Term 3 Flashcards
What does the free nerve ending pick up ?
Pain , heat and cold itch
What does the encapsulated nerve ending pick up ?
Pressure and touch
What is referred pain ?
- Pain that is picked up in an organ but felt somewhere else
- viceral pain that is felt as cutaneous pain
What does cutaneous mean ?
Skin or surface
What is the conjunctiva ?
The pink part of the eye
Lies inside of the eyelid
What is the sclera ?
The white part of the eye
What is the retina ?
The interior coating of the eye , where visual action takes place
Where is the exterior coating of the eye ?
Sclera
A tough fibrous membrane in the front
What is the middle layer of the eye called ?
Choroid layer (brownish color ) Between the sclera and retina
What is the role of the lens , sometimes called the crystal lens ?
For focusing / accommodation
What are the lens controlled by ?
The ciliary muscle
It stretches it out to see close or long distance
What is the pupil ?
The opening or the black hole of the eye
What’s the color portion of the eye that around the pupil ?
Iris
What does the iris do ?
- It makes the pupil bigger or smaller
- it’s called pupillary dialation
What accommodate/pushed the lens and iris?
Ciliary muscle
What is the cornea ?
- Part if the sclera
- Allows light waves to first enter the eye /the window of the eye
Where is the aqueous humor found ?
Water in the front
Anterior chamber
Where is the vitreous humor found ?
- Jelly like liquid
- Found in the posterior chamber
- it gives the eye a substance
Where are cones found an what is it for ?
In the retina
For color
Where are the rods& cones found ?
On the retina
What are the Rods for ?
Shading
Remember rod the vampire ;darkness
What is the role of lacrimal glands ?
Produce tears
Where are the lacrimal glands found ?
The outer cantus
What is Lysome ?
Body’s natural antiseptic
Found in tears and saliva