HOW MANY PULMONARY ARTERIES EMPTY INTO THE RIGHT ATRIUM OF THE HEART
NONE
AT ANY GIVEN MOMENT MOST OF THE BODY'S BLOOD IS IN
THE VEINS
VEINS ARE CALLED_____________________BECAUSE THEY CAN HOLD A LARGE AMOUNT OF BLOOD
CAPACITANCE
BLOOD FLOW IS DIRECTLY PROPORTIONAL TO
BLOOD VISCOSITY
HYPOVOLEMIC SHOCK CAN BE CAUSED BY
PROFUSE SWEATING
THE LAST BRANCH OFF THE AORTIC ARCH IS
THE LEFT SUBCLAVIAN ARTERY
WHICH OF THE FOLLOWING VEINS DOES NOT OCCUR IN THE UPPER EXTREMITY
SMALL SAPHENOUS VEIN
BLOOD IN THE RADIAL ARTERY COMES FROM WHAT BLOOD VESSELS
BRACIAL ARTERY
THE INTERNAL CAROTID ARTERY TAKES BLOOD TO WHAT ORGAN
THE INTERNAL CAROTID ARTERY TAKES BLOOD TO WHAT ORGAN
WHAT ARTERY TAKES BLOOD DIRECTLY TO THE FEMORAL ARTERY
External iliac artery
THE FASTEST RATE OF AUTORHYTHMICITY IS NORMALLY CARRIED OUT BY
SA NODE
THE ELECTROCARDIOGRAM IS MOST USEFUL IN DETERMINING WHICH COMPONENT OF CARDIAC OUTPUT
HEART RATE
Q = Stroke Volume × Heart rate
Q = SV × HR
...
THE VOLUME OF BLOD EJECTED FROM EACH VENTRICLE DURING A CONTRACTION IS CALLED THE
STOKE VOLUME
EACH OF THE FOLLOWING FACTORS WILL INCREASE CARDIAC OUTPUT EXCEPT ONE
Increased parasympathetic stimulation
During the normal cardiac cycle, the ventricles contract when they are directly stimulated by
the
Purkinje fibers
Chordae tendineae function to:
Prevent movement of the AV valve cusps into the atria during ventricular systole
Which statement below concerning the coronary circulation is true?
The great cardiac vein lies alongside the anterior interventricular artery.
Blood in pulmonary arteries carry
deoxygenated blood from the pulmonary trunk to the lungs.
The atria contract during the
P-Q segment
Place these structures in the order that blood returning to the heart from the lungs would pass through them.
1. right ventricle 6. right atrium
2. bicuspid valve 7. left ventricle
3. left atrium 8. tricuspid valve
4. pulmonary semilunar valve 9. aorta
5. aortic semilunar valve 10. pulmonary trunk
3, 2, 7, 5, 9, 6, 8, 1, 4, 10
_________ occurs in ventricular systole before the semilunar valves open
Isovolumentric contraction
Atrial diastole and the ventricular ejection phase of ventricular systole occur at the same time. Please circle the number of which events below that are occurring in the heart at this time?
ventricular ejection of blood into great arteries
venous pressure > atrial pressure = venous return
ventricular pressure > atrial pressure = AV close
atria fill with blood, so atrial pressure increases
atria fill with blood, so atrial pressure increases
If a person’s EDV is 140 mL, the ESV is 55 mL, and the ejection fraction is 0.61, then the stroke volume must be about
85 mL
In order for blood to enter the heart
Venous blood returns to the atria
The AV valves are open.
The cardiac cycle may be in its quiescent period.
Which of the following statements concerning the functional characteristics of the chambers of
the heart is true?
Most ventricular filling occurs before the atria contract
The AV node is important because it:
Directs electrical impulses from the atria to the ventricles.
