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Surg Tech A&P > Lymphatic System > Flashcards

Lymphatic System Flashcards

1
Q

lymph fluid (3)

A
  • clear, pale-yellow fluid
  • has entered lymphatic system
  • very similar to blood plasma
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2
Q

lymphatics (2)

A
  • “pipes”

- transport medium

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3
Q

lymphatic tissue (2)

A
  • large numbers agranular leukocytes,

- facilitates response to pathogens

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4
Q

functions of lymphatic system (3)

A
  • drainage of tissue interstices
  • transportation of dietary lipids
  • protection from pathogenic invasion (collects, concentrates, exposes)
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5
Q

lacteals (2)

A
  • specialized lymphatic capillaries in vili

- carry absorbed dietary lipids/lipid-soluble vitamins

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6
Q

chyle (2)

A
  • lymph formed in small intestine

- thick milky white from dietary fats

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7
Q

lymphatic capillaries (3)

A
  • smallest of lymphatics
  • tubes extend deep into tissue
  • absorbs interstitial fluid
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8
Q

intimal valves

A

promote unidirectional flow of lymph

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9
Q

afferent vessels

A

-vessels relay lymph towards a node

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10
Q

efferent vessels (2)

A
  • vessels drain and convey lymph

- emerges form the hilum

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11
Q

lymphatic trunks

A
  • drain certain regions of the body
  • 3 layers
  • 9 total trunks
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12
Q

list the 9 lymphatic trunks (4)

A
  • R&L lumbar
  • R&L bronchomediastinal
  • R&L subclavian trunks
  • intestinal trunk
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13
Q

lymphatic collecting ducts (3)

A
  • drainage passes from trunks to ducts
  • 2 large main channels
  • relay drainage to venous system in inferior cervical region
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14
Q

right lymphatic duct

A
  • receives drainage from superior right quarter of the body
  • R.subclavian
  • R.jugular
  • R.bronchomediastinal
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15
Q

left lymphatic duct

A
  • “thoracic duct”

- receives drainage from superior left and inferior quarters

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16
Q

cisterna chill receives all lymphatic drainage from…

A

right and left lumbar trunks

17
Q

immune response

A

body’s ability to defend itself against specific, recognized invading agents

18
Q

antigen

A

any agent that has breached the body first and second lines of defense (innate or nonspecific) and provokes immune response

19
Q

why are the primary lymphatic organs “primary” (2)

A
  1. ) sites where hematopoietic stem cells divide and produce mature immunocompetent lymphocytes
  2. ) site where immature lymphocytes become immunocompetent
20
Q

primary lymphatic organ “Red Bone Marrow” (3)

A

gives rise to both:

  • mature immunocompetent B-lymphocytes
  • immature pre T-lymphocytes
21
Q

primary lymphatic organ “Thymus Gland” (4)

A
  • bi-lobed
  • anterior, superior, mediastinum
  • pre T-lymphocytes proliferate, mature
  • thymosins aid maturation process
22
Q

thymus gland at 25 years old… (3)

A
  • functional portion reduced
  • thymic atrophy
  • populates secondary lymphatic organs
23
Q

secondly lymphatic organs (2)

A
  • sites where most immune responses occur

- speen, lymph nodes

24
Q

spleen (4)

A
  • largest of lymphatic organs
  • left hypochondriac region (LUQ)
  • lymph node for circulatory system
  • filtration, phagocytosis, immune surveillance
25
Q

spleen functions relating to erythrocytes/thrombocytes

A
  • REMOVAL of old defective erythro/thrombocytes
  • STORAGE serves as blood reservoir
  • HEMOPOIESIS produces 1/3 of fetuses erythrocytes
26
Q

secondly lymphatic organ “lymph nodes”

A
  • bean shaped organs often arranged in chains
  • survey drainage from a body region/series of organs
  • covered by capsule
27
Q

functions of lymph nodes

A
  • filtration of lymph: filter for lymph
  • antibody formation: lymph backs up in nodes increasing interaction with lymphocytes and chance of activating immune response
28
Q

axillary

A
  • drains:
  • upper appendages
  • wall of thorax
  • upper abdomen
  • mammary glands
29
Q

pelvic

A
  • surveys drainage:
  • internal reproductive organs
  • other pelvic viscera
30
Q

abdominal node

A
  • aka periaortic node

- surveys drainage from abdominal viscera

31
Q

lymphatic nodules (MALT)

A
  • not considered true organs
  • gastrointestinal, urinary, reproductive tract
  • MALT mucosa associated lymphatic tissue
32
Q

tonsils

A
  • 5 “sets” (2,2,1)
  • pharyngeal/adenoids: adenoidectomy
  • palatine: tonsillectomy
  • lingual
33
Q

peyers patches

A

work as tonsils for intestines

34
Q

movement of lymph

A
  • resembles floe of blood through venous system

- low pressure, low volume

35
Q

types of lymph movement (5)

A
  • intimal valves
  • skeletal pumps
  • breathing muscle pumps
  • vaso-motion
  • hyrd-ostatic pressure
36
Q

lymphoma

A

-highly malignant neoplasm

37
Q

lymphadenitis

A

inflammation of lymph nodes

Surg Tech A&P (16 decks)

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