Lymphatic System

Question 1

3 major components of the lymphatic system

Answer 1

lymph

lymphatic vessels

lymphatic tissue/organs

Question 2

3 major functions of the lymphatic system

Answer 2

darainage

transport

immune responses

Question 3

what does the lymphatic system transport

Answer 3

large particles, debris, and “leaked” plasma proteins from tissues to the blood

absorbed lipids from he GI tract to the liver

Question 4

INTERSTITIAL FLUID IS ESSENTIALLY

Answer 4

BLOOD PLASMA MINUS THE PLASMA PROTEINS

Question 5

once interstitial fluid enters lymphatic capillaries it is referred to as

Answer 5

LYMPH

Question 6

INTERSITITIAL FLUID

Answer 6

the fluid between cells in tissues

Question 7

fluid portion of blood is

Answer 7

BLOOD PLASMA

Question 8

LYMPHATIC CAPILLARIES tend to have

Answer 8

LARGE GAPS between the edges of their endothelial wall cells that allow large particles to enter more easily than the pores of many capillaries

Question 9

lymphatic capillaries are well-suited to REMOVE

Answer 9

LARGE PARTICLES

CELLULAR DEBRIS

ANY PLASMA PROTEINS THAT HAVE LEAKED INTO TISSUES

and return them to the blood via lymphatic vessels

Question 10

progression of lymphatic vessels

Answer 10

BEGIN AS LYMPHATIC CAPILLARIES

MERGE TO FORM LARGER “LYMPHATICS”

MERGE INTO LARGER LYMPH TRUNKS

MERGE INTO two main cheannels
1. THORACIC DUCT
2. RIGHT LYMPHATIC DUCT

Question 11

lymphatic capillaries are LIKE BLOOD CAPILLARIES in that they

Answer 11

consist of a single layer of endothelial cells, with gaps between the cells to allow the entrance of fluid and particles - like pores in blood capillaires

Question 12

lymphatic capillaries are slightly larger in diameter than blood capillaries, and the edges

Answer 12

OF ENDOTHELIAL CELLS OVERLAP to create openings between the cells

Question 13

when interstitial pressure is greater than that in the lymphatic capillaries…

Answer 13

FREE EDNGES “OPEN UP” ALLOWING FLUID AND MATERIALS TO ENTER the lymphatic capillaires

Question 14

lacteals

Answer 14

lymphatic capillaries in the small intestine that allow absorbed lipids to enter lymph

Question 15

LYMPHATICS

Answer 15

RESEMBLE SMALL VEINS, though their walls are thinner and have more numerous VALVES

Question 16

LYMPHATICS LEAD INTO

Answer 16

LYMPH NODES

Question 17

LYMPH TRUNKS

Answer 17

DRAIN LYMPH FROM SPECIFIC AREAS OF THE BODY

Question 18

LARGEST LYMPHATIC VESSELS (2)

Answer 18

RIGHT LYMPH DUCT

THORACIC DUCT

Question 19

RIGHT LYMPH DUCT

Answer 19

DRAINS THE RIGHT ARM, AND RIGHT SIDE OF THE HEAD, NECK AND CHEST

LEADS TO the merger of the RIGHT SUBCLAVIAN VEIN with the right internal jugular vein

Question 20

THORACIC DUCT

Answer 20

DRAINS THE LEFT ARM, LEFT SIDE OF THE HEAD, NECH, AND CHEST, AND THE ENTIRE BODY BELOW THE DIAPHRAGM

EMPTIES INTO the junction of the LEFT SUBCLAVIAN VEIN and the left internal jugular vein

Question 21

What moves lymph?

Answer 21

SKELETAL MUSCLE PUMP

RESPIRATION

Question 22

Two principle categories of lymph tissues and organs

Answer 22

PRIMARY LYMPHATIC ORGANS

SECONDARY LYMPHATIC ORGANS AND TISSUES

Question 23

PRIMARY LYMPHATIC ORGANS

Answer 23

WHERE LYMPHOCYTES ARE PRODUCED AND/OR BECOME IMMUNOCOMPETENT

Question 24

SECONDARY LYMPHATIC ORGANS AND TISSUES

Answer 24

SITES WHERE MOST IMMUNE DEFENSES TAKE PLACE

Question 25

what are two primary lymphatic organs

Answer 25

RED BONE MARROW THYMUS

Question 26

What are the secondary lymphatic organs and tissues?

Answer 26

SPLEEN LYMPH NODES LYMPHATIC NODULES

Question 27

B LYMPHOCYTES ARE FORMED IN

Answer 27

RED MARROR AND BECOME IMMUNOCOMPETENT THERE

Question 28

PRE-T LYMPHOCYTES ARE FORMED IN

Answer 28

RED MARROW BUT THEN MIGRATE TO THE THYMUS TO MATURE into immunocompetent T lymphocytes

Question 29

location of thymus

Answer 29

POSTERIOR TO THE STERNUM

Question 30

dendritic cells

Answer 30

derived from monocytes and assist in T CELL MATURATION

Question 31

mature T cells may leave the thymus and MIGRATE TO

Answer 31

THE SPLEEN, LYMPH NODES, AND OTHER LYMPHATIC TISSUES

Question 32

when does the thymus reach its MAXIMUM SIZE?

Answer 32

INFANCY

Question 33

where do we find SUPERFICIAL clusters of lymph nodes

Answer 33

CERVIAL, AXILLARY, AND INGUINAL AREAS

Question 34

functional portion or a lymph node

Answer 34

OUTER CORTEX AND INNER MEDULLA

Question 35

examples of immune cells found in lymph nodes

Answer 35

B CELLS T CELLS MACROPHAGES

Question 36

before lymph is returned to blood circulation, lymph nodes do what

Answer 36

FILTER LYMPH

Question 37

role of MACROPHAGES in lymph nodes

Answer 37

engulf and destroy some microbes and foreign substances

Question 38

role of LYMPHOCYTES in lymph nodes

Answer 38

destroy some microbes by way of immune responses

Question 39

location of spleen

Answer 39

LUQ OF ABDOMINAL CAVITY

Question 40

THE LARGEST SINGLE MASS OF LYMPHATIC TISSUE

Answer 40

THE SPLEEN

Question 41

white pulp of the spleen consists of lymphatic tissues, with

Answer 41

LYMPHOCYTES AND MACROPHAGES around branches of the splenic artery

Question 42

blood flows into the spleen by way of the. ______ ______ and enters central arteries of the

Answer 42

SPLENIC ARTERY white pulp of the spleen

Question 43

role of red pulp in the spleen

Answer 43

REMOVES WORN-OUT OR DEFECTIVE FORMED ELEMENTS STORES PLATELETS

Question 44

LYMPHATIC NODULES

Answer 44

masses of lymphatic tissues that lack an exterior capsule of connective tissues

Question 45

example of Mucosal-associated lymphoid tissues (MALT)

Answer 45

APPENDIX TONSILS (typically 5 - single pharyngeal, paired palatine, and paired lingual)