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BIO255
BIO 255 EXAM 2 QUESTIONS WITH VERIFIED ANSWERS,
ALREADY PASSED! (COMPLETE & ACCURATE)
1. Characteristics of Elastic arteries(Conducting arteries): -largest
arteries by diameter
-contain more elastic fibers than smooth muscle
-conduct blood from the heart to the more distant muscular arteries
-pressure reservoirs
2. Muscular arteries(distributing arteries): -Distribute blood to
various parts of the body
-Contain large amounts of smooth muscle,
-most named arteries in the body fall into this category
3. What special senses can the Arteries provide?: - Carotid
sinuses: Barorecptors, sensitive to pressure, found in the aortic
arch
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-Carotid bodies: Chemorecptors, sensitive to chemicals like O2 & PH,
found in the aortic bodies
4. Characteristics of Arterioles (resistance arteries): -smallest
arteries by diameter
-deliver blood to the capillaries, where gas and nutrient exchange can
occur -Control blood flow through systemic capillary
-Pre-capillary sphincter (chemoreceptor for oxygen)
-attached to capillary bed
5. Characteristics of Venules: -smallest veins
-collect blood from the capillaries
-contain venous valves which prevent the backward flow of blood
-attached to capillary bed
6. An example of a large vein is?: Inferior vena cava
7. Factors that contribute to (venous return):: -Vasoconstriction -
Valves
-Skeletal muscle pump
-Respiratory pump
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-Cardiac suction
8. Characteristics of Veins: -contain valves
-Carry blood back to heart-hold the most blood(blood reservoirs)-
-thinner tunica interna and media; thicker externa
9. Veins carry most of the bodies blood at ____%: 64
10. ***Describe the processes of filtration and reabsorption and
the different pressures involved at the capillary beds. What
happens when these processes are affected?: Filtration—
another method of capillary exchange—occurs close to the arterial
side of the capillary bed, whereas colloid osmotic pressure
operates toward the venous side.
1. Hydrostatic pressure: Blood enters through the arterial side and
creates a high pressure in the blood vessel, forcing fluid out into the
interstitial space (Filtration) 2. Interstitial pressure: As fluid keeps
coming into the interstitial space, blood pressure inside the capillary
drops and The lower pressure allows proteins in the blood, albumin, to
BIO255
BIO255
BIO 255 EXAM 2 QUESTIONS WITH VERIFIED ANSWERS,
ALREADY PASSED! (COMPLETE & ACCURATE)
1. Characteristics of Elastic arteries(Conducting arteries): -largest
arteries by diameter
-contain more elastic fibers than smooth muscle
-conduct blood from the heart to the more distant muscular arteries
-pressure reservoirs
2. Muscular arteries(distributing arteries): -Distribute blood to
various parts of the body
-Contain large amounts of smooth muscle,
-most named arteries in the body fall into this category
3. What special senses can the Arteries provide?: - Carotid
sinuses: Barorecptors, sensitive to pressure, found in the aortic
arch
BIO255
, 2
BIO255
-Carotid bodies: Chemorecptors, sensitive to chemicals like O2 & PH,
found in the aortic bodies
4. Characteristics of Arterioles (resistance arteries): -smallest
arteries by diameter
-deliver blood to the capillaries, where gas and nutrient exchange can
occur -Control blood flow through systemic capillary
-Pre-capillary sphincter (chemoreceptor for oxygen)
-attached to capillary bed
5. Characteristics of Venules: -smallest veins
-collect blood from the capillaries
-contain venous valves which prevent the backward flow of blood
-attached to capillary bed
6. An example of a large vein is?: Inferior vena cava
7. Factors that contribute to (venous return):: -Vasoconstriction -
Valves
-Skeletal muscle pump
-Respiratory pump
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, 3
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-Cardiac suction
8. Characteristics of Veins: -contain valves
-Carry blood back to heart-hold the most blood(blood reservoirs)-
-thinner tunica interna and media; thicker externa
9. Veins carry most of the bodies blood at ____%: 64
10. ***Describe the processes of filtration and reabsorption and
the different pressures involved at the capillary beds. What
happens when these processes are affected?: Filtration—
another method of capillary exchange—occurs close to the arterial
side of the capillary bed, whereas colloid osmotic pressure
operates toward the venous side.
1. Hydrostatic pressure: Blood enters through the arterial side and
creates a high pressure in the blood vessel, forcing fluid out into the
interstitial space (Filtration) 2. Interstitial pressure: As fluid keeps
coming into the interstitial space, blood pressure inside the capillary
drops and The lower pressure allows proteins in the blood, albumin, to
BIO255
