Exam 9: Nervous System

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

In order to prevent a patient from experiencing pain, a local anesthetic is injected around sensory neurons to prevent an action potential. How does a local anesthetic work?

A __________ is defined as a rapid automatic response to a stimulus.

What type of neurons are only found in specialized parts of the eyes, nose, and ears?

Which glial cells are found in the central nervous system and function to phagocytize bacterial cells and cellular debris?

What is the first component of a reflex arc?

Which glial cells provide structural support between neurons and blood vessels, have numerous processes, and help regulate extracellular nutrient and ion concentrations?

Considered the emotional brain, what part of the brain controls emotional experience and expression?

The pressure of cerebrospinal fluid is usually measured by introducing a hollow needle between lumbar vertebrae into the __________.

What is the functional classification of neurons that are entirely contained within the brain or spinal cord?

The __________ root of a spinal nerve consists of axons of motor neurons.

A nerve is a single neuron.

Which of the following are the cellular processesof neurons that provide receptive surfaces for input from other neurons?

What structure is a complex network of tiny islands of gray matter in the brain that "awakens" the cerebral cortex?

What state is caused by unequal distribution of positive and negative charges across the plasma membrane of a neuron?

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

What happens when the measured potential of a membrane reaches threshold?

In most neurons, what is the approximate threshold potential?

What is the function of the reticular formation?

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