CENTRAL NERVOUS SYSTEM STIMULANTS CENTRAL NERVOUS SYSTEM STIMULANTS Definition Stimulants are a substance which tends to increase behavioral activity when administered. Primary action of a diverse group of pharmacologic agents – adverse effect associated with many drugs. Signs and symptoms * Elevate Mood * Increase Motor Activity * Increase Alertness * Decrease need for Sleep *In case of overdose lead to convulsion and death. Mode of Action * Block neurotransmitters
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Nervous System Practice Quiz Which ancestral region of the brain is responsible for modern human’s speech and ability to do algebra? -Forebrain It is your turn to do your presentation. You have worried about this moment all month long. Are you prepared? Will someone spot that ring of sweat forming under your arms? Because of the activity of your __________ nervous system‚ ____________. -Sympathetic….epinephrine shoots through your body and your lunch suddenly does not agree with you The corpus
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The inflammatory pathology of the nervous system Any of the etiologic agents of infection may give determinations to the nervous system. Usually these are secondary locations of other infections in the body: infectious diseases‚ endocarditis‚ pulmonary and urinary infections‚ regional inflammations etc. The pathways by which pathogens reach the bodies nervous system are: through blood pressure‚ arteries or veins‚ dissemination of nearby (eg the sinuses‚ internal ear‚ etc..) or through neuronal
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The skeletal system: The bones of the skeletal system hold the body together‚ give it shape and support weight. They also enable the body to move and provide protection to the vital organs. There are four types of bones found in the human body: they are long bones which can be found in the arms‚ legs‚ fingers and toes‚ short bones which are found in the wrist and ankles‚ flat bones such as those in the skull‚ thorax and pelvis‚ irregular bones such as the bones of the vertebral column and face
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The nervous system is the most important system in the body. It transmits impulses to and from the brain. Disruption of the nerve cells and fibers that transmit the messages severely impairs the body’s ability to carry out complex function. Once a disruption occurs‚ one may never recover and neurological function will steadily degrade. Multiple Sclerosis is a disease that disrupts this network. Multiple Sclerosis (MS) is the most common disabling neurological disease in young adults between 20 and
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also helps with the activities in our lives such as remembering and making decisions and learning. 4. Give one example of a neurotransmitter? What is the purpose of this specific neurotransmitter? One example is acetylcholine. It is found in the nervous system and it sends messages relating to our skeletal muscles. Also‚ it helps with the capacity of memory capabilities. 5. Who are neuroscientists? They study the brain and behavior;
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Caffeine is a central nervous system stimulant of the methylxanthine class. It is one of the most worldwide consumed psychoactive substances and it is totally legal. The chemical name of caffeine is 1‚ 3‚ 7 – Trimethylpurine – 2‚ 6‚ - dione. Its molecular formula is C8H10N4O2 and it has a molecular mass of 194.19 g/mole. Caffeine is an odourless‚ white crystalline purine‚ a methylxanthine alkaloid‚ which is closely chemically related to adenine and guanine. Caffeine acts through multiple mechanisms
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behavior.|c.|assumed to exist.| b.|compared with other behavioral forces.|d.|subjectively viewed.| ANS: A DIF: 1 REF: 9-188 OBJ: 1 MSC: TYPE: Conceptual 6. Motives can take the form of a.|needs‚ drives‚ and incentives.|c.|stimuli‚ events‚ and actions.| b.|requirements‚ desires‚ and impulses.|d.|both a and b| ANS: A DIF: 2 REF: 9-188 OBJ: 1 MSC: TYPE: Factual 7. Examples of physiological needs are a.|oxygen‚ food‚ water and proper temperature.| b.|love‚ esteem and finances.| c.|waste elimination
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The action potential is started when the membrane is very slightly ‘depolarised’‚ meaning that the charges inside and outside the cell become more similar. This happens when a stimulus causes a small influx of sodium ions into the cell. For an action potential to occur‚ the voltage has to pass a threshold value of -58mV. at this point‚ in a cycle of positive feedback‚ the action potential will always occur. Once the threshold value has been reached
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different electrode sites. The amplitude and the shape of the signals depend upon the position of the electrodes (Brown‚ 1999) (Conover‚ 1992). The SA node produces the pacemaker potential and if this reaches the threshold then an action potential is generated. There are five stages involved during cardiac action potentials‚ during these stages there is a flow of ions through
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