BIO 3124 Lecture 15: Immunology
Document Summary
Doesn"t discriminate between harmful or non-harmful foreign particles. Prevent propagation of the foreign entity to other individuals of the same species. All the mechanisms used by the human body to protect itself against foreign invaders - the antigens. Recruit and activate the 3rd line of defense. Not educated - no discrimination between self and non-self. Equal damage to self and to the antigen. Will be able to improve the next attack. To determine the characteristics of antigen to determine the attack. The interior is sterile unless there is an infection. In the man, all cavities represent the interior. In the woman, all the cavities, except for the pelvic cavity represent the interior. The gastrointestinal tract and apart of the respiratory tract are external. The upper respiratory tract is considered exterior and the lower (lungs) is considered interior. Microorganisms need iron for growth, this will prevent growth. Moves particles back up if they went down.