Eye
where is the retina located?
behind the lens and pupil
Identify the 3 areas the ear is divided into
external, middle, internal
where do arteries veins conduct blood in?
arteries away from the heart veins towards the heart
Explain what heart block is
condition where ventricles begin to beat at own rate due to blockage
Why are people with color blindness not aware of their condition?
they adjust to how they see colors
How do pigmented cells in retina act as phagocytes?
engulfing and clearing shed photo receptor outer segments
Identify the 2 functions for cerumen
sticky trap for foreign bodies and repels insects
why can't a patient with with type A blood receive type O?
b/c it has anti- A & anti- B antibodies
What is the atrial flutter?
what happens in alveoli?
gas exchanges with blood only in the aveoli
Why is the cornea able to be donated?
does not contain blood vessels
What is the function of the round window?
allowing fluid within the cochlea to move by
where does the heart chamber pump blood to?
RA: Av triscupia valve into RV
RV: through pulmonary semi lunar
LA: through AV mitral valve
LV: through aortic semi lunar into aorta, body
What are heart murmurs?
abnormal or unusual heart sounds
Contrast secrete vs excrete
secrete: releasing substance
excrete: releasing substance waste product
What is the significance of the fovea centralis?
a sharp detailed vision
List the order the 3 ossicles vibrate from sound waves (1) to (3) incus, stapes, malleus
malleus, incus, stapes
Explain systemic circulation?
carries oxygen- rich blood from the left side of heart and returns 02- poor blood to the right side
what is fibrillation?
is a rapid uncoordinated quivering ventricles
What is buffy coat?
white blood cells
Why does the choroid contain a dark pigment?
limit uncontrolled reflection
Humans can hear sounds in which frequency range and when is this frequency greatest?
20 Hz to 20,000 Hz
During the step #3, where does the wringing contraction start and move towards?
at the heart apex & moves up the atria
contrast the pressure difference of RV vs LV
RV= 120 mm/g
LV= 25
Identify 2 characteristics of sinusitis
headache, block with mucus