What are the hairs in the nose that filter large particles when we breathe?

Describe two ways by which the motor and/or autonomic nervous systems use negative feedback mechanisms to achieve a particular goal and/or maintain homeostasis.

Questions from Dr. Shyam Mohapatra Select two from following three questions (12-14)    12. (14 pts): “Despite the lack of an inherent mechanism of generating diversity as T and B cells, the members of MHC class of proteins generate substantially higher diversity to present the vast universe of peptides.” Explain this statement? What are the mechanisms in place that make this possible?   13. (14 pts): Consider the claim “T cell effector functions are primarily mediated by secreted products”. To what extent is this statement true for CD4 cells and CD8 T cells? Provide one example for each of these cell types that justify the above statement.   14. (a) (7 pts): How would you identify Th1/TH1 and Th2/TH2 cells and how these cells differ in their effector functions?         (b) (7 pts): Explain the clinical importance of the TH1 and TH2 cells with one example each of a disease.

Question from Dr. Srinivas Bharadwaj  Select one from two questions (17 & 18)   17. (14 pts): List and discuss briefly what the immunological implications are of a molecular defect which inhibits the functioning of (a) beta-2-microglobulin and (b) TAP (transporter associated protein). That is, what functions of these proteins would be inhibited?   18. (14 pts): Briefly compare and contrast the exogenous and endogenous antigen processing pathways. Give general examples of exogenous and endogenous antigens as well as the types of immune responses they elicit (i.e. antibody, CD4 helper, CD8 cytotoxic).

True or False: Passing off another’s work as your own or neglecting to cite the source for your information is considered plagiarism.

______________ is when receptors can bind multiple ligands, which change each others effectiveness in initiating a response. 

Which transport mechanism involves vesicles?

What it’s the most rapid intracellular response of all the receptors?

Of the gasses that act as signaling molecules nitric oxide (NO) is the best known. NO is a… 

The words “Homeostasis” and  “Equilibrium” are synonymous.