Extra
The superior vena cava is an example of a large vein that includes smooth muscle circularly and longitudinally arranged in the tunica media and externa, respectively.
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This fluid delivers materials to the cells and removes its waste.
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This is the physical force exerted by a liquid against a surface like a capillary wall.
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This shift in fluid balance at the arterial end is referred to as hydrostatic pressure.
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Typically, fluid filters out the arterial end of a capillary.
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Which blood type is the Universal Recipient?
AB+
Capillaries
Allow gaseous exchange
Which part of the lung does gas exchange occur in?
Alveoli
Large artery that brings oxygen rich blood to the body
Aorta
Name of this structure
Aorta
Where does blood flow after entering the left ventricle
Aorta
This valve leads to the Aorta
Aortic
Capillaries
Are the smallest blood vessel
During exercise, the adrenal medulla and sympathetic nerves cause which of the following to occur?
Arterioles dilate in response to epinephrine and norepinephrine.
The green represents...
Atria Contracting
Which is a true statement?
Atria contract 0.1 sec before ventricles
Which substances leave the blood by diffusing directly through the plasma membrane of endothelial cells? Check all that apply.
Glucose Large proteins Glucose
Arteries
Have elastic walls
Where is the first place oxygenated blood goes?
Heart
This valve leads to the pulmonary artery
Pulmonary
Circulation that goes from the heart to the lungs is called?
Pulmonary Circulation
Vein that brings oxygen rich blood back from the lungs
Pulmonary Vein
The atria 'repolarize' (open) during the...
QRS Complex
The Red Portion of the red represents the ____ wave.
R-wave
Edema may be caused by which of the following? Check all that apply.
Reduced capillary reabsorption Hyperproteinemia (increased levels of protein in the blood)
Which side of the heart has oxygen poor blood?
Right
Which node would be considered the 'pace maker' of the heart?
SA node
Which node 'begins' the muscle contraction?
SA node Sinoatrial Node
Which type of muscle is found in blood vessels?
Smooth
Circulation that goes from the heart to the body
Systemic Circulation
Where does blood go after entering the vena cava?
The Lungs
Circulation delivering nutrients like carbohydrates, fats, and proteins into the bloodstream?
hepatic portal
lymph nodes are heavily concentrated in what area?
inguinal
Which organ is mainly responsible for filtering blood before taking nutrients to tissue cells
liver
Artery that brings oxygen poor blood to the lungs
pulmonary artery
where are the peyer patches found?
small intestine
what is the largest lymphatic organ?
spleen
Veins have semi lunar valves to maintain the flow of blood
True
When a person is still, blood accumulates in the limbs because venous pressure is not high enough to override the weight of the blood and drive it upward.
True
What prevents blood from going backwards/pooling in the heart?
Valves
Large vein that brings oxygen poor blood to heart
Vena Cava
The blue represents..
Ventricles relaxing
Diastolic pressure is the minimum arterial blood pressure occurring during which of the following?
Ventricular relaxation
Which of the following does not aid in venous return?
Venule suction
After exiting the capillary, venules contain no muscle and are the first vessel that blood enters on its way back to the heart.
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Fluid will then osmotically reenter at the venous end
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Just prior to entering capillary beds, arterioles have become extremely thin and present only a few layers of smooth muscle.
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The aorta is the first vessel blood enters upon exiting the heart.
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The large (elastic) arteries expand and recoil with every heart beat due to a histologically dominant network of elastic tissue in the tunica media.
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The medium veins contain abundant but irregularly spaced smooth muscle with frequent valves present in the tunica interna.
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The site of gaseous exchange, or capillaries, are characterized by extremely thin walls with only endothelium and basal lamina, which better suits diffusional requirements.
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Approximately what percent of fluid that exits the capillaries at the arterial end reenters the capillaries at the venous end?
90%
Which term refers to the feedback response to blood pressure changes?
Baroreflex
This valve separates the left atrium and left ventricle
Bicuspid
Where does oxygen go after it reaches the alveoli
Blood Capillaries
Which of the following is not detected by chemoreceptors in the carotid and aortic bodies?
