Weeks #20 - 21
what do the eyelashes do?
protects border of eyelid
what is the purpose of metabolism?
chemical RXN occouring throughout the body to provide energy
What is the structure and function of Hemoglobin
structure= a protein containing o2 binds and which gives red color to the erythocyte
function= carries o2 in the body
what is the left ventricle n its purpose
thickest wall chamber which receives OB pumped from LA
What is Atrial Flutter?
condition which the hearts upper chambers beat to quickly
Where is the Retina located?
back of the eyeball behind the lens and vitreous humor
Why are many people with Color Blindness unaware of their condition?
bc they don't know they have it
what is the white buffy coat?
Thing whitish layer containing the remaining FE aka (formed elements)
Identify the 3 layers of the Heart wall
epicardium, endocardium, mayocardium
where is the atrioventricular located at?
located at junction of atria ventricles
Why can someone receive a cornea transplant
BC it has no blood cells, so it wont affect the immune system
Contrast how the Lens approaches light from a distant vs close object.
distant=lens doesn't need to change shape
close=lens bulge
Contrast Hormones and Metabolism
hormones= chemical messengers
metabolism= sum of chemical reactions
What is the major function of the Cardiovascular System?
transportation
what is electrical impulse?
flow of energy generated by specific cells in the the hearts electrical system which triggers contractions of heart muscles
what is the subascous gland?
fat n oil on edges of eyelid
Identify the 3 areas the Ear is divided into.
external, outer, middle , internal, inner
Contrast Secrete vs Excrete.
secrete= release substance for body
excrete= release waste
is the right side of the heart blue or red?
Blue, bc the veins are blue
Explain what Heart Block is.
heart rhythm disorder that occours when the electrical signals control the hearts beating slowed or interrupted
Describe the function of the Iris.
regulate amount of light entering eye
Identify the 2 functions for Cerumen (Earwax)
provides sticky trap for foreign bodies, and repels insects
Why is it important to measure a patient’s:
1. Hematocrit?
2. Buffy Coat?
1. measures % of RBC in blood
2. checks WBC's
what is the sternum?
breast bone located in center of chest connecting 2 sides of ribcage
what are heart murmurs?
sound of blood flowing through the heart due to a diseased heart