What Is the Function of Stromal Cells in the Bone

question 45

Multiple Choice

What is the function of stromal cells in the bone marrow?

• A)To be stimulated by c- kit from pro-B cells via the stem cell factor molecule.
• B)They produce IL- 7.
• C)They bind to VLA- 4 on pro- B cells via the VCAM- 1 adhesion molecule.
• D)All of the above.

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Definitions:

Operant Conditioning Principles

A method of learning that employs rewards and punishments for behavior. It encourages the recurrence of a behavior with a positive reinforce or decreases it by negative reinforce.

Unconditional Positive Regard

A concept in psychology that refers to accepting and supporting a person regardless of what they say or do, especially in a therapist-client relationship.

Operant Conditioning

An approach to behavior modification that relies on the leveraging of rewards or the infliction of punishments to adjust behavior levels.

Token Economy

A behavior modification system that utilizes tokens as a form of currency for positive behaviors, which can later be exchanged for desired rewards or privileges.