Visual Receptors: Basics: Ms.H Flashcards
1
Q
What is the BLIND SPOT?
A
- The POINT OF ENTRY of the OPTIC nerve on the RETINA
- Which is INSENSITIVE to LIGHT
2
Q
What are CONE CELLS?
A
- Cells in RETINA which TRANSDUCE LIGHT energy into a GENERATOR POTENTIAL
- Based on WAVELENGTH of LIGHT received
3
Q
What are the 3 TYPES of CONE CELLS?
A
- Red (60%)
- Green (30%)
- Blue (10%)
4
Q
What is the FOVEA?
A
Where CONE CELLS are LOCATED
5
Q
What is the OPTIC NERVE?
A
- Nerve which TRANSMITS IMPULSES to the BRAIN
- From the RETINA at the back of the EYE
6
Q
What are PHOTORECEPTORS?
A
- Receptors that DETECT LIGHT stimuli
- And are LOCATED in the RETINA in ALL MAMMALIAN SPECIES
7
Q
What is the RETINA?
A
- INNERMOST layer of the EYE
- Contains PHOTORECEPTORS
8
Q
What is RETINAL CONVERGENCE?
A
MANY ROD cells connected to 1 BI-POLAR CELL
9
Q
What are ROD CELLS?
A
- Cells in RETINA which TRANSDUCE LIGHT energy into a GENERATOR POTENTIAL
- Based on the INTESNTITY of LIGHT received
10
Q
What is ACUITY?
A
The DETAIL / RESOLUTION the MAMMALIAN EYE can SEE in
11
Q
What is VISUAL SENSITIVITY?
A
The ability to DETECT LOW LIGHT INTENSITY
