vascular tunic
anterior position of the vascular tunic: dark brown in color because it contains melanin- producing melanocytes
anterior position of the vascular tunic: dark brown in color because it contains melanin- producing melanocytes
produce the pigment melanin
produce the pigment melanin
present in choroid that absorbs stray light rays which prevents reflection and scattering of light within the eyeball
present in choroid that absorbs stray light rays which prevents reflection and scattering of light within the eyeball
2 parts of cilliary body
2 parts of cilliary body
extends from the cilliary process that attach to the lens
extends from the cilliary process that attach to the lens
protrusions or folds on the internal surface of the cilliary body
protrusions or folds on the internal surface of the cilliary body
circular band of smooth muscles
circular band of smooth muscles
changes the tightness of the zonular fibers which alters the shape of the lens, adapting it for near far vision
changes the tightness of the zonular fibers which alters the shape of the lens, adapting it for near far vision
highly vascularized that is located at the posterior portion of the vascular tunic
highly vascularized that is located at the posterior portion of the vascular tunic
colored portion of the eyeball and is shaped like flatten donut
colored portion of the eyeball and is shaped like flatten donut
suspended between the cornea and lens
suspended between the cornea and lens
it regulates the amount of light entering the eyeball through the pupil
it regulates the amount of light entering the eyeball through the pupil
hole in the center of the iris; appears black because of heavily pigmented back of the eye (choroid and retina)
hole in the center of the iris; appears black because of heavily pigmented back of the eye (choroid and retina)
regulate pupil diameter in response to light levels
regulate pupil diameter in response to light levels
third and inner layer of the eyeball
third and inner layer of the eyeball
parts of retina
parts of retina
site where the optic nerve exits the eyeball
site where the optic nerve exits the eyeball
branch of ophthalmic artery
branch of ophthalmic artery
drains blood from the retina through the optic disc
drains blood from the retina through the optic disc
sheet of melanin containg epithelial cells: located between the choroid and the neural part of retina
sheet of melanin containg epithelial cells: located between the choroid and the neural part of retina
multilayered outgrowth of the brain
multilayered outgrowth of the brain
lies behind the pupil and iris, within the cavity of the eyeball
lies behind the pupil and iris, within the cavity of the eyeball
arranged like the layers of an onion that makes up the refractive media of the lens
arranged like the layers of an onion that makes up the refractive media of the lens
focus images on the retina to facilitate clear vision
focus images on the retina to facilitate clear vision
two cavities which the lens has divided the interior of the eyeball
two cavities which the lens has divided the interior of the eyeball
space anterior to the lens
space anterior to the lens
lies between the cornea and the iris
lies between the cornea and the iris
lies behind the iris and lens
lies behind the iris and lens
transparent watery fluid that nourishes the lens and cornea
transparent watery fluid that nourishes the lens and cornea
completely replaced about every 90 minutes
completely replaced about every 90 minutes
larger posterior cavity of the eyeball
larger posterior cavity of the eyeball
transparent jellylike substance that holds the retina flush against the choroid
transparent jellylike substance that holds the retina flush against the choroid
pressure in the eye and is produced mainly by the aqueous humor and partly by the vitreous body
pressure in the eye and is produced mainly by the aqueous humor and partly by the vitreous body
bend at the junction between two substances
bend at the junction between two substances
minimum distance from the eye
minimum distance from the eye
it occurs when viewing distant objects wherein the ciliary muscle of the ciliary body is relaxed and the lens is flatter because it is STRETCHED in all directions by taut zonular fibers
it occurs when viewing distant objects wherein the ciliary muscle of the ciliary body is relaxed and the lens is flatter because it is STRETCHED in all directions by taut zonular fibers
Visual Pathway
Visual Pathway
large region where the visual fields of the two eyes overlap
large region where the visual fields of the two eyes overlap
2 regions of the visual field of each eye
2 regions of the visual field of each eye
molecules in the air
molecules in the air
space inside the nose
space inside the nose
3 types of epithelial cells in lined with our nose
3 types of epithelial cells in lined with our nose
bipolar neurons that contain the olfactory cilia
bipolar neurons that contain the olfactory cilia
hair like projections that have the receptors that arr stimulated by the odorants
hair like projections that have the receptors that arr stimulated by the odorants
these are columnar epithelial cells that provide physical support, nourishment, insulation to the olfactory receptor cells
these are columnar epithelial cells that provide physical support, nourishment, insulation to the olfactory receptor cells
these are stem cells that continually divide to produce new olfactory receptor cells
these are stem cells that continually divide to produce new olfactory receptor cells
