Lens Flashcards
Where are the newest fibers of the lens found
Cortex
Why is the cortex in your lens when 5 different from the 65
Cortecofibers surround it, these fibers then go to the adult nucleus
What sutures are found in the adult nucleus and cortex
stellate
Where is the lowest protein content of the lens fibers found?
cortex
Where are the newest fibers of the lens?
cortex
What are the junctions of the fibers?
ball and socket, inter-digitation, gap
What is the purpose of a ball and socket joint?
to allow for movement
what is the purpose of interdigitation?
to provide structure and support
Where are the bulk of the lens fibers?
cortex and adult fibers
what is the orientation of the lens fibers
hexagonal
what determines the amount of fibers in different animals
how much the lens is used
What is the shape of the fiber cell?
opposite end curvature (S)
what are the constrains on lens fibers?
Size (10mm long), polarity (apical and basal), shape (opposite end curvature)
Where is the highest protein content and highest refractive content in the lens
embryonic nucleus
Where do the lens fibre ends meet?
Y sutures
how long can lens fibers get?
10mm
what type of suture is anterior?
apical
What type of suture is posterior?
basal
What is the stellate shape?
star shape
Does the Y suture always remain
yes
Why must we branch from the Y suture?
because of length constraints
what type of y does the anterior surface exhibit
upright y
what type of y suture does the posterior surface exhibit?
upside down y
Where does the stellate branch from
Y suture
