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BMS165 > Lymphatics WK9 L2 > Flashcards

Lymphatics WK9 L2 Flashcards

1
Q

WHAT IS THE LYMPHATIC SYSTEM?

A

THE DRAINAGE SYSTEM OF THE BODY - NETWORK IN BODY CONSITIONG OF LYMPH FLUID TUBES AND VESSELS THAT TRANSPORTS LYMPH

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2
Q

WHAT DOES THE LYMPHATIC SYSTEM DO?

A

CONSISTING OF A SERIES OF VESSELS THAT MOPS UP FLUID IN TISSUES

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3
Q

WHERE DOES THE LYMPH FLUID GO?

A

FLUID DRAINS THROUGH LYMPH NODES AND DRAINS INTO BLOOD STREAM

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4
Q

WHAT ARE THE FUNCTIONS OF THE LYMPHATIC SYSTEM?

A

IMMUNITY
LIPID ABSORBTION
FLUID RECOVERY

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5
Q

HOW DOES THE LYMPHATIC SYSTEM EFFECT IMMUNITY?

A

FLUIDS FROM CAPILLARY BEDS ARE FILTERED AT LYMPH NODES BY IMMUNE CELLS
IMMUNE CELLS RESPOND TO ENCOUNTERED FOREIGN CHEMICALS OR CELLS

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6
Q

HOW DOES THE LYMPHATIC SYSTEM EFFECT IPID ABSORBTION?

A

LACTEALS IN SMALL INTESTINE

ABSORBS DIETARY NUTRIENTS

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7
Q

HOW DOES THE LYMPHATIC SYSTEM EFFECT FLUID RECOVERY?

A

ABSORBS PLASMA PROTEINS AND FLUIDS FROM TISSUES AND RETURNS BACK TO THE BLOOD STREAM

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8
Q

WHAT IS LYMPH?

A

COLOURLESS FLUID SIMILAR TO PLASMA WITH LESS PROTEINS

FORMS FROM FLUID LEAKING OUT OF CAPILLARES

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9
Q

WHAT ARE LYMPHATIC CAPILLARES?

A

SMALLEST OF LYMPHATIC VESSELS

CLOSED AT ONE END AND FILTER FLUID FROM BODYS CELLS AND TISSUES

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10
Q

HOW ARE THE LYMPHATIC CAPILLARES CONSTRUCTED?

A

MADE OF ENDOTHELIAL CELLS CLOSELY OVERLAPPED

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11
Q

WHAT DO THE ENDOTHELIAL CELLS DO?

A

ALLOW BACTERIA AND OTHER CELLS ENTRANCE INTO LYMPHATIC CAPILLARIES
LAYERED CELLS CREATES VALVE LIKE FLAPS THAT OPEN WHEN INTERSTITIAL FLUID PRESSURE IS HIGH, AND CLOSE WHEN IT IS LOW

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12
Q

WHAT IS THE ROUTE OF THE LYMPHATIC SYSTEM?

A

LYMPHATIC CAPILLARIES CONVERGE TO FORM COLLECTING VESSELS
COLLECTING VESSELS
LYMPHATIC TRUNKS
COLLECTING DUCTS

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13
Q

WHAT ARE THE COLLECTING VESSELS?

A

VESSELS THAT START DRAINING FLUID THROUGH LYMOH NODES

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14
Q

WHAT DO THE COLLECTING VESSELS DO?

A

DRAIN FLUID FROM THE LYMPH NODES AND CONVERGE TO FORM THE LYMPHATIC TRUNKS

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15
Q

WHAT DO THE LYMPHATIC TRUNKS DO?

A

6 OF THEM DRAIN LARGE AREAS OF THE BODY AND CONVERGE TO FORM THE R AND L COLLECTING DUCTS

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16
Q

WHAT DOES THE R COLLECTING DUCT DO?

A

RECEIVES LYMPH FROM R ARM, R SIDE OF HEAD AND THORAX, THEN EMPTIES INTO R SUBCLAVIAN VEIN

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17
Q

WHAT DOES THE L COLLECTING DUCT DO?

A

RECEIVES LYMPH FROM BELOW DIAPHRAM, L ARM, L SIDE OF HEAD, NECK AND THORAX, THEN EMPTIES INTO L SUBCLAVIAN VEIN

18
Q

WHICH COLLECTING DUCT IS THE LARGEST?

A

THE L COLLECTING DUCT BEING LARGER AND LONGER \

BEGINS AS A PROMINENT SAC IN ABDOMEN CALLED CISTERNA CHYLI

19
Q

WHY IS THE L COLLECTING DUCT LARGER?

A

BECAUSE IT DRAINS A LARGER AREA

20
Q

WHAT ARE THE MECHANISIMS OF LYMPHATIC RETURN?

