The decision of double-positive thymocytes to become helper CD4 or cytotoxic CD8 T cells.

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#Unit 7. System Physiology – Animal

Residual volume cannot be measured by Spirometry (lung capacities that include the residual volume also cannot be measured by spirometry)

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#Unit 7. System Physiology – Animal

The fraction of the vital capacity expired during the first second of a forced expiration is referred to as FEV 1

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#Unit 7. System Physiology – Animal

Glial cells 

Play important role in communication within the CNS in partnership with neurons & continue to undergo cell division in adulthood.Have the ability to proliferate after brain injury.

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#Unit 7. System Physiology – Animal

There are two major types of glial cells in the vertebrate nervous system:

Microglia

Macroglia

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Microglia 

arise from macrophages outside of the nervous system are scavenger cells that resemble tissue macrophages and remove debris resulting from injury, infection, and disease.

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#Unit 7. System Physiology – Animal

There are three types of macroglia:

Oligodendrocytes

Schwann cells

Astrocytes