Topic 13 - Lymphatic System

Question 1

Overview

Answer 1

includes

• lymph vessels + organs
• T & B lymphocyutes
  
  • protect body against bacteria, viruses, cancer cells

Question 2

List the majorextracellular fluids

Answer 2

1. Blood plasma
2. Interstitial fluid (ISF)
3. Lymph

Question 3

blood plasma

Answer 3

fluid in blood

Question 4

Interstitial Fluid (ISF)

Answer 4

bathes cells (except blood cells)

Question 5

Lymph

where is it located?

Answer 5

inside lymphatic vessels

Question 6

Lymphatic Circulation

1 (ISF)

• how is ISF formed?
• how much of ISF goes where?

Answer 6

ISF - formed by capillaries leaking plasma

• 90% re-enters blood in capillaries + venules
• 10% into lymphatic circulation (now called lymphs)

Question 7

Lymphatic circulation

2 (lymph)

• where does lymph enter?
  
  • what does that connect to?

Answer 7

• enters lymphatic capillaries (closed ended vessels)
• lymphatic capillaries connect to lymphatyic collecting vessels (have valves)

Question 8

lymphatic circulation

3

lymphatic capillaries connect to lymphatyic collecting vessels (have valves)

• what filters what?
• what is transported away from _____ and to where?

Answer 8

• lymph nodes along vessels filter lymph (bacteria, debris)
• transport lymph fluid away from tissues to:
  
  1. right lymphatic duct
  2. thoracic duct

Question 9

transport lymph fluid away from tissues to right lymphatic duct

• ?

Answer 9

lymph from right head, chest, + arm

• drains into right subclavian vein reentering circulation

Question 10

transport lymph fluid away from tissues to thoracic duct

• ?

Answer 10

lymph from below ribs + left body

• collecting vessels from below the ribs converge to an enlarged lymph vessel = cisterna chyli
• thoracic duct drains into LEFT subclavian vein reentering blood circulation

Question 11

collecting vessels from below the ribs converge to an enlarged lymph vessel is called the ____ _______

Answer 11

cisterna chyli (the beginning of the thoracic duct)

Question 12

lymphatic circulation starts at the

Answer 12

lymphatic capillaries

Question 13

lymphatic circulation

from lymphatic capillaries to the:

Answer 13

lymphatic collecting vessels (with valves)

Question 14

lymphatic circulation

from lymphatic collecting vessels (With valves) to

Answer 14

lymphatic ducts

Question 15

lymphatic circulation

from lymphatic ducts to

Answer 15

subclavian veins

Question 16

Lymphatic tissues and organs

What are the primary lymphatic organ and tissues?

Answer 16

1. red bone marrow
2. thymus gland

Question 17

Lymphatic tissues and organs

• What are the secondary lymphatic organ and tissues?
• what happens here?

Answer 17

1. lymph nodes
2. spleen
3. mucosal associated lymphoid tissue (MALT)

it is where lymphocytes proliferate

Question 18

PRIMARY LYMPHATIC ORGAN + TISSUE

red bone marrow

Answer 18

• lymphocytes arise here
• B lymphocytes mature and proliferate (mitosis) here

Question 19

PRIMARY LYMPHATIC ORGAN + TISSUE

thymus gland

Answer 19

• T lymphocytes mature and proliferate (mitosis) here

Question 20

SECONDARY LYMPHATIC ORGAN + TISSUE

lymph nodes

name its locations

Answer 20

• locations:
  
  • cervical
  • axillary (armpit)
  • inguinal (groin)
  • intestinal
  • pelvic

Question 21

SECONDARY LYMPHATIC ORGAN + TISSUE

spleen

Answer 21

• filters blood
  
  • e.g. removes bacteria

Question 22

SECONDARY LYMPHATIC ORGAN + TISSUE

mucosal associated lymphoid tissue (MALT)

Answer 22

• e.g. tonsils, appendix, lymphoid tissues on mucous membranes
• tonsils
  
  • adenoids = pharyngeal
  • palatine
  • lingual

Question 23

tonsils

adenoids = pharyngeal

Answer 23

1

nasopharynx

Question 24

tonsils

palatine

how many?

where is it located?

fact:

Answer 24

• 2
• in oropharynx
• commonly removed

Question 25

lingual

how many?

where is it located?

Answer 25

• 1
• base of posterior part of tongue

Question 26

what does MALT stand for

Answer 26

musosal associated lymphoid tissue