XIX. Lymphatic and Immune System

  • Major Components and Functions of the Lymphatic System
  • Formation of Lymph Fluid
  • Lymph Vessels and Return to the Blood
  • Location and Function of Lymph Nodes and the Spleen
  • Lymphocytes
  • Immunity
    • Antigens
    • antibodies
  • Innate Immunity
    • Defensive cells
      • Natural killer cells (NK cells)
      • Basophils
      • Mast cells
      • Phagocytes
      • Langerhans cells
      • Chemical defenses


b. Complement

c. Inflammation

d. Fever

  • Adaptive Immunity
    1. Cell-mediated
    2. Antibody mediated
  • Thymus
    1. Stem cells
    2. T lymphocytes – T cells
  • Humoral immunity and Cell Mediated Immunity
  • Development and Function of B Cells and T Cells
  • Acquired Immunity and Genetic Immunity
  • Vaccinations
  • Classifications of Microorganisms
  • Infectious Disease
  1. Methods by which infectious diseases are spread
  2. Roles for EMS in public health
    • Health prevention and promotion
      1. primary prevention—preventing disease development
        • a)  vaccination
        • b)  education
      1. secondary prevention—preventing the complications and/or
        progression of disease
      2. health screenings
    • Disease surveillance
      1. EMS providers are first line care givers
      2. patient care reports may provide information on epidemics
        of disease
  • Infectious Disorders (Coronavirus)
    1. Pathophysiology
    2. Signs and symptoms
      • Fever
      • RR complaint
      • Loss of taste/smell
      • Other S/S
      • Pharmacologic and non-pharmacologic interventions
  • Epidemiology diseases
    1. Endemic
    2. Epidemic
    3. Pandemic
  • Pathophysiology of Infectious Disease (Covid)
    • Infectious agents
      1. Viruses
    • Factors that affect agent’s ability to cause disease
    • Chain of infection
      1. Infectious agent
      2. Reservoir
      3. Portal of entry
      4. Mode of transmission
        • Direct contact
        • Droplet
        • Vector
      1. Portal of exit
      2. Factors that affect susceptibility
    • Body’s response

1. Barriers
a. External

  1. flora
  2. skin
  3. gastrointestinal system
  4. respiratory system

b. Internal barriers

  1. inflammatory response
  2. immune response
  3. limited to specific

E. Stages of infectious disease

1. Latent

2. Incubation period
3. Communicability period

4. Disease period

  1. Patients with Communicable Diseases
    • Overview
      1. Exposure to some infectious diseases can pose a significant health risk to EMS providers
      2. It is important to ensure personal protection on every emergency response
      3. Required precautions will depend on the mode of transmission and the
        pathogen's ability to create pathological processes
        • In some cases gloves will provide for necessary protection
        • In other cases, respiratory barriers will also be indicated

Instructor Resources:

CDC Hand Hygiene Guideline:

Infection Prevention Guideline:


Content Creator: Madison Browning
CAPCE Course Number: 21-EMTP-F3-1319
NJ Course Number: 145909
Total CE Hours: 1
Level: Basic
EMT-CE uses the NEMSES guidelines as the foundation for every course outline.