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58 terms

Nervous System

Leitner
STUDY
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Somatic Nervous System
Provide voluntary control of skeletal muscles
Schwann Cell
Glial cell of the PNS (peripheral NS)
Directing activities that continue for extended periods such as growth and pregnancy
Each of the following is a function of the nervous system except for one. Identify the EXEPTION
•Providing Sensation of the internal and external environments
•Integrating voluntary and involuntary processing
•Coordination voluntary and involuntary activities

•Regulation or controlling peripheral structure and systems
Information processing
Which of the following is NOT a function of the neuralgia?
•Support

•Secretion of cerebrospinal fluid
•Phagocytosis
•Isolation of neurons
Microglia
Small phagocytes cells that are especially obvious in damaged tissue in the CNS
Neurons
Cells responsible for information processing and transfer
Axon Terminals /Knobs
Neurotransmitters are released from here
Astrocytes
The Glial cells are responsible for maintaining the blood-brain barrier
Saltatory Conduction
Action potential occurs at successive nodes along the length of the stimulated axon
Precentral Gyrus
Location of primary motor cortex
Cerebrum
The region the brain that is involved in conscious thoughts and intellectual functions as well as processing somatic sensory and motor information
Corpus Callosum
The major communication between cerebral hemispheres occur though
Cerebellum
Oversees the postural muscles of the body and making rapid adjustments to maintain balance and equilibrium (coordination)
Right Parietal Lobe
After suffering a stroke, Cindy finds that she cannot feel her left arm. This would be a suggestion that the stroke damage is in the area of the__________
Sensory neurons from each body region synapse in specific brain regions
We can distinguish between sensations that originate in different areas of the body because
Number of sensory receptors in the area of the body
The area of sensory cortex devoted to a body region is relative to ______
Brain and Spinal Cord
The term CENTRAL NERVOUS SYSTEM refers to the:
Association Neuron
A neuron with a cell body located in the CNS whose primary function is connection other neurons is called____________
Dendrites
Receive incoming stimuli
Synapse
The point at which an impulse from one nerve cell is communicated to another nerve cell is called:
Effectors
In a reflex arc, muscles and glands are:
Sulcus
The shallow groove located on the surface of the cerebral cortex is called:
Longitudinal Fissure
the single, deep grove located on the surface of the cerebral cortex is called:
Medulla Oblongata
The vital center for the control of visceral activities such as heart rate, breathing, blood pressure, swallowing, and vomiting are located in the :
Automatic Nervous System
The sympathetic and parasympathetic nervous systems are subdivisions of the:
Sympathetic Nervous System
Preparing the body for the "fight-to-fight" response during threatening situations is the role of the:
Arbor Vitae
White matter in the cerebellum
Oligodendrocytes
Schwann Cells are functionally similar to _________
Sodium-Potassium pump
Pumps 3 sodium ions outside the cell and 2 potassium ions inside
Broca
Is considered a motor speech area
Lobes
Divisions of the central hemisphere that are named after the overlying skull bones
Reduction in brain size and weight
Changes in the CNS that accompany aging include
Vestibulocochlear
Problems in balance of hearing may follow trauma in which nerve?
Ependymal Cells
Ciliated CNS neuroglia that line the cavities of the brain and spinal cord and play an active role in moving the cerebrospinal fluid
Hyothalamus
Control of temperature, endocrine activity, metabolism, and thirst are functions associated wit the :
Metabolic waste such as urea
The blood-brain barrier is effective against the passage of
Sensory Nerves
Afferent nerves are called___________
Efferent nerves
Motor nerves are called_____________
Skeletal Muscle
Which effectors is NOT directly controlled by the autonomic nervous system:
Concussion
Mildest consequence of traumatic brain injury
Reticular Formation
The brain are that regulates activities that control the state of wakefulness or alertness of the cerebral cortex is the
Dura mater
The outer most meninges covering the brain or spinal cord is the______
Trigeminal
The cranial nerve that has three branches
A Cerbrovascular accident ( CVA)
The prefrontal lobes is damaged during
All sodium gates are closed
A second nerve impulse CANNOT be generated until_____________
Receptor, Afferent Neuron, Neuron, Integration Center ( Interneuron), efferent neuron, effecter
Correct Sequence in a typical reflex?
Myelinated Nerve Fiber
Gray, and composes the gray matter of the brain and spinal cord
Unmyelinated Nerve Fiber
White, composes the gray matter of the brain and spinal cord
Polarized
The concentration of sodium ions is higher on the outside of its membrane and potassium is higher of the membrane when the nerve fiber is_________
Nodes of Ranvier
The gaps between Schwann Cells are found at regular intervals in peripheral system neurons called______
CVA
The brain dysfunction where blood supply to a region ( or regions) of the brain is blocked and vital brain tissue dies, as by a blood clot of rupture blood vessel is called
Contusion
A traumatic injury that destroys brain tissue is called
Concussion
A slight and transient brain injury is called _____
Hypothalamus
One of the last CNS areas to mature, which contains the temperature regulating center and accounts for why premature infants have difficulty controlling body heat loss
2,1,5,3,4
What is the correct sequence of events that follow a threshold potential:
1. The membrane becomes depolarized
2.Sodium channels open and sodium ions diffuse inward
3. The membrane becomes Repolorized
4.Active transports move sodium ions out of the cell and potassium ions into the cell
5. Potassium channels open and the potassium ions diffuse outward
The heart rate when sympathetic neurons are stimulated
Which of the following would be greater?
-The heart rate when parasympathetic neurons are stimulated
-The heart rate when sympathetic neurons are stimulated
Myelinated Fiber
In which of the following would the rate of impulse conduction be greater?
-Myelinated Fiber
-A nonmyelinated Fiber
continuous conduction
Local currents depolarize adjacent areas of the membrane so that action potentials continue to form along membrane