Eye & Ear Anat/Physio
Tarsal Glands are modified sebaceous (produce oil) glands associated with eyelid edges
Ciliary glands are modified sweat glands that lye between eyelashes and ducts, open at eyelash follicals
Contrast the pressure difference of RV and LV?
RV pumps at a pressure point of 25mmHg
LV pumps pressure at about 120 mmHg
(Due to the difference in wall thickness)
What does is mean when something is refracted?
It means that there is some type of bending/ something is bent
The endocrine system acts slowly using what?
Hormones
What is anemia?`
low oxygen carrying ability of blood
What is the difference between convex and concave?
Convex is curved outward
Concave is curved inward
Where is the sinoatrial node located?
Right atrium
What does the real image of the retina look like?
It is reversed form left to right and upside down and smaller
What is a target organ?
An organ a given hormone only affects
Why are the pulmonary arteries blue while arteries are red?
They are blue because they have deoxygenated blood
What are the real name of photoreceptors?
Rods and Cones
Contrast Tachycardia and Bradycardia
Tachycardia have a heart rate of 100+ BPM
Bradycardia has a heart rate of 60 bpm
How does light from a close object affect the lens?
It makes it bulge thicker for close vision
Whats the difference between secretes and excretes?
Secretes is to release substance for bodily functions
Excretes is to release waste products from body
Why can't a patient with Type B blood receive a blood transfusion of type AB?
Because they have anti-a antibodies
What are the 3 layers of the eyeball wall?
1. Fibrous
2. Vascular
3. Sensory
Whats the difference between a pulmonary artery and a pulmonary vein?
Pulmonary arteries go to the lungs
Pulmonary veins comes back to the heart from the lungs
What is the process of refraction?
When light passes from one substance to another with different density
What does the hypothalamus Control?
The pituitary gland
Why do the Atria have thin walls and the vetricles have thick walls?
Atria only pumps blood to ventricles
Ventricles pumps blood outside to the heart
What is the round windows purpose?
Decompresses acoustic energy that enters cochlea
Where does each Heart chamber pump blood to? (RA, RV, LA, LV)
RA- pumps to RV
RV- pumps to lungs
LA- pumps to LV
LV- pumps to body
Light rays are refracted in the eye as they encounter what?
The cornea, the lens, Aqueous Humor, and Vitreous Humor
What is the pituatary gland?
Its the master endocrine gland
What is the difference between Erythrocytes, Leukocytes, and Thrombocytes?
Erythrocytes are red blood cells
Leukocytes are white blood cells
Thrombocytes are platelets (clotting) cells