The Role of Calcium Ion at Chemical Synapses Is to

question 99

Multiple Choice

The role of calcium ion at chemical synapses is to

• A)Depolarize the axon terminal of the presynaptic cell
• B)Bind to neurotransmitter receptors on the postsynaptic cell
• C)Cause fusion of synaptic vesicles with the plasma membrane of the axon terminal
• D)Interfere with IPSPs in the postsynaptic cell
• E)All of the choices are correct

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Definitions:

Endorphins

Natural, pain-relieving chemicals produced by the body during stress, exercise, or pain, promoting feelings of well-being and reduce discomfort.

Morphine

A powerful pain-relieving medication derived from opium, used to treat severe pain.

Gate-Control Theory

A theory that suggests pain is not solely a result of physical injury but is also affected by psychological factors; it proposes that pain signals pass through neural "gates" in the spinal cord.

Spinal Cord

A long bundle of neurons that carries messages between the body and the brain and is responsible for very fast, lifesaving reflexes.