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BMS165 > Blood Vessels WK8 L3 > Flashcards

Blood Vessels WK8 L3 Flashcards

1
Q

WHAT IS THE GENERAL FUNCTION OF ARTERIES?

A

ARTERIES TAKE BLOOD AWAY FROM THE HEART - VEINS GO TOWARDS

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2
Q

WHAT IS THE GENERAL STRUCTURE OF ARTERIES?

A
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3
Q

ARE ALL ARTERIES TH SAME SIZE?

A

NO - THE FURTHER AWAY THE ARTERIES ARE FROM THE HEART THE SMALLER THE DIAMETER

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4
Q

WHAT ARE THE SMALLEST TYPE OF ARTERIES?

A

ARTERIOLES

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5
Q

WHAT DO ARTERIOLES DO?

A

CONTROL THE AMOUNT OF BLOOD FLOW INTO THE CAPILLARY BEDS WITH VASDIALATION AND VASOCONSTRICTION

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6
Q

HOW TO THE TISSUES GET OXYGEN AND NUTRIENTS?

A

THROUGH CAPILLARY BEDS

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7
Q

HOW MNAY LAYERS ARE THERE TO ARTERIES AND VEINS?

A

3

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8
Q

WHAT ARE THE LAYERS OF ARTERIES AND VEINS?

A

INNER LAYER - TUNICA INTIMA
MIDDEL LAYER - TUNICA MEDIA
OUTTER LAYER - TUNICA EXTERNA

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9
Q

WHAT IS THE INNER LAYER / TUNICA INTIMA. MADE UP OF?

A

SMOOTH LAYER OR SIMPLE SQUAMOUS EPITHELIUM CELLS

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10
Q

WHAT DOES THE INNER LAYER / TUNICA INTIMA DO?

A

LINES THE BLOOD VESSELS AND REPELS RED BLOOD CELLS FROM STICKING TO WALLS

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11
Q

WHAT IS THE MIDDLE LAYER / TUNICA MEDIA MADE UP OF?

A

THICKEST LAYER MADE UP OF SMOOTH MUSCLE -

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12
Q

WHAT DOES THE MIDDLE LAYER / TUNICA MEDIA DO?

A

CONTRACTS AND RELXAES FOR VASODIALATION AND VASORESTRICTION

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13
Q

WHAT IS THE OUTTER LAYER / TUNICA EXTRENA MADE UP OF?

A

LAYER OF CONNECTIVE TISSUE

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14
Q

WHAT DOES THE OUTTER LAYER / TUNICA EXTERNA DO?

A

PROVIDES STRUCTURAL SUPPORT TO BLOOD VESSELS

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15
Q

DO VEINS OR ATERIES HAVE A LARGER LUMIN?

A

VEINS

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16
Q

DO VEINS OR ATERIES HAVE A THICKER MUSCULAR LAYER?

A

ARTERIES

17
Q

WHY DO LARGER ARTERIES HAVE MORE FIBRE?

A

TO ACCOMMODATE FOR MORE STRETCH FOR BLOOD PRESSURE DURING HEART RELAXATION

18
Q

WHAT DO THE MEDIUM ARTERIES DO?

A

DICTATE WHERE THE BLOOD IS DIRECTED BY VASODIALLATION OR VASOCONTRICTION

19
Q

DO CAPILLARIES HAVE A MUSCULAR LAYER IN THE WALLS?

A

NO

20
Q

DO VEINS OR ARTERIES HAVE A HIGHER PRESSURE?

A

ARTERIES

21
Q

WHY DO ARTERIES HAVE A HIGHER PRESSURE?

A

THEY HAVE THE HIGHEST PRESSURE OF BLOOD FLOW

22
Q

WHAT MODIFICATION DO VEINS HAVE THAT ARTERIES DO NOT?

A

VALVES THAT STOP THE BACKFLOW OF BLOOD DURING MUSCLES RELAXATION

23
Q

WHAT ARE THE SMALLEST VEINS CALLED?

A

VENULES

24
Q

WHAT DO VENUELS DO?

A

DRAIN THE CAPILLARY BEDS

25
Q

WHAT ARE ELASTIC ARTERIES?

A

AORTIC AND PULMONARY ARTERIS THAT HAVE MORE ELASTIC TISSUES IN THE TINCA MEDIA

26
Q

WHAT DO THE ELASTIC ARTERIES DO?

A

MAINTAIN A RELATIVELY CONSTANT PRESSURE IN THE ARTERY TO CONTROL AND MAINTAIN BLOOD PRESSURE

27
Q

WHAT ARE THE MUSCULAR ARTERIES?

A

MUSCULAR ARTERIS LILE BRACHIAL RADIAL AND FEMEROL THAT HAVE MORE SMOOTH MUSCLE IN THE TUNICA MEDIA

28
Q

WHAT DO THE MUSCULAR ARTERIES DO?

A

DRAWS BLOOD FROM ELASTIC ARTERY AND DELIVERS IT TO ORGANS AND BODY

29
Q

WHERE DO THE SMALLEST ARTERIES FEED INTO?

A

THE MUSCULAR ARTERIES

30
Q

WHAT IS A META ARTERIOLE?

A

A TYPE OF ARTERIOLE THAT CAN CONNECT DIRECTLY TO A VENULE AND BYPASS CAPILLARY BEDS

31
Q

WHAT ARE PRE CAPILLARY SPHINCTERS?

A

CONTRACT AND RELAX TO ALLOW BLOOD FLOW INTO CAPILLARIES TO REGULATE BLOOD FLOW

32
Q

HOW MANY TYPES OF CAPILLARIES IS THERE?

A

3

33
Q

WHAT ARE THE THREE TYPES OF CAPILLARIES?

A

CONTINUOUS CAPILLARIES
FENESTRATED CAPILLARIES
SINUSOID CAPILLARIES

34
Q

WHAT ARE CONTINUOUS CAPILLARIES?

A

CAPILLARIES THAT HAVE A LINING WHERE ONLY SMALL MOLECULES CAN PASS THROUGH LIKE A SINGLE BLOOD CELL

35
Q

WHAT DO CONTINUOUS CAPILLARIES DO?

A

MOVES SUBSTANCES TO AND FROM THE BLOOD STREAM TO AND FROM ORGANS

36
Q

WHAT ARE FENESTRATED CAPILLARIES?

A

CAPILLARIES THAT HAVE SMALL OPENINGS THAT ENABLE GAS EXCHANGE

37
Q

WHAT DO FENESTRATED CAPILLARIES DO?

A

INCREASE THE FLOE OF NUTRIENTS AND WASTE PRODUCTS

38
Q

WHAT ARE SINUSOID CAPILLARIES?

A

HAVE SMALL OPENING THAT ALLOW ONLY SOME SUBSTANCES THROUGH

39
Q

WHAT DO SINUSOID CAPILLARIES DO?

A

BMS165 (39 decks)

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