lab q's

Created by smilinailynne1 

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50 terms

rouleaux formation is characterized by

a increase in ESR

ESR stands for

erythrocyte sedimentation rate

Erythrocyte sedimentation relies upon _______.

gravity

which of the following had the fastest sedimentation rate? the individual with angina pectoris, the individual with sickle cell anemia, the healthy individual, or the individual suffering a myocardial infarction?

the individual suffering a myocardial infarction

Which sample did NOT settle at all in one hour? the individual suffering a myocardial infarction, the individual with angina pectoris, the individual with sickle cell anemia, or the healthy individual?

the individual with sickle cell anemia

angina pectoris is

the heart not getting enough blood or oxygen because of an obstruction

What would explain the results of the erythrocyte sedimentation rate for the patient with sickle cell anemia?

The shape of the red blood cells prevented them from settling.

Which of the following does NOT result in an increase in hemoglobin levels?
living at high altitudes
congestive heart failure
hyperthyroidism
polycythemia

hyperthyroidism

Oxyhemoglobin _______.
has a dull, brick-red color and has oxygen attached to the polypeptide chain of hemoglobin
has oxygen attached to the polypeptide chain of hemoglobin
has a dull, brick-red color and has oxygen attached to the iron atom
has a dull, brick-red color
has oxygen attached to the iron atom

has oxygen attached to the iron atom

Describe hemoglobin and hematocrit values for the female with iron-deficiency anemia.

The hemoglobin was below normal, and the hematocrit was normal.

PCV

Packed cell volume

Hb

hemoglobin

Which of the following individuals had the highest hemoglobin level?
the healthy male
the healthy female
the female Olympic athlete
the male with polycythemia

the gemale Olympic athlete

Which test measures hemoglobin concentration in the blood?

hemoglobinometer determination

neutrophil (describe)

most abundant, cell body stains a neutral pink

eosinophil

cell body stains dark red

basophil

least common, stained by basic dyes, appear spotty

lymphocyte

large dark nucleus, divided into small and large lymphocytes

monocyte

large kidney shaped nucleus, largest white blood cell

Which of the following white blood cells are granulocytes?
lymphocytes and monocytes
eosinophils and monocytes
neutrophils and lymphocytes
basophils and neutrophils

basophils and neutrophils

Leukopenia may indicate ________.

a disease such as cirrhosis of the liver or tuberculosis

These white blood cells kill parasitic worms and play a complex role in allergic responses and asthma.

eosinophils

Describe the pressures in the atria and ventricles that would cause the opening of the AV valves.

Pressure in the atria would be greater than the pressure in the ventricles.

What causes the aortic semilunar valve to close?

greater pressure in the aorta than in the left ventricle

The majority of ventricular filling occurs while the ventricles and atria are in what state(s)?

diastole

The decrease in left ventricular pressure at the end of ventricular systole causes __________.

the semilunar valve to close

Ventricular diastole begins with the closing of the semilunar valves. What phase of the cardiac cycle happens between this event and the later opening of the AV valves?

isovolumetric relaxation

Which of the following would increase heart rate?
epinephrine and norepinephrine
decreased activity of the sympathetic nervous system
increased activity of the parasympathetic nervous system
acetylcholine

epinephrine and norepinephrine

How would an increase in the sympathetic nervous system increase stroke volume?

increased contractility

How would a decrease in blood volume affect both stroke volume and cardiac output?

decreased stroke volume and no change in cardiac output

The net hydrostatic pressure (HP) is the hydrostatic pressure in the __________ minus hydrostatic pressure in the __________.

capillary; interstitial fluid

Stimulation of the adrenal medulla would result in which of the following?
an increase in heart rate and contractility
a decrease in cardiac output
vasodilation of arteries
a decrease in blood pressure

an increase in heart rate and contractility

A decrease in blood pressure at the arterial baroreceptors would result in which of the following?
a decrease in heart rate
a decrease in cardiac output
an increase in heart contractility
vasodilation of arterioles

an increase in heart contractility

Which of the following has the greatest effect on peripheral resistance?
viscosity
blood vessel length
viscosity, blood vessel length and blood vessel diameter affect peripheral resistance equally
blood vessel diameter

blood vessel diameter

Arteries that are closer to the heart _______.

have more elastic tissue and must be able to withstand pressure changes

Blood flow is _______.

directly proportional to the pressure gradient

Cardiac output is _______.
equal to blood flow and equal to heart rate times stroke volume
equal to heart rate times (EDV minus ESV)
equal to blood flow
equal to heart rate times stroke volume
All of the above.

All of the above.

The volume in the pump when the pump piston is all the way down represents the _______.

end systolic volume

The overlap length of cardiac muscle in the healthy heart is _______.

less than optimum for maximum tension production

Afterload is the pressure threshold that must be exceeded to open _______.

the aortic semilunar valve and the pulmonary semilunar valve

An increased preload is equivalent to, or causes, a(n) _______.

increased EDV

Blood flowing in the vena cava will next enter the __________.

right atrium

the heart beat approx. ___ times a day

100,000

Blood leaves the right ventricle by passing through the

pulmonary valve.

Blood leaves the right ventricle by passing through the

pulmonary valve.

The right atrium receives blood from the

systemic circuit.

Blood flowing into the heart from the venae cavae flows next through the ________ valve.

tricuspid

Coronary veins empty into the

right atrium.

There are ________ pulmonary veins.

4

The ________ deliver(s) blood to the myocardium.

coronary arteries

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