Etiology Of HIV

Question 1

Name the 2 Lympchocytes

Answer 1

T cells:

• travel from bone marrow to Thymus to mature
• Thymus is a lymphoid gland located behind the sternum
• comprise about 75% of lymphocytes

B cells:

• mature in the bone marrow
• comprise 25% of lymphocytes

Question 2

Name the 5 types of WBC’s

Answer 2

• Neutrophils
• Lymphocytes
• Eosinophils
• Monocytes
• Basophils

Question 3

Name the 3 subtypes of T Lymphocytes

Answer 3

• Killer T cells ( Cytotoxic T cells)
• CD4 cells (Helper T cells)
• Tregs (Regulatory T cells)

Question 4

Helper T cells

Answer 4

• Regulate the activity of the adaptive immune system via B cell activity
• Play a crucial role In Controlling Innate immune system by controlling the activity of Macrophages
• How do they do this? Helper T cell releases cytokines needed to activate both B cells and Macrophages.
• if your CD4/ Helper T cells ⬇️
  Your B cells ⬇️ and Macrophages ⬇️