G.B.Sc.N - MICROBIOLOGY-4

Chemically antibodies are made up of:

• Carbohydrates

• Lipid

• Minerals

• Protein

First line of defense includes:

• B-cells

• Phagocytes

• Skin and mucus membrane

• T-cells

Maturation site of B-cells in human is:

• Bone marrow

• Bursa of Fabricius

• Spleen

• Thymus

Second line of defense includes:

• B-cells

• Phagocytes

• Skin and mucus membrane

• T-cells

Third line of defense includes:

• B-cells & T-cells

• Normal flora

• Phagocytes

• Skin and mucus membrane

Maturation site of T-cells in human is:

• Bone marrow

• Bursa of Fabricius

• Spleen

• Thymus

It provides specific immunity:

• B-cells & T-cells

• Normal flora

• Phagocytes

• Skin and mucus membrane

Non-Specific defense mechanisms operated in the respiratory tract include:

• Desquamation, keratin, sebum, sweat

• Flushing action of urine, pH of vagina

• Nasal hair, Mucociliary blanket, epiglottis, alveolar macrophages

• Tears, lysozyme

Non-Specific defense mechanisms operated in skin include:

• Desquamation, keratin, sebum, sweat

• Flushing action of urine, pH of vagina

• Nasal hair, Mucociliary blanket, epiglottis, alveolar macrophages

• Tears, lysozyme

Non-Specific defense mechanisms operated in genitourinary tract include:

• Desquamation, keratin, sebum, sweat

• Flushing action of urine, pH of vagina

• Nasal hair, Mucociliary blanket, epiglottis, alveolar macrophages

• Tears, lysozyme