Anatomy and Physiology Study Set 1

Astrocytes provide structural support in the nervous system.

Interneurons are specialized to carry impulses from peripheral receptors into the brain or spinal cord.

Nodes of Ranvier connect adjacent neurons.

A synapse is the functional connection between two neurons.

A nerve is a single neuron.

The subarachnoid space contains cerebrospinal fluid.

The gray commissure of the spinal cord surrounds the central canal.

If fibers in an ascending tract of the spinal cord are cut, the affected person will have a loss of motor functions below the injury.

Cell bodies of motor neurons are located in the anterior horns of the spinal cord.

The arbor vitae is part ofthe cerebrum.

Brain damage to the temporal lobe, where recent memory is processed, can result in the inability to form long-term memory.

Sympathetic tone is defined as ongoing stimulation of smooth muscles in the walls of blood vessels, which results in partial constriction.

An action potential is an all-or-none response.

A neuron may release more than one type of neurotransmitter.

Afferent neurons bring sensory information into the central nervous system.

Efferent neurons carry impulses from the central nervous system to effectors.

Most nerves of the body are mixed nerves.

Sensory nerves carry information to effectors.

The butterfly shape seen in a cross section of the spinal cord is composed of white matter.

Cranial nerves connect the brain only to head and neck regions; spinal nerves connect to all regions below the neck.