Class II MHC Proteins Are Present in the Plasma Membrane

question 118

Multiple Choice

Class II MHC proteins are present in the plasma membrane only when

• A) a helper T cell has engulfed an antigen.
• B) an antigen-presenting cell has engulfed and is processing an antigen.
• C) a virus-infected cell secretes interferons.
• D) a cancerous cell gets attacked by NK cells.
• E) the body cells are healthy.

Understand the ratio and interaction between neurons and glial cells.

Describe the process and limitations of CNS repair and regeneration.

Explain the functions of microglia, mitochondria, lysosomes, and the role of Schwann cells in nerve regeneration.

Grasp the basic structure of atoms and the chemical composition of cells.

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Definitions:

Mitral Cells

Neurons located in the olfactory bulb that act as primary processors of olfactory information.

Acetylcholine

A neurotransmitter involved in the transmission of nerve impulses in the central and peripheral nervous systems, particularly in the stimulation of muscle movement.

Receptor Neurons

Specialized neurons that respond to physical or chemical changes in their surroundings, initiating sensory input to the nervous system.

Bipolar Neurons

A type of neuron with two extensions (one axon and one dendrite), found in sensory organs like the retina of the eye.