Which Is a Defining Characteristic of Adaptive Immunity

question 71

Multiple Choice

Which is a defining characteristic of adaptive immunity?

• A) nonspecificity
• B) diversity
• C) short-lived responses
• D) self-recognition
• E) reliance on surface barriers

---

Definitions:

Neurotransmitters

Neurotransmitters are chemical messengers that neurons use to communicate with each other or with muscles across synapses.

Postsynaptic Cell

The neuron or cell that receives a signal (neurotransmitter) from another neuron at a synapse.

Demyelinates

Demyelination refers to the process by which the myelin sheath, a protective covering of the nerve fibers in the brain and spinal cord, is damaged or destroyed, affecting the conduction of nerve impulses.

Somatic Motor Neurons

Neurons that transmit impulses from the central nervous system to skeletal muscles, facilitating voluntary muscle movements.