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Worksheetslecture 2 (only blood flow)
Total questions: 104
Worksheet time: 1hrs 23mins
Select the three types of blood vessels
arteries
veins
capallaries
venules
arterioles
Layers in blood vessels are referred to as (a)
The innermost layer of a blood vessel is called the ______________ ____________ (intima)
(a)
(a) is the weakening of an artery, which its wall can balloon out and burst
Select the types of tissues of the tunica interna
endothelium
simple squamous tissue
thin sub-endothelial layer of areolar connective tissue
smooth muscle
elastic fibers
What layer of blood vessels lines the lumen
(a)
This layer of blood vessels is composed of smooth muscle and blood fibers. It is also the thickest layer in the arteries
(a)
The __________ _______________ is a blood vessel layer that serves for controlling blood pressure and flow
(a)
(a) is the decrease the size of lumen for arteries
(a) is the increase of size of lumen for veins
The constricting and dilating of blood vessels is because of what layer?
(a)
The tunica media is innervated with _______________ _____________ neurons which release norepinephrine
(a)
More norepinephrine in the tunica media causes more ____________
constriction of blood vessels
dilation of blood vessels
The tunica externa (or adventia) is made of what tissues
areolar connective tissue
elastic fibers
collagen fibers
smooth muscle
endothelium
Select the function of the tunica externa
stabilizes and anchors blood vessels
controls pressure and flow in blood vessels
release substances
Do arteries typically carry oxygenated or deoxygenated blood
oxygenated
deoxygenated
Capillaries permeate almost all body tissues except...
sclera of eyes
epithelial tissue
cartilage
dermis of skin
(a) veins are veins losing its shape due to not being in muscle and standing for a long period of time
Select the types of capillaries
continuous
fenestrated
sinusoidal
terminal
The ____________ ____________ is the only exception to arteries carrying oxygenated blood
(a)
The ____________ ___________ is the most prominent layer in arteries
(a)
Veins usually carry deoxygenated blood, except in the (a)
Select the three major type of arteries
elastic
muscular
arterioles
metarterioles
Valves in veins prevent the (a) of blood
(a) are smaller veins that do not have valves
The most prominent layer in veins is the _____________ ___________
(a)
When arteries and veins are right next to each other, they are known as ______________ ______________
(a)
Which has the greater lumen diameter
arteries
veins
(a) exchange substances between blood and tissues
True or false? The only layer in capallaries is the tunica interna
true
false (it is externa)
(a) is the red blood cells scraping the walls of blood vessel
____________ _______________ is typically used when referring to the resistance of blood in the blood vessels than in the heart
(a)
more constriction would cause what?
more resistance
more viscosity
more blood flow
slower blood flow
less resistance
Chad is running to store. What is occuring?
an increase in resistance of the appendage muscles' arteriole
an increase in resistance of the abdominal muscles' blood vessels
a decrease in resistance of the appendage muscles' arteriole
a decrease in resistance of the abdominal muscles' blood vessels
Factors of resistance is...
viscosity
blood flow
friction
Vessel Length
Vessel Diameter
Uh oh! Chad is trying to strengthen his muscles for his track even by blood doping. What is occurring by doing this?
Increase in viscosity
EPO increase from kidneys
more red blood cells
more resistance
less resistance
Pressure is highest in what type of arteries?
Elastic arteries
Muscular arteries
arterioles
What type of artery would result in a drop of blood pressure?
arterioles
muscular arteries
elastic arteries
This vein has the lowest pressure: (a)
Capillaries blood pressure begins at 35 mmHg and ends at (a) mmHg
Why do capillaries have a low blood pressure
for exchange between arterioles and capillaries (arterioles cannot handle high pressure
they do not (have high pressure)
True or false? Veins have the lowest blood pressure
true
false
Veins blood pressure ranges from 15mmHg to (a) mmHg
Veins pressure can cause peripheral resistance but problems with the ____________ __________.
(a)
Select the responsibilities of the venous return
respiratory pump
skeletal pump
venoconstriction
venodilation
the _________ ___________ ____________ is the most important responsibility in venous return
(a)
The _____________ __________ causes pressure changes during breathing which moves blood toward the heart
(a)
An increase of blood viscosity would cause (a) blood resistance
If there is more constriction and resistance, there would be a _____ blood flow
slower
faster
True or false? An increase in blood viscosity is healthy.
True
False
Total vessel length is ________ proportional to resistance
directly
indirectly
Would a smaller diameter mean more or less resistance?
more
less
Is a change in vessel diameter is normal in healthy people?
true
false
What is the arterial blood pressure?
120/80 mmHg
35/15 mmHg
15/0 mmHg
What types of vessel has the highest blood pressure
elastic arteries
muscular arteries
arterioles
veins
capallaries
What type of artery would have a drop in blood pressure?
