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1 - Blood Vessels

1 - Blood Vessels
42問 • 1年前
  • ava studios
    • 通報

    問題一覧

  • 1

    (Afferent) carry blood away from the heart

    arteries

  • 2

    Elastic; thick-walled, near heart (aorta + branches)

    arteries

  • 3

    Lumen has largest diameter of all of these

    arteries

  • 4

    High in elastin content; present in all 3 tunics

    arteries

  • 5

    Elastin content allows expansion and retraction in response to blood from heart (constant flow)

    arteries

  • 6

    Delivers blood to organs; most of arteries

    muscular arteries

  • 7

    Thickest tunic media of all vessels; intermediate lumen diameter

    muscular arteries

  • 8

    Most smooth muscle, less elastin in tunica media than elastic arteries

    muscular arteries

  • 9

    Better at vasoconstriction (moving blood)

    muscular arteries

  • 10

    Small arteries that regulate blood pressure; deliver blood to capillary beds within tissues

    arterioles

  • 11

    Lumen has smallest diameter of all arteries

    arterioles

  • 12

    Tunica media mostly smooth muscle; few elastin fibers

    arterioles

  • 13

    Play a major role in determining blood flow

    arterioles

  • 14

    Smallest of all blood vessels

    capillaries

  • 15

    Site of exchange between blood and tissues (nutrients, hormones)

    capillaries

  • 16

    Walls consist of only tunica interna

    capillaries

  • 17

    Pericytes (spider-shaped smooth muscle-like cells) stabilize capillary wall, control permeability, and are important in brain

    capillaries

  • 18

    Lumen diameter allows RBCs to travel through in single file

    capillaries

  • 19

    Types of capillaries

    continuous; fenestrated; sinusoidal

  • 20

    Occur in most tissues (abundant in skin and muscle)

    continuous

  • 21

    No breaks between endothelial cells

    continuous

  • 22

    Intercellular cleft: small gaps between tight junctions

    continuous

  • 23

    Pinocytotic vesicles shuttle materials through cell membrane

    continuous

  • 24

    Have (pores) covered by membrane

    fenestrated

  • 25

    Much more permeable to fluids and solutes than continuous capillaries

    fenestrated

  • 26

    Found often where capillaries need to absorb materials released by organs (endocrine system)

    fenestrated

  • 27

    Found often where filtrate formation occurs (e.g. kidneys)

    fenestrated

  • 28

    Leaky capillaries with large lumen and fenestrations

    sinusoidal

  • 29

    Fewer tight junctions; larger intercellular clefts

    sinusoidal

  • 30

    Large molecules allowed to pass

    sinusoidal

  • 31

    Found in liver, bone marrow, lymphoid tissues, and endocrine organs

    sinusoidal

  • 32

    Often have specialized macrophages (Kupffer cells)

    sinusoidal

  • 33

    Blood flow is slow

    sinusoidal

  • 34

    Result from convergence of capillaries

    venules

  • 35

    Endothelium

    venous system

  • 36

    Highly porous (fluid and white blood cells freely move across walls)

    venous system

  • 37

    Larger venules have smooth muscle layers (tunica media) and thin tunica externa

    venous system

  • 38

    Veins: result from convergence of venules

    venous system

  • 39

    3 tunics: walls thinner and lumens larger than arteries

    venous system

  • 40

    Very little smooth muscle in tunica media

    venous system

  • 41

    Thick tunica externa with thick collagen fibers and elastic fibers

    venous system

  • 42

    Blood pressure lower in veins but poses problems of getting blood back to heart (large lumens provide little resistance to blood flow) venous valves of the tunica intima, similar to semilunar valves of heart)

    venous system

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    問題一覧

  • 1

    (Afferent) carry blood away from the heart

    arteries

  • 2

    Elastic; thick-walled, near heart (aorta + branches)

    arteries

  • 3

    Lumen has largest diameter of all of these

    arteries

  • 4

    High in elastin content; present in all 3 tunics

    arteries

  • 5

    Elastin content allows expansion and retraction in response to blood from heart (constant flow)

    arteries

  • 6

    Delivers blood to organs; most of arteries

    muscular arteries

  • 7

    Thickest tunic media of all vessels; intermediate lumen diameter

    muscular arteries

  • 8

    Most smooth muscle, less elastin in tunica media than elastic arteries

    muscular arteries

  • 9

    Better at vasoconstriction (moving blood)

    muscular arteries

  • 10

    Small arteries that regulate blood pressure; deliver blood to capillary beds within tissues

    arterioles

  • 11

    Lumen has smallest diameter of all arteries

    arterioles

  • 12

    Tunica media mostly smooth muscle; few elastin fibers

    arterioles

  • 13

    Play a major role in determining blood flow

    arterioles

  • 14

    Smallest of all blood vessels

    capillaries

  • 15

    Site of exchange between blood and tissues (nutrients, hormones)

    capillaries

  • 16

    Walls consist of only tunica interna

    capillaries

  • 17

    Pericytes (spider-shaped smooth muscle-like cells) stabilize capillary wall, control permeability, and are important in brain

    capillaries

  • 18

    Lumen diameter allows RBCs to travel through in single file

    capillaries

  • 19

    Types of capillaries

    continuous; fenestrated; sinusoidal

  • 20

    Occur in most tissues (abundant in skin and muscle)

    continuous

  • 21

    No breaks between endothelial cells

    continuous

  • 22

    Intercellular cleft: small gaps between tight junctions

    continuous

  • 23

    Pinocytotic vesicles shuttle materials through cell membrane

    continuous

  • 24

    Have (pores) covered by membrane

    fenestrated

  • 25

    Much more permeable to fluids and solutes than continuous capillaries

    fenestrated

  • 26

    Found often where capillaries need to absorb materials released by organs (endocrine system)

    fenestrated

  • 27

    Found often where filtrate formation occurs (e.g. kidneys)

    fenestrated

  • 28

    Leaky capillaries with large lumen and fenestrations

    sinusoidal

  • 29

    Fewer tight junctions; larger intercellular clefts

    sinusoidal

  • 30

    Large molecules allowed to pass

    sinusoidal

  • 31

    Found in liver, bone marrow, lymphoid tissues, and endocrine organs

    sinusoidal

  • 32

    Often have specialized macrophages (Kupffer cells)

    sinusoidal

  • 33

    Blood flow is slow

    sinusoidal

  • 34

    Result from convergence of capillaries

    venules

  • 35

    Endothelium

    venous system

  • 36

    Highly porous (fluid and white blood cells freely move across walls)

    venous system

  • 37

    Larger venules have smooth muscle layers (tunica media) and thin tunica externa

    venous system

  • 38

    Veins: result from convergence of venules

    venous system

  • 39

    3 tunics: walls thinner and lumens larger than arteries

    venous system

  • 40

    Very little smooth muscle in tunica media

    venous system

  • 41

    Thick tunica externa with thick collagen fibers and elastic fibers

    venous system

  • 42

    Blood pressure lower in veins but poses problems of getting blood back to heart (large lumens provide little resistance to blood flow) venous valves of the tunica intima, similar to semilunar valves of heart)

    venous system