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48 terms

Dr. McCann Prelab on the Anatomy of the Eye

External Anatomy of the eye: Accessory structures: eyebrow, eyelashes, lacrimal apparatus, and six extrocular eye muscles
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eye lashes
what are the short hairs that project from the border of each eyelid?
eye lashes and eye brows
what two accessory structures protect the eye ball from foreign objects, such as perspiration and dust, and partially shade the eyeball from the sun
foreign objects
the eye lashes and eye brows protect the eyeball from what?
eye lashes and eye brows
what protects the eyeball from perspiration, dust, and partially shade the eyeball from the sun?
sebaceous ciliary glands
what type of glands are located at the base of the hair follicles, and help lubricate the eyeball?
help lubricate the eyeball
the sebaceous ciliary glands help do what for the eye ball?
base of the hair follicles
the sebaceous ciliary glands are located at the base of what?
sebaceous ciliary glands
what type of sebaceous glands are located at the base of the hair follicles, and help lubricate the eyeball?
sty
when the sebaceous ciliary glands are blocked, they become inflamed, this creates what?
when sebaceous ciliary glands are blocked
what causes a sty in the eye?
conjunctivitis
inflammation of the conjuctiva is called what?
bacteria, dust, smoke, or air pollutants
conjunctivitis can be caused by what? Hint: four things
tear
lacrimal means what?
lacrimal
a tear is called what?
lacrimal glands, lacrimal canals, lacrimal sac, and nasolacrimal duct
the lacrimal apparatus consists of what four things
lacrimal apparatus
the lacrimal glands, lacrimal canals, lacrimal sac, and nasolacrimal duct; make up what?
superior and lateral to each eyeball
the lacrimal glands can be found where on each eyeball?
lacrimal glands
which glands are superior and lateral to each eyeball?
lacrimal duct
each lacrimal gland contains 6 to 12 excretory what?
lacrimal glands
lacrimal ducts are contain in what?
lacrimal duct
what delivers a slightly alkaline solution the the anterior surface of the eyeball?
lacrimal fluid of tears
the lacrimal duct delivers a slightly alkaline solution the the anterior surface of the eyeball, this solution can be called what? Hint: two answers
lacrimal fluid
what type of fluid cleans, moistens, and lubricates the surface of the eyeball?
cleans, moistens, and lubricates the surface of the eyeball
the lacrimal fluid does what to the surface of the eyeball? Hint: three things
lacrimal duct
what delivers lacrimal fluid?
lyozyme
lacrimal fluid contains an antibacterial enzyme called what?
antibacterial enzyme
lyozyme is what?
lyozme in lacrimal fluid
what attacks any bacteria that may be on the surface of the eyeball?
medially across the eyeball surface
does the lacrimal fluid move laterally or medially across the eyeball surface?
medially and enters two small openings of the medial canthus
lacrimal fluid moves how across the eyeball surface and enters two small openings of the what?
two small openings
the medial canthus how many openings, that lacrimal fluid enters?
superior and inferior lacrimal puncta
what are the two small openings of medial canthus called?
openings
puncta means what?
nasolacrimal duct
the superior and inferior lacrimal puncta lead to an expanded portion of what duct?
lacrimal sac
nasolacrimal duct are called what?
nasolacrimal duct
lacrimal sac are what kind of duct?
nasolacrimal duct
which duct drains lacrimal fluid into the nasal cavity?
drains lacrimal fluid into the nasal cavity
nasolacrimal duct do what?
superior rectus, inferior rectus, medial rectus, lateral rectus, superior and inferior oblique muscle
what are the six extraocular muscles that control the movements of the eyeball?
superior rectus, inferior rectus, medial rectus, lateral rectus
which of six extraocular muscles are considered straight muscles?
superior and inferior rectus
which of the six extraocular muscles move the eyeball up and down?
medial and lateral rectus
which of the six extraocular muscles move the eyeball side to side?
diagonally on the eyeball
the superior and inferior oblique muscle attach how on the eyeball?
trochlea
the superior oblique muscle has a tendon passing through the what?
superior oblique muscle
which extraocular muscle has a tendon passing through the trochlea?
located on the upper orbit
the trochlea is located on which orbit?
superior oblique muscle
which oblique muscle pulls the eyeball downward?
inferior oblique muscle
which oblique muscle pulls the eyeball upward?