Fight and Flight Flu and Alzheimer Disease Research Paper (Essay Sample)

FIGHT AND FLIGHT, FLU AND ALZHEIMER DISEASE
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Hungry bear body reaction
In cases of extreme fear and unimaginable queer scenarios like attending a barbeque and all of a sudden we get to notice some movements or rustling of nearby bushes and then at a glance we experience a charging mightily and huge ferocious hungry looking bear .This enormous mammal has smelled our finger licking picnic and wants some of the big share for himself. It’s such a furious and strong enormous creature that can commission our lives just with a single swipe with its mighty powerful forearms. Imagining of this ordeal what pops up into one’s minds is am in big trouble and want to save my life. The immediate thoughts will right be annexed to immediate need to get away from this ferocious animal.
This immediate response or effect of thoughts is what is termed as physiological response that critically and suddenly prepares the body with fats and incredible speed, fight or strength, “fight and flight.” This sudden response involves many complex interactions between organs and various systems in the body. A specific part of the nervous system known as autonomic nervous system will react quickly and responsively to the induce or trigger mechanisms beyond our control. The sympathetic nerve is particularly responsible for initiating fight and flight response at the sight of this ominous animal. This prepares the body to handle danger and pain (Rice, 1992)
Consequently, the hypothalamus commonly called the master gland receives an impulse of impending danger and immediately triggers the adrenal gland releasing the adrenaline and cortisol hormone which prepares the body for fight and flight by servicing the cells with more speed and power in the case of being chased with a hungry bear (Karren, Hafen, Smith & Frandsen, 2002).
Other immediate physiological changes that result from activation of the autonomic nervous system include: Increased heart rate, increased mental activity and central nervous system, increased muscle contraction as well as increased metabolism.
The skin becomes cool and pale, this arises as result of withdrawal of much blood flow to the surface of the body which is greatly reduced and the supply is directed to the legs, arms, shoulders, eyes, brains and the nose. Besides the uncontrollable ability to run and fight the body prepares to think as fast as possible preparing for increased sensitivity to hear, see and smell things in better design than normally. This pulls blood away from the skin which also helps to reduce the bleeding in case of scrapes and cuts.
Also to the eyes, there is increased supply of blood that has been redirected from the skin. This makes the veins and capillaries to have constant and more supply of blood thus making the pupils become more dilated so as to let more light in and consequently improving of sight sense.
Also the upper and lower limb muscles and the skeletal muscles prepares themselves to be injured and spends more energy in the larger muscle groups such as legs and arms as well as shoulders. This comes as a result of diverted supply of blood from the other parts such as the skin so as to accord it with the energy they require for the strenuous muscle contraction and relaxation (Kabat-Zinn, 1990).
Finally, the respiratory system undergoes many complex interactions with the heart and other coordination with the circulatory system. The heart beat increases suddenly, blood is pumped quickly and vigorously to the muscles, eyes and ears. The rate of breathing increases too due to high oxygen demand to breakdown the lactic acid accumulated in the muscles as a result of fatigue.
FLU
Commonly called influenza, it is caused by the RNA virus that infects the respiratory tract of many mammals, birds and even man. The effects of flu on the respiratory tract include the congestion where someone feels to breath with the mouth open as the canals leading to the nose are blocked momentarily due to the contraction of the muscles inside the nose. Coughing arises as a result of this congestion and then one feels dehydrated and takes lots of water to counter this condition. Chest problem, discomfort, and cough might can be severe. Additionally, the nose becomes runny or stuffy with consequent muscle aches and the lack of appetite emerges as a result of sores in the throat which entirely diminish the urge to eat ("Flu, man flu or cold?", 2015)
The skin also becomes pale with goose pimples developing as a result of fever. The sudden increased and declining temperatures are the sole cause of this goose condition. The veins dilate and constrict at times when fever upsurges and goes down. This is brought about by the registration of a signal to the liver and the hypothalamus which dilates and constricts this blood veins under the skin. This fever lasts for 3-5 days
The part of the nervous system highly affected as the release of the cytokines and systemic symptoms such as headache and fever gets their trigger signal from the hypothalamus which is also controlled by the brain. As the cytokines activate the receptors in the brain they induce headache and trip pain in muscles accounting for the higher sensation of the nonspecific muscle soreness and pain ("Flu, man flu or cold?", 2015)
Alzheimer disease
Yes, Jack is an Alzheimer’s patient. Despite the fact that he’s able to live by himself most of the time, the symptoms that Jack presents forth which includes forgetting where he place his car key as well as his next doctor’s appointment qualifies and justifies the whole condition of being Alzheimer. Supporting this approval, most of the patients suffering from this disease are aged from 65 years and above .This disease it’s well documented that is the most common cause of dementia which involves progressive and constant degenera...