Dr. McCann Prelab on the Anatomy of the Eye

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48 terms · External Anatomy of the eye: Accessory structures: eyebrow, eyelashes, lacrimal apparatus, and six extrocular eye muscles

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?

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