X hits on this document

PDF document

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings - page 8 / 62

133 views

0 shares

0 downloads

0 comments

8 / 62

Internal Defenses: Cells and Chemicals

  • The body uses nonspecific cellular and chemical devices to protect itself

    • Phagocytes and natural killer (NK) cells

    • Antimicrobial proteins in blood and tissue fluid

    • Inflammatory response enlists macrophages, mast cells, WBCs, and chemicals

  • Harmful substances are identified by surface carbohydrates unique to infectious organisms (e.g. bacteria, viruses, fungi)

  • A pathogen is any disease causing micoorganism

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

Document info
Document views133
Page views136
Page last viewedSat Dec 03 02:07:11 UTC 2016
Pages62
Paragraphs660
Words3793

Comments