Quiz 2: Immune system, respiratory system, and lymphatic system

Immunoglobins

Immunoglobulins (Ig) are Y‑shaped glycoproteins made by plasma cells and function as antibodies

IgG

• Has the most actions of all the immunoglobins

• Most common

IgM

• Primarily found in blood and breastmilk

• First responder

IgA

• Associated with mucous membranes

• Is a Dimer

• Prevents pathogen adherence to epithelial surfaces

IgE

• Binds mast cells and basophils

• Triggers histamine release in allergies

• Important parasite defense

IgD

• Helps initiate B-cell activation

• 

Opsonization

Tagging for phagocytosis

Which lung is bigger?

The right lung

What is Pneumonia?

A lung infection where the alveoli fill with fluid or pus

The thoracic duct

Thoracic duct = largest lymphatic vessel → drains lymph from most of the body → empties into the venous system at the left venous angle (left subclavian + left internal jugular).

Thoracic duct drainage

• Both lower limbs

• Pelvis

• Abdomen

• Left thorax

• Left upper limb

• Left side of head & neck