Exam 12: Fundamentals of the Nervous System and Nervous Tissue

Use the diagrams above to answer the following questions. -Identify which diagram represents a microglial cell.

Use the diagram pictured above to answer the following questions. -Identify the letter that indicates the region of a neuron where neurotransmitters are released.

The difference between myelinated and unmyelinated axons in the PNS is that

Nonmyelinated axons

The chemical substance that is released at axon terminals is called a

Special somatic senses have receptors that are located mostly in the head, including hearing and balance and vision.

In the spinal cord, the cell bodies of most interneurons lie in

Mitochondria are particularly abundant here.

A ________ circuit occurs when many neurons synapse onto one neuron.

In a converging circuit, one presynaptic neuron synapses with many other neurons.

Which of these is not a function of the nervous system?

________ processing occurs when information from a single neuron is sent along two or more pathways traveling in the same direction.

Which of the following is the correct path an impulse takes across a synapse?

A man walking barefoot stepped on a piece of glass. His foot jerked upward in which type of reflex?

The ________ of a presynaptic neuron associates with the dendrite of a postsynaptic neuron.

Cytoplasm, organelles, and neurotransmitters move through the cytoplasm of the axon by a mechanism called ________.

An axon collateral from one neuron that circles back and synapses with a previous neuron describes

Of the following, which is the only structure that is in the PNS, as opposed to the CNS?

These neurons reside only in the CNS and connect motor and sensory neurons.

The entire nerve is surrounded by a tough fibrous sheath called the