Secondary lymphatic organs and tissues Flashcards
Secondary lymphatic organs and tissues include
lymph nodes
spleen
lymphatic nodules
What is the function of the spleen?
The spleen stores and filters blood and makes white blood cells that protect you from infection
What are lymphatic nodules
masses of lymphatic tissue that are not surrounded by a capsule
Where are lymphatic nodules scattered and what are they referred to as?
Throughout the mucous membranes lining the gastrointestinal, urinary, and resproductive tracts and the respiratory airways
- Mucosa-associated lymphatic tissue(MALT)
Innate immunity refers to a wide variety of responses that serve to
protect us against invasions by a wide variety of pathogens and their toxins.
We are born with this kind of immunity
Innate immunity
Two lines of defenses against innate immunity include
1) skin and mucous membranes
2) internal defenses
What are the mechanical defenses?
Skin, mucous membranes, tears, saliva, mucus, cilia,
epiglottis, urine flow, defecating, vomiting
What are the chemical defenses?
- Sebum, lysozyme, gastric juice
What are the internal defenses? Ex. phagocytes
- Antimicrobial proteins
- Phagocytes
- Natural killer cells
- Inflammation
- Fever