What type of epithelium are type 1 alveolar cells?

The Ventral and Dorsal Respiratory Groups are both located in the:

When you contract your diaphragm and external intercostals, you expand the thoracic cavity.  This creates ______ pressure in the lungs.

The brush border in the small intestine is created by:

The pancreatic duct and the bile duct both empty into which part of the small intestine?

Which law explains why carbon dioxide diffuses out of blood into the air when its blood concentration is higher than its air concentration?

TRUE or FALSE: The appendix helps to kill all the bacteria that get into your large intestine.

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.