Please enable JavaScript.
Coggle requires JavaScript to display documents.
MarkeciaBogard23 (Location and Function of Lens, Iris, Optic Disc, Macula…
MarkeciaBogard23
Location and Function of Lens, Iris, Optic Disc, Macula Lutea and Fovea Centalis
Iris-Located in front of the lens.Function is to allow light to the enter the eye through the pupil. This structure is a smooth muscle and sphincter muscle.
-
-
-
Fovea Centralis- located at the center of the macula lutea and gives us the clearest vision. Only cones here so bright colors are needed.
Sensory Receptor
Based on stimulus orgin
-
Proprioceptors: Sensitive to stimuli from muscles,tendons, ligaments and joints.
Send message to the central nervous system about out movement.
Located deep into the muscle
-
Based on stimulus
-
Chemoreceptor-Sensitve to chemicals. Also associated with blood, smell and taste
-
-
Mechanreceptor- Sensitive to touch, pain, pressure, vibrations and stretch.
-
Define as a structure that is sensitive to stimuli from their surroundings and they send message to the central nervous system
-
Three Tunics of the Eye
Vascular Layer (Choroid)
Absorbs light and keeps light from scattering. Helps nourish the other layers especially the retina.
-
-
-
-
-
-