Exam 9: The Central Nervous System

Describe cerebrospinal fluid flow from secretion to absorption.

Reasoning arises in the outer layer of neurons of which of the following?

Which is NOT housed in the medulla oblongata?

Match these terms with their descriptions. -carry primarily efferent signals from the brain

Extracellular fluid is a protective component of the CNS.The ________ fluid, found inside the pia mater, and the ________ fluid, found in ventricles between the pia mater and arachnoid membrane, make up the extracellular environment for neurons.They communicate across leaky junctions of the ________ membrane and the ________ cell layer that lines the ventricles.

Cerebrospinal fluid is produced by the

Describe the embryonic development of the nervous system.

The only fuel source for neurons under normal circumstances is ________.Low blood levels of this is termed ________, which can lead to confusion, unconsciousness, and eventually death.In order to synthesize enough ATP to continually transport ions, the neurons also exhibit high rates of ________ consumption.To supply these needs about ________% of the blood pumped by the heart goes to the brain.

Match these terms with their descriptions. -projections that carry sensory information to the brain

Match these brain areas with their locations. -parietal lobe

Match these terms with their descriptions. -motor fibers leave the spinal cord's gray matter via this

Simple reflexes in a worm are integrated within a segment rather than in the brain, because

For the structures listed below, choose one of the following: -cerebral cortex

Match these brain areas with their descriptions. -playing key roles in homeostasis, an area that contains centers for hunger and thirst, as well as controlling the autonomic nervous systems

Match these brain areas with their locations. -occipital lobe

The earliest discrete embryonic structure from which the entire nervous system eventually develops is the

Match these terms with their descriptions. -unmyelinated, consists of cell bodies, dendrites, and axon terminals

Do the terms vertebral column and spinal cord mean the same thing? Explain.

Your best friend, Fred, was injured when he fell several meters from a cliff, but his vital signs are stable and all lacerations have been repaired.His physician is in the process of determining what neural damage he has sustained.What may be damaged if Fred is unable to walk normally? (Hint: Consider various types of factors that influence motor output, as well as the structures immediately responsible for movement.)

Match these terms with their descriptions. -projections of white matter that remain in the spinal cord