The Function of Nervous Tissue OS 12.3 cfu quiz

What is the term for the electrical signal generated if a stimulus is strong enough to change the voltage of a cell membrane?

• Action potential

• Resting potential

• Synaptic potential

• Inhibitory potential

What process describes the movement of an action potential along the axon?

• Propagation

• Diffusion

• Conduction

• Reflection

What molecule is released at the synaptic end bulbs to transmit a signal to the next neuron?

• Neurotransmitter

• Hormone

• Enzyme

• Antibody

Where in the brain does the conscious perception of water temperature begin?

• Cerebral cortex

• Thalamus

• Cerebellum

• Medulla oblongata

What is the function of the thalamus in the pathway of sensory information?

• Acts as a relay for sensory information

• Initiates muscle contraction

• Produces neurotransmitters

• Controls heart rate

What is the final step after the brain processes the stimulus of water temperature?

• A plan is developed about what action to take

• The thalamus sends a signal to the muscles

• The neurotransmitter is reabsorbed

• The axon hillock is deactivated

Explain the sequence of events from the cerebral cortex sending a command to the contraction of a muscle fiber.

• Cortex sends signal → upper motor neuron → spinal cord synapse → lower motor neuron → neuromuscular junction → acetylcholine release → muscle contracts

• Cortex sends signal → lower motor neuron → spinal cord synapse → upper motor neuron → neuromuscular junction → acetylcholine release → muscle contracts

• Cortex sends signal → spinal cord synapse → upper motor neuron → lower motor neuron → neuromuscular junction → muscle contracts

• Cortex sends signal → neuromuscular junction → upper motor neuron → lower motor neuron → acetylcholine release → muscle contracts