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Which of the following are places where nutrients and wastes are exchanged between the blood and the interstitial fluid of the tissues?
Capillaries
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Auricles are part of the:
Atria
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The function of the chordae tendineae is to
keep the valves between the atria and ventricles closed at the right time
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Which of the chambers of the heart has the thickest wall?
Left Ventricle
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Which of the following has the structures listed in the order that blood could pass through them on a trip from the fight atrium back to the right atrium?
Right Ventricle, pulmonary vein, bicuspid valve, aorta
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How many flaps does each semilunar valve have?
3
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In the fetus, the ductus arteriosus provides a passageway between the
aorta and pulmonary artery
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What vein is formed by the union of the superior mesenteric vein and the splenic vein?
Hepatic portal vein
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Capillaries have a diameter that lets how many red blood cells through at a time?
1
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Chordae tendineae are attached to
atrioventricular valves and papillary muscles
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The coronary arteries are branches of the
ascending aorta
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In Vasodilation, _____________ of smooth muscle __________________ the size of the lumen.
relaxation, increases
In Vasodilation, __relaxation___________ of smooth muscle ____increases______________ the size of the lumen.
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A feature of arteries that helps maintain continuous flow is
elastic fibers in the walls
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The components of the ______ are the heart, blood vessels, and blood.
circulatory system
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In the adult, the pulmonary arteries carry
deoxygenated blood
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The scientific name for a blood pressure cuff is a
sphygmomanometer
sph-yg-mom-ano-meter
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If someone has a blood pressure of 120/80, then 80 is the _________ blood pressure and indicates the pressure when the ventricle ________
- If someone has a blood pressure of 120/80, then 80 is the __diastolic_______
- blood pressure and indicates the pressure when the ventricle _relaxes_______
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Resistance in the circulatory system is primarily the result of friction between
The blood and the blood vessel walls
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The hepatic portal vein is a portal vein because it carries blood between
two capillary networks
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In people, the left brachiocephalic vein is formed by the junction of the left subclavian vein and the
left internal jugular vein
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The branch of the aorta that carries blood to the stomach, liver, and spleen is the
Celiac artery
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If someone has a blood pressure reading of 145/79, what would his/her mean blood pressure be?
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A vascular or venous sinus differes from a regular vein because it has no
muscle layer
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The volume of blood in an adult is approimately
5 liters
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What makes the semilunar valves close?
pressure of blood returning to the heart as it relaxes
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Smooth muscles in the metarterioles help control blood flow through the
capillaries
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Which of the following describes the velocity of the blood as it goes form the aorta through the capillaries and back to the heart?
Decreases and then increases
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When a blood vessel branches, the branches together have _____ the original vessel.
More cross-sectional area than
When a blood vessel branches, the branches together have _More cross-sectional area than____ the original vessel.
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Connetions between blood vessels that provide alternate routes are called
anastomoses
an-ast-omo-ses
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List one factor discussed in class that will increase the resistance in the circulatory system.
- Longer vessel length
- Smaller vessel radius
- Higher blood viscosity
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Capillaries are composed of endothermic and what other layer.
basement membrane
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The muscle layer of the heart wall is called the
myocardium
my-o-card-ium
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State Henry's Law.
The quantity of a gas that will dissolve in a liquid is proportional to the partial pressure of the gas and the solubility coefficient of the gas.
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State Boyle's Law
The volume of a gas varies inversely with its pressure.
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The pressure of air between the lining of the chest wall, the parietal pleura and the lining that covers the lungs, visceral pleura
Intrapleural pressure
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When does Inspiration occur?
Inspiration occurs when alveolar pressure is below atmospheric pressure, aka an inhalation
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What occurs when alveolar pressure is above atmospheric pressure
Expiration occurs when alveolar pressure is above atmospheric pressure
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The amount of air moved in and out with normal breathing.
Tidal Volume
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Tidal Volume is usually about __ mL in adults
500 mL
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The additional air that can be inhaled with a deep breath
Inspiratory reserve volume
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Inspiratory reserve volume is about ___ mL in adults
3100 mL
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The additional air that can be forced out
Expiratory reserve volume
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Expiratory reserve volume is about __ mL in adults
1200 mL
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The amount of air that remains in the lungs after a forced expiration
Residual Volume
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Residual volume is about __ mL in adults
1200 mL
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Vital Capacity is:
The sum of:
- Tidal Volume
- Inspiratory Reserve Volume
- Expiratory Reserve Volume
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The total lung capacity
- Total of
- Tidal Volume
- Inspiratory Reserve Volume
- Expiratory Reserve Volume
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pO2 + pCO2 + pN2 + pH20 = atmospheric pressure
What is atmospheric pressure in mmHg?
1 atm = 760 mm Hg
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