antomony and physiology exam 1 review Flashcards

The term central nervous system refers to the ________.

Which of the following describes the nervous system integrative function?

Schwann cells are functionally similar to ________.

Collections of nerve cell bodies outside the central nervous system are called ________.

Neuroglia found in the CNS that change the permeability of capillaries in the brain by binding to and surrounding these blood vessels are called ________.

Bipolar neurons are commonly ________.

That part of the nervous system that conducts impulses from the CNS to the skeletal muscles is the ________ nervous system

Which of the following is not a function of the autonomic nervous system?

Which of the following is not characteristic of neurons?

Which ion channel opens in response to a change in membrane potential and participates in the generation and conduction of action potentials?

Which of the following does not correctly describe a graded potential?

Immediately after an action potential has peaked, which of the following channels will open?

The interior surface of a neuron's plasma membrane at resting membrane potential will have a

The period after an initial stimulus when a neuron is not sensitive to another stimulus is the ________.

Which ion channel opens in response to a change in membrane potential and participates in the generation and conduction of action potentials?

Immediately after an action potential has peaked, which of the following channels will open?

Saltatory conduction is made possible by ________.

18. In an unmyelinated axon, which of the following will determine the velocity of action potential tramsmission?

In a myelinated axon, which of the following will not determine the velocity of action potential transmission?

20. The neuron cannot respond to a second stimulus, no matter how strong it is.

As the membrane of the presynaptic neuron is depolarized, which voltage gated channels are opened in the presynaptic membrane so that neurotransmitter can be released

Neurotransmitters are released into the synapse from

Which of the following is not a way for neurotransmitters to be inactivated?

Excitatory postsynaptic potentials are all of the following, except,

Inhibitory postsynaptic potentials are all of the following, except,

Place the following in the correct order:

1. Action potential arrives at the axon terminal.
2. Voltage-gated Ca²⁺ channels open, allowing Ca²⁺ to enter.
3. Ca²⁺ causes release of neurotransmitters from synaptic vesicles.
4. Neurotransmitter diffuses across synapse to bind specific receptors on the postsynaptic membrane.
5. Neurotransmitters bind specific receptor channels, allowing ions to enter or exit, causing a graded potential.

Depolarizations vary in amplitude (size).

Produced by the opening of voltage-gated Na⁺ channels

A stimulus has to be strong enough to reach threshold

Initiated by neurotransmitter binding to receptor ion channels on the postsynaptic membrane

Can be added in time and space (temporal and spatial summation

Decays with distance

EPSPs and IPSPs

This neurotransmitter crosses the synapse between motor neuron and muscle.

Which neurotransmitter will always produce hyperpolarization in the postsynaptic neuron?

Among the reasons why reflexes are so fast is that

A single neuron in the brain can activate hundreds of skeletal muscle fibers.

You are at your high school reunion where they are playing the school fight song (auditory), which takes place at the school (visual) and the odors emanating from the restrooms all trigger memories of your high school days.

you are hurrying to class because you are late, causing you to breath harder.

Walking engages this circuit