Delays the transmission of electrical impulses to the ventricles to allow the atria
Resistance increses when
Decreases with increasing blood vessel length
Decreases if blood vessel diameter is reduced by 50%
Decreases in cases of polycythemia
Is not a major factor in the determination of mean arterial pressure
2 of the above are correct
None of the above correct ITS NONE OF THE ABOVE
The arteries that directly feed into the capillary beds are called
Arterioles
A deficiency of albumin would result in
Loss of water by osmosis from the bloodstream
As blood flows from the aorta to the capillaries of the gastrocnemius, its velocity of flow will:
Decrease
Increasing blood vessel length will cause peripheral resistance to
Increase
As you go from arteries to capillaries, the fluid pressure exerted by blood on the vessel walls
Decreases
If MAP increased by 10mmHg, how much must the diastolic pressure have changed
Cannot be determined from the information given
As heart rate decreases, diastolic pressure will
Decrease
The volume of blood moving through a given area in a given time is the:
Blood flow
If MAP=100mmHg, and SBP=120, then what must DBP be
90mmHg
Permitting the exchange of gases and nutrients between blood and tissue cells is the primary function of what blood vessel type
CAPILLIARIES
65% of the blood volume is contained within the
VEINS
The femoral artery is an example of a(n) ____________ artery
MUSCULAR
Arrange the following in the proper order for blood flow
Elastic arteries
Muscular arteries
Arterioles
Histologically, the tunica _________ is squamous epithelium underlain by a sparse connective tissue layer
INTERNA
Sinusoidal capillaries are found in the
Bone marrow
As you go from arteries to capillaries, the fluid pressure exerted by blood on the vessel walls
Decreases
As right atrial diastolic pressure increases, VR _______.
DECEASES
Which statement is true of arteries?
LACK VALVES
As cardiovascular shock progresses, sympathetic nervous system output _______.
DECREASES
As venous BP increases, tissue edema
INCREASES
As blood flows from the arteries into capillaries, velocity of flow
DECREASES
As sympathetic stimulation increases, peripheral resistance
INCREASES
As plasma histamine increases, venous return
DECREASES
As plasma ANP increases, blood volume
DECREASES
Large diameter capillaries found primarily in the liver, spleen, and bone marrow are called
Sinusoidal capillaries
Which of the following represents the primary kind of tissue found in the tunica media of blood vessels
Concentric layers of smooth muscle
The tunica interna
Includes a layer of simple squamous epithelium
The difference between the systolic and the diastolic pressures is known as the:
Pulse Pressure
patient with a hypothalamic tumor has hypersecretion of ADH. Which of the following BP readings would be most likely for this patient
165/100
As blood travels from the aorta to the capillaries
Resistance Increases
The blood vessels that play the most important role in the regulation of blood flow to a tissue and blood pressure are the:
Arterioles
When compared to arteries, veins generally
Are thinner walled
Each of the following statements about sinusoidal capillaries is correct EXCEPT
They are the least permeable capillary type
The basic tissue types found in large blood vessels include
Muscle
Connective Tissue
Nerve
Epithelium
The thickest layer of the wall of veins is the
Tunica externa
Which of the following arteries branches off the aorta first
Left coronary
A brief increase in blood pressure will cause the sympathetic tone on the blood vessels to
DECREASES
Baroreceptors project to the
Vasomotor, Cardioinhibitory, and Cardioacceleratory centers
Vasomotor, Cardioinhibitory, and Cardioacceleratory centers
INCREASES
ANP causes Na+ excretion in the urine to ____________ which causes blood volume to _____________.
Look here for the answerIncrease - Decrease
INCREASES AND DECREASES
Nitric Oxide is a:
Powerful vasodilator
Consider the following events and then put them in correct chronological order.
Sustained blood pressure depression
Release of aldosterone
Conversion of angiotensin I to angiotensin II
Release of renin
Cleavage of angiotensinogen
1,4,5,3,2
As you move from the arterial end of a capillary bed to the venous end, the capillary hydrostatic pressure will _______________.
DECREASES
Liver dysfunction would cause capillary osmotic pressure to ___________.
DECREASED
Dehydration causes capillary osmotic pressure to _____________.
INCREASED
The most common type of shock is: _____________.
Hypovolemic
Which of the following arteries is not paired
Inferior mesenteric
Which of the following veins does not drain into the inferior vena cava?
Subclavian
Blood in the hepatic portal vein tends to be high in ______________ and low in ______________.
NUTRIENTS/OXYGEN
Oxygenated blood is brought to the liver by the
HEPATIC ARTERY
A transient decrease in BP is detected by baroreceptors which respond by activating the __________________ center and the ___________________ center and inhibiting the __________________ center.
CARDIOACCELERATORY;VASOMOTOR;CARDIO INHIBITORY
The primary baroreceptors are found in the:
Carotid sinus
Aortic arch
At rest, the % of cardiac output received by the kidneys is greater than the % received by the heart
This statement is TRUE
An increase in tissue [lactic acid] will cause the arterioles feeding that tissue to
Dilate
Epinephrine causes the blood vessels serving skeletal musculature to:
Dilate
If the [O2] in the capillaries is less than the [O2] in the interstitial space, then the direction of O2 diffusion will be from the ________________ into the ________________.
