Anatomia - Occhio

in data
Di seguito alcune immagini che possono facilitare la comprensione di alcune strutture che abbiamo trattato in classe 5E BTS: 
Eye showing the inner surface of the iris, pupil, and ciliary processes. The lens was removed to show the posterior surface of these structures. The iris regulates the amount of light that enters the pupil by changing its size and it is what gives the eye its color. SEM **On Page Credit Required**:
Corpo ciliare e pupilla
Iride



Vertical section of a chick retina
 (400x)

Retina. Coloured scanning electron micrograph (SEM) of rods (yellow) and cones (green) in the retina of the eye. The outer nuclear layer is purple. Magnification x1800 when printed at 10 centimetres wide. [F0010041] Incredible!!:
Coni (verdi) e Bastoncelli (grigi). Lo strato esterno nucleare è in viola. SEM x1800

Scanning electron micrograph of rods and cones in the eye. Rods are long nerve cells which respond to dim light, enabling images to be detected. Cones are shorter cells which detect color. Rods and cones pass visual signals through the optic nerve to the brain. Credit: RALPH C. EAGLE, JR. /SCIENCE PHOTO LIBRARY:
Coni e Bastoncelli della retina . Microscopio a scansione elettronica.

How the Eye Sees in Colour.:
Come gli occhi vedono a colori


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