StudentShare solutions
Triangle menu

Automatic Nervous System - Essay Example

Not dowloaded yet

Extract of sample
Automatic Nervous System

This is called orthostatic hypotension. Blood pools in the lower extremities and lesser blood reaches the brain (Marieb, 2006). Consequently, increased environmental temperature causes vasodilatation in the skin that further shunts more blood away from the brain. The manifestations of the decreased blood supply in the brain that include dizziness and fainting pose risk of injury to this vulnerable population. Thus, safety considerations should be taken by making sure that the environmental temperature is not too warm, and instructing the elderly to waggle the feet first before arising and avoiding sudden changes in position as much as possible. On the other hand, when the sympathetic vasoconstriction is exaggerated, the blood pressure remains high that results into hypertension. Normally, the autonomic nervous system maintains the balance of sympathetic and parasympathetic activity (Marieb, 2006). When the balancing mechanism is impaired for a long time due to electrolyte imbalance, underlying acute and chronic condition, and overall cardiovascular pathology, the walls of arteries and veins become thickened to withstand the increased pressure. Thus, baroreceptors are reset to maintain higher blood pressure causing hypertension (McCance & Huether, 2004). This can be controlled while taking anti- hypertensive maintenance medications. Explicitly, the age- related changes in the autonomic nervous system ultimately affects other body systems. 2. A patient suffers nerve damage to the sciatic nerve, requiring surgery to suture the nerve together. After surgery, the patient reports that sensation from the lateral and medial sides of the knee seem to be reversed. How could this happen? Surgery of the sciatic nerve is almost a “blind” procedure because there is no actual guide that one end of a nerve fiber connects to its exact other end. Nerve fibers do not necessarily follow a straight single path (McCance & Huether, 2004). Their naturally complex branches are difficult to follow to regain the original connections. Thus, there is a high tendency that new synapses are built along the process and that the brain cannot adhere to the new pattern. Thus, sensations from either side of the knee, as in this case, can be reversed. However, there are certain nerves which are difficult to repair when damaged. For instance, when the ventral root of the gray matter of the spinal cord is injured, the innervated muscles cannot move, a condition called flaccid paralysis. Motor impulses cannot reach their target muscle groups to cause movement. As the muscles become unused for a long period of time, they decrease in mass and eventually atrophy (Marieb, 2006). References Marieb, E.N. (2006). Essentials of human anatomy and physiology (8th ed). Singapore: Pearson Education, Inc. McCance, K.L. & Huether, S.E. (2004). Understanding pathophysiology (3rd ed). St. Louis: ...Show more

Summary

1. An elderly patient in a nursing home has recurrent episodes of fainting when he stands. An alert nurse notices that the fainting occurs only when his room is fairly warm; however, on cold mornings, he has no difficulty. What is the cause of the fainting and how does it relate to the autonomic nervous system and room temperature?…
Author : urielblanda
Automatic Nervous System essay example
Read Text Preview
Save Your Time for More Important Things
Let us write or edit the essay on your topic
"Automatic Nervous System"
with a personal 20% discount.
Grab the best paper

Related Essays

Nervous system
353). The cuticle is 5µm thick in young larvae (36 hours, first instar), 25µm in 60-hour-old larvae (second instar), and 40µm in last (third) instar larvae. Maggot behavior is linked to instar development; for example, in the first and second instar the maggots stay close together and feed, but in the third instar, they move away from each other and seek a safe placement for pupal development to occur.
3 pages (750 words) Essay
The Autonomic Nervous System
Therefore, the autonomic nervous system controls the involuntary activities of the smooth muscles and several undertakings o the glands. It forms a component of the peripheral nervous system and can be subdivided into two categories. These include the sympathetic and parasympathetic nervous system. In all these categories are comprised of effector neurons which connect the central nervous system top their effector organs.
7 pages (1750 words) Essay
Emotional Models Comparison
Lastly the circumplex model of emotion is discussed. Emotion, even though it is a word in normal use, academics do not easily agree on a generally accepted definition for emotion. But there is a growing agreement that there is a distinct difference between feeling and emotion.
2 pages (500 words) Essay
Automatic Number Plate Recognition System
These breakthroughs in communication technologies enabled a manner of data exchange that is beyond the strict dissemination control by the primary data provider. One way or the other, such technological breakthroughs may have significantly fueled issues on individual privacy violations that resulted to the formation of relevant laws.
6 pages (1500 words) Essay
Discuss the Nervous system in human and how it affects the behaviour of human
He tried to find ways to organize the disorder prevailing in the observed facts about the natural phenomena and material things in an orderly manner. The machine which works in achieving all this successful goals of
4 pages (1000 words) Essay
The Sensory Nervous System
The central nervous system comprises of the brain and the spinal cord, whereas the peripheral nervous system includes the spinal nerves and cranial nerves. The PNS essentially acts as a channel to relay sensory impulses
2 pages (500 words) Essay
Autonomic Nervous System
The nervous system exists in our body to regulate the involuntary actions like heart beat and breathing by transmitting motor impulses to the organs responsible for carrying out those
1 pages (250 words) Essay
Human Nervous System
As the author of the essay puts it, the Central Nervous System form the major portion of the nervous system and includes both the brain as well as the spinal cord. Furthermore, some classifications of the Central Nervous System also include retina and the cranial nerves as part of the Central Nervous System.
5 pages (1250 words) Essay
Nervous System Research
The cortical columns or modules are usually more in mammals than they are in invertebrate nervous system where they are compartmentalized during construction. In most cases, during
4 pages (1000 words) Essay
Logbook
In the last scenario, the paper shall examine a player whose social standing among his peers is limiting him to attain his full potential in the rugby pitch. In this scenario Mario Ballotelli
5 pages (1250 words) Essay
Get a custom paper written
by a pro under your requirements!
Win a special DISCOUNT!
Put in your e-mail and click the button with your lucky finger
Your email
YOUR PRIZE:
Apply my DISCOUNT
Comments (0)
Rate this paper:
Thank you! Your comment has been sent and will be posted after moderation