A 
RHYTHMIC CONTRACTING OF LYMPH VESSELS 
SKELETAL MUSCLE PUMP
THORASIC PUMP
VALVES 
BLOOD FLOWING IN SUBCLAVIAN VEINS
EXERCISE
21
Q

WHAT DOES RHYTHMIC CONTRACTING OF LYMPH VESSELS DO DURING LYMPHATIC RETURN?

A

STRETCHING OF VESSELS STIMULATES CONTRACTION

22
Q

WHAT DOES THE SKELETAL MUSCLE PUMP DO DURING LYMPHATIC RETURN?

A

WHEN MUSCLE CONTRACTS, THE LYMPHATIC VESSEL CONTRACTS FORCING LYMPH UPWARDS

23
Q

WHAT DOES THE THORASIC PUMP DO DURING LYMPHATIC RETURN?

A

INHALATION CRATES PRESSURE ON THE LYMPHATIC VESSELS

24
Q

WHAT DO THE VALVES DO DURING LYMPHATIC RETURN?

A

STOP THE BACKFLOW FOR LYMOG FROM GOING BACK DOWN THE LYMPHATIC VESSEL AFTER MUSCLE CONTRACTION

25
Q

WHAT DOES BLOOD FLOWING IN SUBCLAVIAN VEINS DO DURING LYMPHATIC RETURN?

A

FLOWING BLOOD DRAWS IN THE LYMPH

26
Q

WHAT ARE THE MAJOR TYPES OF LYMPHATIC CELLS?

A

T LYMPHOCYTES - T CELLS
B LYMPHOCYTES - B CELLS
NATURAL KILLER CELLS - NK CELLS

27
Q

WHAT DO T LYMPHOCYTES - T CELLS DO?

A

RECOGISE AND ATTACK FOREIGN ANTIGENS

MATURE IN THYMUS

28
Q

WHAT DO B LYMPHOCYTES - B CELLS DO?

A

ACTIVATION CAUSES PROLIFERATION AND DIFFERENTIATION INTO PLASMA CELLS THAT PRODUCE ANTIBODIES
MATURE IN BONE
MEMORY B CELLS THAT DO NOT DIFFERENTIATE

29
Q

WHAT DO NATURAL KILLER CELLS - NK CELLS DO?

A

ATTACKS BACTERIA, TRANSPLANTED TISSUES AND INFECTED HOST CELLS

30
Q

WHAT ARE LYMPH NODES?

A

ELONGATED KIDNEY BEAN SHAPED STRUCTURE ROUGHLY 3CM IN SHAPE

31
Q

WHAT ARE THE FUNCTIONS OF LYMPH NODES?

A

FILTER THE LYMPH AND ACT AS A SITE FOR T AND B CELL ACTIVATION

32
Q

WHAT DO LYMPH NODES CONTAIN?

A

RETICULAR AND DENDRITIC CELLS ABD ALSO MACROPHAGES WHICH PHAGYOCITISE FOREIGN MATTER

33
Q

HOW MANY LYMPH NODES ARE THERE?

A

ROUGHLY 450

34
Q

WHERE ARE THE LYMPH NODES LOCATED?

A

GROIN, AXILLA, CERVICAL REGION, ABDOMEN, BEHIND KNEE

35
Q

WHAT IS THE THYMUS?

A

A LYMPHATIC ORGAN IN THE SUPERIOR MEDIASTINUM

36
Q

WHAT DOES THE THYMUS DO?

A

HOUSES DEVELOPING LYMPHOCYTES AND SECRETES HORMONES TO PROMOTE THE DEPLOYMENT AND DEVELOPMENT OF T CELLS

37
Q

WHAT DOES THE THYMUS CONTAIN?

A

EPITHELIAL CELLS THAT FORM THE BLOOD THYMUS BARRIER

38
Q

WHAT IS THE SPLEEN?

A

LARGEST LYMPHATIC ORGAN LOCATED BETWEEN STOMACH, DIAPHRAM, AND L KIDNEY

39
Q

WHAT DOES THE SPLEEN DO?

A

PRIMARILY AN OPEN MICROCIRCULATION
BLOOD PRODUCTION IN FEOTUS AND RED BLOOD RESERVIOUR
IMMUNE SURVEILANCE WITH LARGE NUMBER OF WHITE BLOOD CELLS

40
Q

WHAT DOES THE SPLEEN CONTAIN?

A

HAS TWO TISSUES CALLED WHITE AND RED PULP

41
Q

WHAT IS IN THE WHITE PULP?

A
42
Q

WHAT IS IN THE RED PULP?

A

LARGE NUMBER OF RED BLOOD CELL SUPPLY

BMS165 (39 decks)

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