CHAPTER 14: LYMPHATIC SYSTEM

Question 1

lymphatic system

Answer 1

• entire body covered in lymph vessels
• auxillary reroute for return of ECF to circ system
• like a DRAIN for inflammatory responses

surveillance, recognition, protection!

Question 2

lymph
- what is it
- how is it formed
- what is it made of
- main purpose

Answer 2

• plasma-like liquid carried thru lymph circulation
• blood components move out of blood vessels into EC spaces
• made of water, dissolves salts and 2-5% proteins
• transport WBC, fat, cellular debris, and INFECTIOUS AGENTS

Question 3

Lymphatic vessels
- where do they go
- purpose

Answer 3

• capillaries permeate all parts of body BUT the bone, thymus, and placenta (little in brain)
• return lymph to circ (flow toward heart, eventually back to bloodstream)

Question 4

Lymphatic Filariasis
- what is it
- how does it develop
- effects

Answer 4

• tropical infection spread by mosquito
• vector deposit larvae, move into lymph sys and develop into adults
• chronic infec cause lymph circ blockage and elephantiasis (mass extremity swelling)

pathogen suppresses immune response!

Question 5

primary lymphoid organs

Answer 5

• thymus: high growth rate, active till puberty then shrink, T cell mature
• bone marrow: B cell mature

Question 6

secondary lymphoid organs

Answer 6

• spleen and lymph nodes
• collections of cells throughout body tissues, skin, mucous memb

Question 7

points of entry- diff lymph tissues

Answer 7

SALT: skin associated lymphatic tissue
GALT: gut associated
MALT: mucosal associated