External & Internal Eye Anatomy
what percentage of sensory receptors are in the eye
70%
When does emmetropia occur?
when the focal point is on retina
What type(s) of blood can be donated to people with type B?
What are the ventricular cells BPM.
20-40 BPM.
What happens if the cardiovascular system or respiratory system fails?
Cells will begin dying.
name the 3 layers that form the wall of the eyeball
fibrous layer, vascular layer, sensory layer
What is the vision term for myopia?
near-sighted vision
True or False. Type O can receive any blood type.
False, can only receive Type O
What does ICS stand for?
Intrinsic Conduction System
URT's are passage ways from ____ to ___.
Nose to larynx.
they provide the oily secretion lubricating the eye
True or False. The pupil is a rounded iris that blocks light from passing through.
False.
What is the genotype of a heterozygous Type A patient?
I^Ai
What are the roles of the heart valves?
To keep the blood flow in one direction.
What do both URT and LRT do?
They purify, humidify and warm incoming air.
True or False. The pupil is a rounded iris that blocks light from passing through.
False.
In what way does light approach the eye from a distant source?
In parallel rays.
When RBC are below the norm. and HB is below the norm. what disease would you have?
Anemia.
What color are your Pulmonary Veins and Pulmonary Arteries?
Pulmonary Veins= Red, Pulmonary Arteries= Blue
What are the differences between Arteries and Veins?
Arteries have thick walls, are muscular and raise blood pressure. Veins have thin walls, have valves that push blood through and lower blood pressure.
What light(s) do red cones respond to?
Red and green lights.
What are the names of the three osseous bones in order from closest to farthest from eardrum.
Malleus, Incus and Stapes
When RBC, Hb, and HCT are below the norm what disease would you have?
Malaria.
What will damage to the Av node do?
It will partially block ventricles control of SA node
What is the Alveoli the only area for?
Where gas exchange occurs.