HLTH 101 Lecture : a) N

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coralworm605

16 Oct 2011

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A healthy immune usually is effective in combating disease. It includes: 1) physical barriers (ie. skin, mucous membranes: active removal (ie. urinary flushing, mucsal escalator system: cilia in upper respiratory tract, destruction (ie. lysozymes in tears, acids in gi tract, phagocytosis, monocytes, neutrophils, and macrophages) Fever: temperature rises 2 degrees when fighting infection. Lactoferrin (prevents iron binding: microbes need iron to survive: specific. Relies on antigens (can be specific (ie. 1 amino acid in a protein) or a molecule (ie. molecular fingerprints)) 3 traits: 1) diverse (responds to different antigens) 3) memory (remembers antigen, provides rapid response for subsequent infection) Signal helper t lymphocytes to recognize antigens (see diagrams) B-cells proliferate into two reponses: primary response. Helper t-cells stimulate cytotoxic t-cells via cytokines (see diagram) Cytotoxic t-cells release substance that penetrate the cell membrane of the microbe. Due to possibly too long of response to virus: immunization. Memory may not last for life (ie. booster shot)

Related Questions

Which of the following is not a type of nonspecific immune response?

A. Inflammatory and fever
B. Antimicrobial proteins
C. Cell-mediated immunity
D. Surface barriers
E. Neutrophils and macrophages

jadeduck36

Innate immune responses rely on the bodyâs ability to recognize conserved features of microbial molecules that are not made by the host. These include:

A.Microbe-associated immunostimulants including many types of molecules on microbial surfaces
B.Activation of blood clotting pathways to starve invading fungal organisms.
C.Activation of the complement system, a group of blood proteins that are activated in sequence to target the microbe for phagocytosis by macrophages and neutrophils, to disrupt the membrane of the microbe, and to produce an inflammatory response.
D.The double-stranded RNA of some viruses.
E.Recognition of specific DNA sequences in invading microorganisms

raspberryraven406

Host Defenses Activity

Our ability to fight off infection is three fold. Below is a list of terms that deal with our defenses. Match the definition with the terms on this sheet and then fill in the attached diagram with the terms below.

Host Defenses

1st Line of defense ___G_
2nd line of defense ____
3rd line of defense ____
Innate, nonspecific immunity____
Acquired, specific immunity____
T lymphocytes____
Complement____
Physical barriers____
Phagocytosis____
Chemical barriers____
Inflammatory response____
Fever____
B lymphocytes _____

Matching Definitions

A. immunity present at birth, provide nonspecific resistance to infection
B. Adaptive immunities: Immunity that develops after the interaction of antigens with the immune system
C. Many different types, involved in cell-to-cell contact or CMI
D. barrier that blocks invasion at the portal of entry
E. Protective cells and fluids; inflammation and phagocytosis
F .Acquired with exposure to foreign substance; produces protective antibodies and creates memory cells
G. Skin and mucus membranes
H. Bile, stomach acid, skin pH, lysozyme
I. Surveys tissue and discover microbes and dead or injured cells and removes them
J. 26 blood proteins that work to destroy bacteria and viruses
K. Rubor, tumor, calor, dolor
L. Initiated by circulating pyrogens which reset the hypothalamus to inhibit the growth of microbes
M. Responsible for AMI and production of antibodies

HLTH 101 Lecture : a) N

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