epithelium lining the nasal cavity
epithelium lining the nasal cavity
collection of axons from different cells
collection of axons from different cells
temporal part of the cerebral cortex where consciousness of smell begins
temporal part of the cerebral cortex where consciousness of smell begins
area of gray matter just below the frontal lobe of the cerebrum
area of gray matter just below the frontal lobe of the cerebrum
sensory structures that detect taste stimuli
sensory structures that detect taste stimuli
oval shaped body found in elevations on the tounge
oval shaped body found in elevations on the tounge
elevations on the tongue
elevations on the tongue
3 types of epithelial cells in a taste bud
3 types of epithelial cells in a taste bud
these have microvilli that picks up the chemical stimuli from anything ingested
these have microvilli that picks up the chemical stimuli from anything ingested
bring physical support to the gustatory receptor cells
bring physical support to the gustatory receptor cells
stem cells located at the base which produce new supporting cells
stem cells located at the base which produce new supporting cells
conscious perception of taste arises
conscious perception of taste arises
ability to percieve sound
ability to percieve sound
create sound waves
create sound waves
collected by the auricle and pass through the external auditory canal toward the ear drum
collected by the auricle and pass through the external auditory canal toward the ear drum
area where sound recognition happens
area where sound recognition happens
position of the body in relation to gravity
position of the body in relation to gravity
maintenance of the body in response to sudden movement such as rotational movement
maintenance of the body in response to sudden movement such as rotational movement
receptor organs for equilibrium
receptor organs for equilibrium
what is included in the vestibular apparatus
what is included in the vestibular apparatus
two chambers that contain a specialized epithelium called maculae
two chambers that contain a specialized epithelium called maculae
this i a specialized epithelium
this i a specialized epithelium
a gelatinous mass, glycoprotein layer
a gelatinous mass, glycoprotein layer
layer of defense calcium carbonate crystals that extends over the entire surface of the otolithic membrane
layer of defense calcium carbonate crystals that extends over the entire surface of the otolithic membrane
3 semicircular ducts
3 semicircular ducts
two vertical ducts
two vertical ducts
horizontal duct
horizontal duct
dilated portion of each duct
dilated portion of each duct
small elevation
small elevation
covera the crista and a mass gelatinous material
covera the crista and a mass gelatinous material
known as emmetropic eye and can sufficiently refract light rays from an object 6 m (20ft) away
known as emmetropic eye and can sufficiently refract light rays from an object 6 m (20ft) away
nearsightedness; eyeball is too long relative to the focusing power of the cornea and lens
nearsightedness; eyeball is too long relative to the focusing power of the cornea and lens
these individuals can see close objects clearly, but not distant objects
these individuals can see close objects clearly, but not distant objects
these individual can see distant objects clearly, but not close ones
these individual can see distant objects clearly, but not close ones
farsightedness; eyeball length is short relative to the focusing power of cornea and lens
farsightedness; eyeball length is short relative to the focusing power of cornea and lens
either the cornea or the lens has an irregular curvature; as a result, parts of the image are out of focus, and thus vision is blurred or distorted
either the cornea or the lens has an irregular curvature; as a result, parts of the image are out of focus, and thus vision is blurred or distorted
significant or total hearing loss
significant or total hearing loss
2 types of deafness
2 types of deafness
type of deafness where there is a damage of the hair cells in the cochlea or the nerves themselves
type of deafness where there is a damage of the hair cells in the cochlea or the nerves themselves
type of deafness wherein an impairment of the mechanism of the external and or middle ear caused by deafness
type of deafness wherein an impairment of the mechanism of the external and or middle ear caused by deafness
provide us with the conscious awareness of the position and movements of the head and limbs
provide us with the conscious awareness of the position and movements of the head and limbs
small thickened region
small thickened region
2 kinds of cells that are consist in the maculae
2 kinds of cells that are consist in the maculae
ability to percieve the same scent decreases gradually
ability to percieve the same scent decreases gradually
bone where nerves passes and divides the brain and the nasal cavity
bone where nerves passes and divides the brain and the nasal cavity
ability to percieve stimuli
ability to percieve stimuli
means by which the brain recieves information about the environment and the body
means by which the brain recieves information about the environment and the body
process initiated by stimulating sensory receptors
process initiated by stimulating sensory receptors
respond to stimuli by generating action potentials
respond to stimuli by generating action potentials
2 divisions of senses
2 divisions of senses
2 groups/division of senses
2 groups/division of senses
