The brain develops very quickly 75% by age 2. Describe the brain’s communication system and all of the individual parts associated with this. Neuron‚ axon dendrite‚ synapse‚ neurotransmitter and receptor. Also include transient exuberance. Neuron consists of a cell body and branching fibers. Neurons can communicate by firing chemical or electrical signals. It is excitable and can transmit and process information through electrical and chemical signals. Those signals occur in synapses. Synapses are
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Body Systems of Various Organisms All organisms in the world have a range of systems and organs in their body. Some organisms may share similar body systems while others have absolutely nothing in common. Several of those organisms include humans‚ pigs‚ crayfish‚ and earthworms. From their mushy‚ gushy organs to their soft‚ gentle skin‚ you may think‚ “How are humans and pigs possibly alike? Or a crayfish and an earthworm?” In many ways they may not be‚ but in other ways‚ they are very much alike
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Managing Stress: Coping with Life’s Challenges and Preventing Violence and Abuse: Creating Healthy Environments Multiple choice 1) Stressors that present the opportunity for personal growth and satisfaction are called: eustress Opportunistic stressors distress Negative coping mechanisms 2) Which of the following stress management techniques requires sitting quietly for 15 to 20 minutes and controlling your breathing. meditation Biofeedback hypnosis. deep-muscle relaxation.
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perception may be realistic but it may also be unrealistic. What matters is the individuals’ own evaluation of the situation‚ and this has an impact on the way that person confronts the stressful situation. The physiological changes of the sympathetic nervous system prepare the individual to either confront or escape from the source of stress “fight or flight” (Cannon 1914). The body’s stress response is arousal for example‚ increased blood pressure and providing glucose to the muscles. The adrenal
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response? Sympathetic nervous system The "fight or flight response" is our body’s automatic response that prepares the body to "fight or flight" from perceived attack‚ harm or threat to ourselves. This response is something we are born with and has been in our systems for as long as humans have been alive. This "fight or flight" response happens when the internal or external stress activates the sympathetic nervous system and the adrenal-cortical system. The effects of the two systems are the "fight
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measures the force created by the heart beat (blood) on the walls of blood vessels. The blood pressure can show an increase with age due to lack of elasticity and narrowing of arteries. The regulatory centers of cardiac and vasomotor controls the sympathetic neuron to increase the blood pressure with regard to increase in blood volume. These regulating centers are located in the medulla oblongata show vasoconstriction while increasing heart rate. When the heart beat increases the amount of blood entering
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Aging in the brain is a complex process that involves several systems and structures. Normal aging not only shows a decreased activity in neurotransmission‚ but also is a major risk factor for the development of neurodegenerative diseases. Dysfunction of the central noradrenergic and dopaminergic systems is one of the biological characteristics of aging‚ which may contribute to changes in cognitive and motor functions in aged persons. Furthermore‚ aging-dependent norepinephrine (NE) loss occurs earlier
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Two biological processes which control our stress response involve the hypothalamus and the autonomic nervous system. When a human is under threat‚ the sympathetic branch of the automatic nervous system becomes active and sends a signal to the adrenal medulla. Similarly‚ when the body is no longer under threat‚ the parasympathetic branch sends the body into a more relaxed state. Therefore‚ the human body will automatically react when the body is under threat or stressed and then help itself go back
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The Limbic System Most reptiles and lower order organisms only have the “old brain”‚ the evolutionarily oldest part of the brain responsible for vital tasks such as breathing and sleeping‚ whereas higher order organisms have a limbic system. The old brain is comprised of the pons‚ the medulla oblongata‚ the brain stem‚ the thalamus‚ the cerebellum‚ and the reticular formation. The reticular formation is a network inside of the brain stem‚ part of the “old brain” that is essential for arousal (sleeping
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internal processes are stable and constant. Your body uses the sympathetic nervous system to help deal stress and stressful situations. The nervous system is arranged with a fight or flight response‚ also called the acute stress response‚ to increase your ability to survive when in danger. The response is provoked instinctively in reaction to a recognized threat survival than to motivate consciously or by choice‚ and alters your body’s systems to ready you to either to fight the danger or to avoid by
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