Exam 10: Functional Organization of Nervous Tissue

Collections of gray matter in the CNS are called

Action potentials can jump from the presynaptic terminal to the postsynaptic terminal.

Dendritic spines are areas that form synapses with axons of other neurons.

The movement of sodium ions through activated voltage-gated Na⁺ channels into the cell is called

Leak channels open and close in response to stimuli.

Nonmyelinated axons do not have Schwann cells or oligodendrocytes associated with them.

Which of the following is NOT a structural classification of neurons?

Which of the following is TRUE of a graded potential?

A potential that does not degrade and travels along an axon is called a(an)

Once a neurotransmitter has bonded to its receptor on the postsynaptic terminal, it stays attached to continue producing an EPSP or IPSP.

An action potential occurs according to the all-or-none principle.

Which of the following is TRUE of action potential propagation?

An increase in the extracellular concentration of calcium ions will cause voltage-gated sodium channels to close.

A single postsynaptic terminal can receive both EPSPs and IPSPs at the same time.

Multipolar neurons include

Which of the following is NOT part of a chemical synapse?

In axoaxonic synapses

Schwann cells form

Groups of cell bodies and nonmyelinated axons form

Neurons that release neurotransmitters that cause IPSPs