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Nervous System Org
Nervous System Organization
| Question | Answer |
|---|---|
| The brain and spinal cord are components of the _____. | central nervous system |
| The axons and dendrites extend from the spinal cord o the muscles and glands and form _____. | nerves |
| The spinal cord passes downward from the brain and extends through a bony tunnel found in _____. | vertebrae |
| The spinal cord is continuous with the _____. | brain (medulla oblongata) |
| Three membranes surrounding and protecting the spinal cord are called _____. | meninges |
| The outermost membrane surrounding the spinal cord is the _____. | dura mater |
| The inner membrane surrounding the spinal cord and having many blood vessels is the _____. | pia mater |
| Clear, watery fluid is found in the central canal of the spinal cord and is called _____. | cerebrospinal fluid |
| Injury to the ventral root of the spinal cord results in a condition called _____. | paralysis |
| The spinal cord serves as a coordinating center for the _____. | reflex arc |
| The brain receives impulses from the spinal cord as well as from 12 pairs of _____. | cranial nerves |
| The brain is composed of two major _____. | hemispheres |
| The brain consumes about one quarter of the body’s _____. | oxygen |
| The outer portion of the brain is mainly composed of _____. | gray matter |
| The numerous convolutions of the brain are called _____. | gyri |
| The anterior portion of each cerebral hemisphere is occupied by a lobe called the _____. | frontal lobe |
| At the posterior portion of the cerebral hemispheres is a lobe called the _____. | occipital lobe |
| The region of the frontal lobe concerned with motor function for speech is _____. | Broca’s area |
| The sense of smell is located deep within a portion of the brain known as the _____. | cerebrum |
| The interpretation of the visual patters occurs in the lobe of the brain known as the _____. | occipital lobe |
| The cavities of the brain are called the _____. | ventricles |
| The brain region lying posterior to the medulla and serving as a coordinating center for motor activity is the _____. | cerebellum |
| The cerebellum is composed of two lateral _____. | hemispheres |
| Because it is a reflex center for coordinating muscle activity, the cerebellum helps smooth gait and maintain _____. | posture |
| The nucleus of the diencephalon relaying sensory impulses into the cerebral cortex is the _____. | thalamus |
| The nucleus of the diencephalon producing some hormones stored to be released by the pituitary gland is the _____. | hypothalamus |
| Emotional experiences such as fear, anger, pleasure, and sorrow are regulated in a ring of tissue at the edge of the brain stem called the _____. | limbic system |
| The round bulge in the brain stem separating the midbrain from the medulla is the _____. | pons |
| The swollen stem of the brain connecting the spinal cord to the remainder of the brain is the _____. | medulla oblongata |
| In the cerebrum of the brain, impulses cross over to the opposite sides of the brain via the _____. | decussation of pyramids |
| The network of nerve fibers in the medulla responsible for activating the cerebral cortex is the _____. | reticular formation |
| The sensory somatic system is composed of spinal nerves and _____. | cranial nerves |
| The human body has spinal nerves numbering _____. | 31 pairs |
| The cranial nerve regulating swallowing, senses, and control of the face, teeth, and tongue is the _____. | olfactory nerve |
| The cranial nerve with sensory and motor functions controlling the heart, blood vessels, and organs of the viscera is the _____. | vagus nerve |
| The spinal nerves communicate impulses between various parts of the body and the _____. | spinal cord |
| Bodies where spinal meres combine temporarily before passing to the destination points are known as _____. | plexuses |
| The autonomic nervous system operates in a manner that is _____. | involuntary |
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