Blood pressure
Why does exercise increase venous return?
Blood vessels of the skeletal muscles, lungs, and coronary circulation dilate, increasing flow.
Arterioles
Branch and lead to Capilleries
Blood vessels with a single cell walls are known as
Capillaries
What gas passes from the blood into the alveoli?
Carbon Dioxide
Where are baroreceptors found?
Carotid sinuses
Venules
Carry De-oxygenated blood
Arteries
Carry blood away from the heart
Veins
Carry blood towards the heart
Choose the accurate statements regarding the effects of edema. Check all that apply.
Even severe edema does not cause blood volume and pressure to drop low enough to cause circulatory shock. As the tissues become congested with fluid, oxygen delivery and waste removal are improved.
Exchange of gases between the alveoli and the bloodstream
External Respiration
What two independent processes are involved in gas exchange?
External and Internal Respiration
Which of the following is not a process that is essential for the transfer of oxygen?
Facilitated Diffusion
Heart rate and stroke volume decrease with a decrease in parasympathetic stimulation.
False
Increased sympathetic stimulation causes vasodilation, bringing elevated blood pressure back to normal.
False
Which of the following will not increase the heart rate?
Increased blood pressure
The exchange of gases between capillaries and the body and body cells is...?
Internal Respiration
Which side of the heart has oxygen rich blood?
Left
Which of the following contains chemoreceptors?
Medulla oblongata
Which of the following occur during a period of exercise? Check all that apply.
Metabolite accumulation in a tissue can stimulate local vasoconstriction. The parasympathetic nervous system can selectively reduce blood flow to the kidneys and digestive tract.
How is increased muscle perfusion during exercise accomplished? Check all that apply.
Muscular contraction compresses the blood vessels. Precapillary sphincters constrict in response to muscle metabolites such as lactic acid, CO2, and adenosine. Blood is diverted from other organs such as the digestive tract and kidneys to meet the needs of the working muscles.
Which blood type is the Universal Donor?
O-
The Green peak represents...
P-wave
The amount of pressure each gas creates is called...?
Partial Pressure
Capillaries have
Permeable walls
what cell produces antibodies?
Plasma Cells
which is not a cell mediated immunity?
Plasma Cells
Both internal and external respiration rely on the establishment of...?
Pressure Gradient
The left bundle needs two main branches because...
The left ventricle has more muscle to contract
Why do fluids leave the capillaries at the arterial end?
The net filtration pressure of the blood is higher at the arterial end than it is at the venous end.
Arteries have...
Thick muscular wall
Veins have
Thiner walls than arteries
What is(are) the physiological purposes of vasoreflexes?
To cause a generalized raising or lowering of blood pressure throughout the body and to selectively modify the perfusion of a particular organ by rerouting blood from one region of the body to another
Capillaries
Transport blood from the arteries to the vein
This valve separates the right atrium and right ventricle
Triscuspid
Arterioles have thinner walls than arteries?
True
Increased sympathetic stimulation causes increased heart rate and stroke volume.
True
Pulmonary Vein is the ONLY vein that lets oxygenated blood flow back to the left atrium.
True
The Pulmonary Artery carries de-oxygenated blood from the heart to the lungs?
True
Which of the following blood vessel has the thickest, strongest, most elastic walls?
arteries
When ________ that surround the veins contract, they "milk" or push the blood toward the heart.
muscles
getting the flu is an example of what immunity?
naturally acquired active immunity
Blood usually passes through one network of capillaries from the time it leaves the heart until the time it returns, but there are exceptions, notably the __________.
portal systems and anastomoses
which of the following helps with movement of the lymphatic system?
pressure gradient all of the above one way valves skeletal muscle and respiratory pump
Which of the following is the innermost layer of a blood vessel?
tunica intima
The venous system can pump blood back to the heart because of its one way _________
valves
The three main types of blood vessels are arteries, capillaries, and _____.
veins
what portion of the spleen acts as a filter to debris, and worn out blood cells?
white pulp
