Exam 7: The Nervous System: Neurons and Synapses

Which of the following is NOT a function of astrocytes?

Botulism toxin prevents release of ACh,causing

Endocannabinoids are retrograde neurotransmitters,meaning they are

Ion channels that open in response to depolarization are called

All axons in the PNS have a myelin sheath.

Which poison inhibits glycine receptors?

Glycine is released at extensor muscles when flexor muscles are contracting.

Which of the following is NOT a type of glutamate receptor?

A bundle of axons in the CNS is called a/an

The normal effect of $\beta$ -endorphin can be blocked by

Action potentials would be conducted most rapidly by

What neurotransmitter is used by neurons with cell bodies in the raphe nuclei along the midline of the brainstem?

Excitotoxicity is caused by

Sensory nerves cause muscle contraction.

The gap of exposed axon in the myelin sheath is the

Norepinephrine binding to a receptor stimulates the activity of adenylate cyclase.

Chemicals that stimulate action potentials in postsynaptic cells are called

Benzodiazepines act by increasing ________ activity.

The mesolimbic dopamine neurons arise in the midbrain and terminate in the

During an action potential