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Block 2 test 2 > Blood vessels > Flashcards

Blood vessels Flashcards

1
Q

Tunica Intima Layers

A

Endothelium
Sub-endothelial layer
Internal elastic lamina (arteries only)

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2
Q

Tunica media layer

A

external elastic lamina

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3
Q

Tunica externa

A

vasa vasorum

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4
Q

Largest arteries

A

Elastic arteries (conducting)

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5
Q

Elastic arteries have

A

prominent Internal and elastic lamina

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6
Q

Characteristics of muscular arteries

A

thick tunica media.Prominent internal elastic lamina.

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7
Q

Arterioles consist of

A

endothelium and 3-5 layers of SM

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8
Q

Metaarterioles

A

SM not continuous but spaced. Allows them to function as a sphincter.

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9
Q

Contraction of AV shunt sends blood to

A

capillary bed

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10
Q

Relaxation sends blood through thoroughfare channels

A

to venues by passing cap bed

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11
Q

Continuous capillary

A

continuous endothelium , continuous basal lamina

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12
Q

Fenestrated

A

continuous BL , porous endothelium

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13
Q

Sinusoidal capillaries

A

porous endothelium , and discontinuous BL

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14
Q

T intimate of veins

A

endothelium , some contain valves

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15
Q

T media of veins

A

mostly CT fibers , some SM

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16
Q

T adventitia of veins

A

most prominent tunic in medium and large veins . SM is oriented longitudinally

17
Q

Lymph vessels lack what?

A

BM

18
Q

3 phases of blood clotting

A

Adhesion of platelets

Aggregation of platelets

platelet pro coagulation activity terminates with the removal of the fibrin clot

19
Q

Extrinsic path

A

Factor 7 and X

20
Q

Intrinsic path

A

Factors 7, 8, 9, 11, X

21
Q

Common pathway

A

activated factor X cleaves prothrombin to thrombin

thrombin cleaves fibrinogen to fibrin

Factor 13 then cross links the fibrin monomers making stable fibrin polymer which entraps platelets to prevent blood loss.

22
Q

Systemic circuit

A 
LV
Aorta
Elastic artery 
Muscular artery
Arteriole
Capillary
Small venule
Large vein
Vena cava
RA
RV
23
Q

Veins have more muscle that runs

A

longitudinal

24
Q

PKC does what regarding blood clotting

A

Turns off the clotting , so high PKC leads to hypercoaguability

25
Q

Factor 7, 10, and Tissue factor are involved in

A

Extrinsic path way

26
Q

Factor 12, 11, 9, 8, and 10

A

intrinsic

27
Q

Cleaves prothrombin to thrombin

A

activated factor X

28
Q

Fibrinogen to Fibrin

A

Thrombin

29
Q

Floating around and binds to the clot to down regulate the pathway

A

plasminogen ,… cleaved to plasmin

30
Q

Lymphatic vessels are lined with

A

endothelium

31
Q

Lymphatic capillaries lack a continuous BM and are ..

A

more permeable than blood capillaries

32
Q

Lymph flow is driven by

A

compression of skeletal muscles

33
Q

Diapedesis occurs are

A

venues and small veins

34
Q

Pericytes can give rise to

A

endothelium and SM when a cap bed is damaged

35
Q

Arterial portal system

A

kidney

36
Q

Venous portal system

A

liver

Block 2 test 2 (16 decks)

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