Nov. 21, 2007
EXAM 4 - VERSION A
..) on your answer sheet.
You can keep this list of exam questions. You may write on it if you wish.
This form will be the only way you will know what answers you marked on the scantron.
Each question has only 1 correct answer. Indicate your choice on the answer sheet - scantron.
If you need clarification for a question, raise your hand & stay in your seat. I will come to you.
If you are stumped by a question, place a mark by it, and return to it later.
> = greater than & < = less than
ERV = expiratory reserve volume
LV = left ventricle
RV = right ventricle
Ach = acetylcholine
HDL = high density lipoprotein
NE = norepinephrine
RR = respiration rate
AV = atrioventricular
HP = hydrostatic pressure
NFP = net filtration pressure
SA = sinoatrial
BP or HP = blood (hydrostatic) pres.
HR = heart rate
OP = osmotic pressure
SV = stroke volume
CO = cardiac output (or carbon monoxide)
IRV = inspiratory reserve volume
RA = right atrium
TV = tidal volume
CRP = C-reactive protein
LA = left atrium
RMV = respiratory minute volume
VC = vital capacity
The RV is weaker than the LV because the RV _____ than the LV.
pumps less blood
pumps less viscous blood
moves blood a shorter distance
moves more blood by diffusion
The ______carries deoxygenated blood into the RA.
Trace the shortest pathway of blood flow through these structures, after blood enters the lungs: 1 - aorta, 2 - AV valve, 3 - LA, 4 - semilunar
valve, 5 - pulmonary vein, 6 - LV.
5, 3, 2, 6, 4, 1
1, 3, 2, 6, 4, 5
5, 3, 4, 6, 2, 1
1, 3, 4, 6, 2, 5
Stenosis of an AV valve may be caused by ______ and leads to a(n) _______ flow of blood past the valve.
atherosclerosis - increased
atherosclerosis - decreased
dehydration - increased
dehydration - decreased
The “fibrous skeleton” of the heart holds the ____ valves in place & prevents direct electrical transmission between the _____.
AV - right & left sides
semiilunar - atria & ventricles
AV & semilunar - atria & ventricles
AV & semilunar - right & left sides
Cardiac muscle cells differ from skeletal muscle cells because the cardiac cells have _______ than skeletal muscle cells.
Cardiac muscle cells are autorhythmic because ____ “leak” into the cells & the cells form a single motor unit because they are linked by ___.
potassium ions (K
) - covalent bonds
sodium ions (Na
) - gap junctions
chloride ions (Cl
) - ionic bonds
any of these ions - smooth muscle
The “back-up” pacemaker of the heart is the _____ node. Its primary role is to ____ the transmission of the action potential to the ventricles.