The Innate Immunity
Discuss how innate immunity defends the body against potential infections. Discuss also the efficiency of each type of innate immunity in your responses.
Respond to 2 other students’ initial posts.
Submission Instructions
The initial post is due on the fourth day of the Unit. Two (2) substantive reply posts are due by the end of the Unit
A “substantive” reply post should have academic support and/or include personal insight on the subject, drawing from your reading, research, data, and personal experiences. A response such as “I agree” or “good job” will not meet the assignment criteria. A substantive response should be a minimum of 3-6 well-structured sentences.
Also use the classmate to respond to what they wrote
Innate immunity is an immunity that you are born into, sometimes its passed down from parents or sometimes its somethings new that you obtained in conception. Innate immunity does not work like adaptive immunity which relays on the body constantly adapting to the pathogen. Innate immunity depends on a group of proteins and phagocytic cells that are used to identify and recognize certain pathogens and will become activated and quickly helps destroy the invaders. Our innate immunity consist of physical barriers, defense mechanisms and general immune responses. Physical barriers consist of the skin which is out first line defense, GI tract, respiratory tract, nasopharynx, cilia and eyelashes. Defense mechanisms can be found as secretions, mucous, bile gastric acid, anything that the body produces as a defense response. General immune response is seen during inflammation, this is when the body response with histamines and attempts to fight the pathogen.
Alberts, B. (1970, January 1). Innate immunity. Molecular Biology of the Cell. 4th edition. Retrieved October 31, 2021
Khan Academy. (n.d.). Innate immunity (article) | immune system. Khan Academy. Retrieved October 31, 2021 repond 1
Tanisha Hernandez
The immune system has two components; the innate (nonspecific) immune system and the adaptive (specific) immune system. The innate immune system forms the first and the second lines of defense. The first line of defense is formed by the skin and the mucous membrane. These form a physical barrier that prevents entry of pathogens into the body. The second line of defense constitutes immune cells which include; natural killer cells, macrophages, neutrophils, dendritic cells, mast cells, basophils, eosinophils. These fight pathogens that invade the body. Fever, interferons, complement system and inflammation also form part of the second line of defense. Neutrophils and macrophages are phagocytes which engulf microorganisms by endocytosis and digest them using hydrolytic enzymes produced by lysosomes. Inflammation confines the harmful agents to one location and also allows for the repair of damaged tissues. Interferons act as messengers between adjacent cells and function to warn healthy cells and enable them to fight viral infection. The complement system is associated with lysis of bacteria. Fever is associated with high temperature which destroys pathogenic enzymes and which also increases body metabolism allowing for repair of damaged tissues (Guyton & Hall, 2015)
