BIO 282L quiz 2

actin

- thin filament
- troponin and tropomyosin

myosin

- thick filament
- head and tail

parts of the sarcomere include

- z line
- h zone
- I bands
- A band

I bands

thin filaments

a bands

thick filaments

myopia

- nearsightedness
- ray focuses in front of retina
- concave lens corrects

hyperopia

- farsightedness
- ray focuses behind retina
- convex lens corrects

astigmatism

- rays do not focus
- uneven lens corrects

the external ear includes...

- pinna
- external auditory canal
- tympanum

the middle ear includes...

- malleus
- incus
- stapes

the inner ear includes...

- cochlea
- vestibular apparatus

erythrocytes

red blood cells

leukocytes

white blood cells

RBC contains ___ for O2 transport

hemoglobin

RBC are produced in the ___

bone marrow

the production of RBC are regulated by ___

erythropoietin

blood group A can give blood to

A and AB

the antibody for blood group A is

B

blood group AB can give blood to

AB

the antibody for blood group AB is

none

blood group AB can receive blood from

AB, A, B, and O (universal receivers)

blood group O can give blood to

AB, A, B, and O (universal donors)

what is the resting membrane value of an action potential

-70 mV (Na+/K+ imbalance)

what is the threshold value of an action potential

-55 mV (all or none)

what is the flow of blood through the heart

(answer in ur head)

lub sound in heart indicates

closing of the AV valves

dub sound in heart indicates

closing of semilunar valves

cardiac output (CO) equation

stroke volume (SV) x heart rate (HR)