What Finding Suggested That the Brainstem Area Below the Midpontine

question 115

Multiple Choice

What finding suggested that the brainstem area below the midpontine cut played an important role in sleep production?

• A) Animals without a pons sleep all day.
• B) Coffee activates the pons.
• C) A transection through the pons led to no signs of sleeping.
• D) A transection through the pons led to increased sleeping.

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Definitions:

Synaptic Vesicles

Vesicles located within the presynaptic part of a nerve cell that encase neurotransmitters.

Synaptic Cleft

The extremely small gap between neurons at a synapse, through which neurotransmitters are released from one neuron to affect another.

Presynaptic Terminal

The end portion of an axon, responsible for releasing neurotransmitters into the synaptic cleft to communicate with a neighboring neuron's dendrite.

Sarcolemma

The cell membrane of a muscle fiber that encloses its cytoplasm and helps transmit action potentials.