Muscular
Elastic
Arterioles
What is capillaries' blood pressure
35 mmHg to 15 mmHg
120 mmHg to 80 mmHg
15 mmHg to 0 mmHg
Why are is the capillary blood pressure so low?
Because the arterioles connect to capillaries (cannot withstand high pressure)
Because the veins connect to the capillaries
For the resorption of osmotic pressure in the venous end when blood enters slowly
because of peripheral resistance
what is venous blood pressure
15 mmHg to 0 mmHg
2 to 0 mmHg
35 to 15 mmHg
What is the blood pressure for veins when entering the vena cava
2 to 0 mmHg
15 to 0 mmHg
120 to 80 mmHg
Why do veins have a low blood pressure
Because of peripheral resistance
because capillaries are connected to it
for exchange
Because of its slow blood flow, veins have valves and (a) to help with venous return
Select the responsibilities of the venous return
respiratory pump
skeletal pump
venoconstriction
vasoconstriction
The _________ ___________ _________, is the most important responsibility of the venous return. Cardio exercise could cause more venous return
(a)
Elastic arteries are also known as (a) vessels. They have the highest pressure
_____________ __________ have the lympathic capillaries and distributing vessels. They go into tissues
(a)
Arterioles are known as __________ vessels
resistance
distributing
conducting
Select the correct stages to arterioles to the venous system
Terminal arterioles, metarterioles, precapillary sphincter, capillaries
Terminal arterioles, precapillary sphincter, metarterioles, capillaries
The venous system includes...
capillaries
postcapillary venule
small veins
large veins
precapillary sphincter
Capillaries are known as (a) vessels
Select the correct order of the venous syste,
capillaries (exchange vessels)
postcapillary venule
small veins
large veins
postcapillary venule
capillaries (exchange vessels)
small veins
large veins
capillaries (exchange vessels)
postcapillary venule
large veins
small veins
Select traits of elastic arteries
thick walled
large lumen
low resistance
high resistance
expand and recoil (act as auxiliary pumps)
Select examples of elastic arteries
aorta
brachiocephalic artery
carotid arteries
subclavian arteries
brachial arteries
Arterial blood pressure factors include
elastic arteries close to the heart level of stretch
volume
arteries diameter
blood viscocity
Muscular arteries delivering blood to specific body organs is called ____________ _________________
(a)
When ventricles are relaxed, arteries are still ______________ causing blood flow to be continous
constricting
dilating
(a) arteries have the thickest tunica media
Muscular arteries are more active in...
vasodilation
vasoconstriction
venodilation
venoconstriction
The smallest arteries are the (a)
What layer do arterioles sometimes not have
tunica interna
tunica externa
tunica media
What regulates the constant contracting of arterioles
metabolites
hormones
vasomotor neurons
medulla oblongata
What can cause arterioles to constrict
low temperatures
high temperatures
high plasmic volume
Capillaries only have the layer: ________ __________
(a)
The most common (found in the skin and muscles) and least permeable capillaries are the ___________ ____________.
(a)
Select what the continuous capillaries have...
endothelial holes
intercellular celfts
tight junctions
The intercellular clefts in continuous capillaries can fit...
small solutes
fluids
hormones
cells
___________ ___________ have endothelial holes, which allow hormones to go in.
(a)
here are fenestrated capillaries only found in
small intestines
kidneys
endocrine system
CSF
An exception to the composition of the continuous capillaries would be the ___________ _________ barrier.
(a)
The most permeable and least common capillaries are the (a) capillaries. They have big endothelial holes
Where are sinusoidal capillaries found?
bone marrow
adrenal medulla
spleen
liver
Capillaries form an interweaving network called ____________ _________
(a)
Select the correct blood flow(s) through capillary beds
Terminal arteriole -> metarteriole -> thoroughfare channel -> postcapillary venule
Terminal arteriole -> true capillaries -> post capillary venule
Terminal arteriole -> post capillary venule -> true capillaries
The ____________ ________ includes metarteriole + thoroughfare
(a)
Becky is eating pizza. What type of microcirculation would her small intestines be doing?
Terminal arteriole -> metarteriole -> thoroughfare channel -> postcapillary venule
Terminal arteriole -> true capillaries -> post capillary venule
(a) collect blood from capillary beds
Veins are also called capacitance vessels/blood reservoirs because ___% of blood supply is found in the,
65
55
45
35
Do veins have low or high resistance?
low
high
veins' smooth muscle tone prevent too much (a)
Blood flow = (a) per time
Blood flow is directly proportional to pressure gradient but inversely proportional to (a)
what controls blood pressure
vasomotor neurons
cardioinhibitory center
cardioacceleratory center
frontal lobe
The change in arterial pressure caused by ventricular systole is ___________ ______________
(a)
_____________ is the clogging of arteries with fatty deposits
Atherosclerosis
Aneurysm
