Intro to imunology

Question 1

What are the two branches of the immune system - list the features of them both

Answer 1

Innate-
Always present, Fast reponse
repsonds to common sections of the cell
fixed reponse - doesnt adapt
no memory

adaptive branch-
imporved reponse over time
slow acting
long term memory
adapts to specifics of the pathogen throughout the defense.

Question 2

What are out skin surface defenses

Answer 2

Physical:
Tightly packed skin cells,
Epidermis dead cells flakes off,
Dermis live cells replace epidermal cells- collogen and blood vessles
phagocytes between
Chemical:
Antimicrobials
lyzosmes
sebum low pH
sweat ( salty)

Question 2

What are out mucosal surface defenses

Answer 2

Made of 1-2 layers of cells
both Goblet cells and columnar cells
secretion of muscus which is moved up to the pharynx - mucociliary escelator (in the assophagas)

Question 3

What chemical defenses do the mucus layer have

Answer 3

low pH in the stomac
some cell - lysosmes
defendins
muscus

Question 4

Where do you find the mucus membranes

Answer 4

Ocular surface
rectal
digestive
respiritory tract

Question 4

What is the two primary and two secondary parts of the lymphatic system

Answer 4

Primary:
thymus and bone marrow

Secondary:
Lymph nodes
spleen

Question 5

What is the function of the two primary sectors of the lympatic system

Answer 5

Bone marrow - produce new immune cells via stem cells (eg T cells)

Thymus - A place which teaches immune cells what to attack and what not to attack to prevent autoimmune reponses

Question 6

What is the function of the two secondary sections of the lymphatic system

Answer 6

Lymph nodes:
network connected by lyphatic vessles
aim to drain fluid from tissues
can become the site of immune reponse when pathogens are detected

spleen:
Site of immune reponse primarily for blood born diseases