When B and T cells are fully developed and mature, they are known to be……… . This process takes place in …………………..

What is the role of the surfactant?

Diffusion of gases is directly proportional to their concentration gradients.

Describe the innate and adaptive immunity. Provide the definitions, major characteristics, cell types and mechanisms involved in each one of them. Please adhere to the rubric in order to develop your essay. Rubric: 25%, 50 %, 75% or 100% will be subtracted for incomplete, vague, missing or wrong answers, including spelling mistakes. Innate immunity (10 pts total): Definition:  2pts Characteristics (specificity/memory): 2pt First Line of Defense- description: 3 pts Second Line of Defense- description (mechanisms, cells): 3 pts   Adaptive immunity( 15 pts total): Definition: 2 pts Major characteristics (specificity/memory/ location): 3 pts Describe the two major types of adaptive immunity and the respective immune cell Type of immunity/ Cells mediating this type/ name, brief description (5 pts) Type of  immunity/ Cells (5 pts)

Pulmonary ventilation is best defined as:

Air moves out of the lungs when:

When blood pH falls (i.e., the blood becomes pore acidic), a negative feedback loop is triggered that increases the rate and depth of ventilation to remove carbon dioxide from the blood.

This is a major mediator of inflammatory responses and causes vasodilation:

The pressure between the visceral and the parietal pleura is always negative, below the atmospheric pressure.

Where on the figure is the epiglottis?  Enter the corresponding letter for this structure.