INTERSTITAL SPACE; CAPILLARIES
Rank the following forces in order of magnitude.
HPCAPILLARY at the arterial end
HPINTERSTITIAL SPACE
HPCAPILLARY at the venous end
HPCAPILLARY at the arterial end
HPCAPILLARY at the venous end
HPINTERSTITIAL SPACE
Pulmonary arteries are like veins because they have thick walls and small lumens
This statement is FALSE
The intrinsic autoregulation of blood pressure is
Metabolic
Myogenic
Not suited to respond to long term changes in BP
Vascular smooth muscle responds to stretch by:
Contracting
If a segment of pulmonary tissue has a low [O2], then the arterioles serving that segment will:
Constrict
The blood-brain barrier protects the brain tissue from being affected by:
Decreases in plasma pH
These are the given values:
30 year old non pregnant female, 5'4", 134 lbs.
Resting state - NOT scared of being at Dr. office
Heart rate = 70 bpm
Stroke volume = 80 mL
Diastolic Pressure = 100 mmHg
Peripheral resistance = 20
With all this information, I need to find:
Cardiac output,
Mean arterial pressure,
Pulse pressure,
Systolic pressure,
and What is her blood pressure, and should she be concerned
Cardiac output = heart rate x stroke volume
= 5.6 L/min
Mean arterial pressure = cardiac output x peripheral resistance
= 5.6 x 20 = 112mmHg
Mean arterial pressure = Diastolic pressure + 1/3 (Systolic - Diastolic pressure)
112 = 100 + 1/3 (Systolic pressure - 100)
12 = 1/3 (sys -100)
12 + 100/3 = sys / 3
136 mmHg = Systolic pressure
Pulse pressure = Systolic - diastolic pressure
= 36 mmHg
Recomened normal BP is less than 140/90
THE COMPOSITION OF LYMPH IS THE MOST SIMILAR TO
interstitial fluid
THE THORACIC DUCT EMPTIES LYMPH INTO THE
left subclavian vein
Which of the following correctly lists the structures according to the sequence of fluid flow?
blood capillaries, interstitial spaces, lymphatic capillaries, lymphatic vessels, lymphatic ducts, subclavian veins
One known function of the cells of the thymus is to
produce and secrete thymic hormones
The structure of a lymphatic vessel is most similar to that of
VEIN
The two collecting ducts that drain the lymphatic trunks are the
thoracic duct and right lymphatic duct
The formation of lymph increases as a result of
increasing osmotic pressure in tissue fluid
Lymph differs from plasma in that
plasma contains more protein than lymph
If lymphatic tissue is removed from an axillary region, the arm on that side is likely to
become edematous
Tissue fluid is _____ and lymph is _______.
forced out of blood plasma and generally lacking in proteins; absorbed into lymph capillaries and rich in proteins and foreign particles
The structure of a lymph node can be described as
being divided into compartments that contain masses of lymphocytes and macrophages
afferent vessels circulating lymph into the node on its convex surface
efferent vessels circulating lymph out of the node at its hilus
Which of the following is not a function of the spleen?
site of stem cell maturation into T and B cells
The ability of T-lymphocytes to recognize self from non-self antigens is developed in the
thymus
Which person most likely has the largest thymus gland
TWO YEAR OLD`
The spleen is much like a lymph node except that the spleen
filters blood
Which of the following is not a function of lymph nodes?
production of plasma proteins
People that are confined to bed for long periods of time often develop edema because
without skeletal muscle contraction to force lymph through lymphatic vessels, fluid tends to accumulate in the interstitial spaces
Foreign particles that are injected into the skin are likely to enter the lymphatic system
rapidly
The functions of the lymphatic system do not include
transporting hormones to intestinal smooth muscle
A lysozyme is
an enzyme found in body fluids that flow over epithelial surfaces to destroy certain bacteria
Which of the following is a nonspecific mechanism of resistance
activation of the complement via the alternative pathway
Which of the following would most likely increase a person's risk of invasion by pathogenic microbes?
loss of epidermal tissue
The cells that are primarily responsible for immunity are
lymphocytes and macrophages
Which of the following is an example of a specific body defense mechanism
antibody production
Antibodies are
gamma globulin proteins
T-cells and B-cells are
ymphocytes
In an autoimmune disease, the immune response is directed toward
self-antigens
Following a primary immune response, plasma cells give rise to
memory cells
T-lymphocytes are responsible for
cell-mediated immunity
B-cells proliferate and differentiate into plasma cells in the
lymph nodes