Exam 12: Nervous Tissue

Name the type of membrane channel that opens in response to touch,pressure,vibration,or tissue stretching and is found in the auditory receptors of the ear,and in touch and pressure receptors in the skin.

Which of the following are divisions of the peripheral nervous system?

Which of the labeled cells in the diagram is a neuroglial cell that forms and maintains the myelin sheath around CNS axons?

In temporal summation,a single presynaptic neuron stimulates the creation of action potentials in a postsynaptic neuron when it

Which of the following neurotransmitters are used in virtually all of the inhibitory synapses found in the spinal cord?

Which of the neurons is considered to be a bipolar neuron?

Na⁺/K⁺-ATPase is considered to be an electrogenic pump because

Which of the labeled cells in the diagram is a neuroglial cell that removes debris and acts as a phagocyte?

An excitatory neurotransmitter _____ the postsynaptic membrane.

Which of the following structures is labeled D in the diagram?

Describe the difference between spatial and temporal summation in a postsynaptic neuron.

This type of neural circuit consists of a single presynaptic neuron synapsing with several postsynaptic neurons.

Faster communication and synchronization are two advantages of

Saltatory conduction

Wallerian degeneration refers to

In an action potential,the current that flows down the axon of a neuron is generated by the movement of _____ across the membrane.

When the summed total of postsynaptic potentials rises above threshold,creation of action potentials occurs

Which of following organelles is a common site of protein synthesis in neurons?

With respect to neurons,the term "nerve fiber" refers to

Which of the diagrams in the figure represents a ligand-gated channel?