Answered: Classifying each of the following as…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Question

Classifying each of the following as either innate immunity, adaptive immunity, or both.

1. Recognize foreign pathogens

2. Involves B and T cells

3. Includes physical barriers such as the skin

Expert Solution

Step 1

Immunity

Immunity is the ability of the body to protect against all types of foreign bodies like bacteria, virus, toxic substances etc which enter the body.

Immunity is done by immune system which is a complex network of lymphoid organs such as bone marrow, thymus , spleen etc.

Type of immunity:

Innate immunity: Also called natural or native immunity, consists of mechanisms that exist before infection and are capable of rapid responses to microbes.
- It is comprised four types of defence barriers:
  - Anatomical barriers(Skin, mucous membrane)
  - Physiologic barriers(Temperature, Low pH)
  - Phagocytic barriers(Neutrophils, Macrophages, NK cells)
  - Inflammatory barriers
Acquired immunity: Acquired or adaptive immunity is the immunity that is developed by the host in its body after exposure to suitable antigen or after transfer of antibodies or Lymphocyte from an immune donor.
- Active immunity(Cell mediated immunity and humoral mediated immunity)
- Passive immunity

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