Introduction And Ocular Terminology Flashcards
Cut to create right/left halves (medial)
Sagittal
Cut through midline to create equal left and right halves
Mid sagittal
Frontal cross section
Coronal
Horizontal cross section
Transverse
Eye movement towards the midline
Addiction
Eye movement away from the midline
Abduction
Eye movement: top of eye rotates toward midline
Intorsion
Eye movement: top of eye rotates away from midline
Extortion
Eye movement: eye moves/looks up
Elevation
Eye movement: eye moves/looks down
Depression
What does the outer fibrous layer of the eye form?
Connective tissue that forms the cornea and sclera
The middle vascular layer is composed of
The iris, ciliary body, and choroid
The inter neural layer of the eye is the
Retina
What are the 3 chambers of the eye?
- anterior chamber
- posterior chamber
- vitreous chamber
The _________ chamber is bounded in front by the cornea and posteriorly by the iris and anterior surface of the lens
Anterior
The ________ chamber lies behind the iris and surrounds the equator of the lens, separating it from the ciliary body.
Posterior
The anterior and posterior chambers are continuous with one another through the ______.
Pupil
What does the anterior and posterior chamber both contain?
Aqueous humor that is produced by the ciliary body
What does the aqueous humor provide?
Nourishment for the surrounding structures, particularly the cornea and lens
What is the largest chamber?
Vitreous chamber
What chamber lies adjacent to the inner retinal layer and is bounded in front by the lens
Vitreous chamber
Where is the vitreous humor?
In the vitreous chambers
Where do the anterior and posterior chambers meet?
Edge of iris in pupil
Lens and cornea are too strong or the eyebal is too long
Myopia
Cornea and lens is too weak or eyeball is too short
Hyperopia
Corneal and lens strength matches the axial length of the eyeball
Emmetropia
The distance between the anterior and posterior poles of the eye.
Axial length
What is the axial length of the human eye
23.30mm
Anterior pole
Apex of cornea
Posterior pole
Fovea
The interior lining of the eyeball, including the retina, optic disc, and the macula
Fundus
Term pertaining to the surface of the eye
Bulbar
Term pertaining to the eyelids
Palpebral
Takes the form of sheets of epithelial cells that either cover the external surface of a structure or that line a cavity
Epithelium
Epithelial cells like on a ____________ that attaches them to underlying connective tissue
Basement membrane
Provides structure and support and is a space filler for areas not occupied by other tissues.
Connective tissues
What does connective tissue consist of
Cells, fibers, and ground substances
Major component of much of the eyes connective tissue. Composed of protein macromolecules of tropocollagen that have a coiled helix of three polypeptide chains
Collagen
What is collagen made of
Protein macromolecules of tropocollagen that have a coiled helix of three polypeptide chains
_____ muscle is controlled by the motor nervous system
Striated
_____ muscle is controlled by the autonomic nervous system
Smooth
What are the main components of nervous tissue
Neuron Axon Dendrite Neuroglia Myelin/non myelin
Basic unit of nervous tissue
Neuron
Transmits signals in nervous tissue
Axon
Receives signals in nervous tissue
Dendrite
Schwann/oligodendrocytes/astrocytes
Neuroglia
Produce myelin
