TopHat Questions Flashcards
What happens when a blood pressure cuff is completely inflated around your upper arm (brachium)?
a) blood flow to your forearm (antebrachium) and hand is completely arrested
b) the artery in your brachium is completely occulated (no flow)
c) you have no radial pulse (pulse at your wrist)
d) a and b
e) a, b and c
e) a, b and c
Why is a factor of 2/3 in the equation for determining mean arterial pressure (MAP)
a) 1/3 of MAP is diastolic pressure
b) 1/3 of MAP is from total peripheral resistance (TPR)
c) systole comprises 2/3 of the cardiac cycle
d) diastole comprises 2/3 of the cardiac cycle
d) diastole comprises 2/3 of the cardiac cycle
If afterload is high, what happens to end-systolic volume (ESV)?
a) ESV is decreased
b) ESV is increased
c) ESV stays the same
b) ESV is increased
Why is the return of venous blood to the heart impaired when heart rate is very high?
a) inotrophy (contractility) is too low
b) dromotrophy is too low
c) lusitrophy is too low
d) chronotrophy is too low
c) lusitrophy is too low
Someone that has blood type “O” can receive blood from:
a) O
b) A
c) B
d) AB
e) O and AB
a) O
What is the difference between sickle-cell trait and sickle-cell disease?
a) Sickle-cell disease life expectancy = 40 years
b) Only people of African decent can get sickle cell disease
c) Only people with sickle-cell disease have sickled RBC’s
d) People with sickle-cell disease are immune to malaria
a) Sickle-cell disease life expectancy = 40 years
What type of protein is hemoglobin?
a) A tertiary (globular) protein
b) an enzyme
c) a quaternary protein
d) a transport protein
e) b and c
f) c and d
f) c and d
What kind of capillaries would be present in the liver to remove, warn out and decrepit RBCs from circulation?
a) Continuous capillaries
b) Sinusoidal capillaries
c) Fenestrated capillaries
d) Myelinated capillaries
b) sinusoidal capillaries
How long do you think a RBCs lifespan is?
a) 3-4 hours
b) 3-4 days
c) 3-4 months
d) 3-4 years
c) 3-4 months
What are the physiological benefits of a biconcave disc shaped RBC?
a) Enhanced flexibility (foldability)
b) Increase surface area for exchange of CO2 and O2
c) increased ability to stack up like dinner plates
d) increased volume for hemoglobin storage
e) a and b
f) c and d
e) a and b
can you be anemic and have a normal hematocrit
a) yes
b) no
a) yes
Which of the following best describes a hematocrit?
a) the % of RBCs in a packed cell volume
b) the number of RBCs in sample of whole blood
c) the fraction of plasma in sample of whole blood
d) (the volume of whole blood) - (the volume of plasma)
b) Number of RBCs in sample of whole blood
In secondary adrenal insufficiency:
a) ACTH levels are high
b) cortisol levels are low
c) CRH levels are normal or elevated
d) b and c
e) a, b and c
d) b and c
If Evista helps to increase bone density, then it must:
a) increase the OPG/RANKL ration
b) decrease the OPG/RANKL ratio
a) increase the OPG/RANKL ratio
Which of the following is correct regarding an individual with Grave’s disease?
a) have decreased plasma thyroid hormone (T3 and T4 levels)
b) increased thyroid releasing hormone (TRH) levels
c) decreased thyroid stimulating hormone (TSH) levels
c) decreased thyroid stimulating hormone (TSH) levels
