central and peripheral nervous systems. Key Terms central nervous system peripheral nervous system Exercises 1. Label each structure as belonging to the (a) central nervous system or (b) peripheral nervous system A. _____ spinal cord B. _____ nerves that carry messages from the brain to the body C. _____ brain D. _____ nerves that carry messages from the body to the brain Objective II.6 Explain the functions of the sympathetic and parasympathetic nervous systems. Key Terms
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the rate of contraction. Autonomic nervous system The heart is controlled by the autonomic nervous system which is two branches called the sympathetic nerves system and the parasympathetic nervous system. The sympathetic nervous system is active when the body is undergoing muscular work such when we are doing exercise‚ like when running or jumping. It causes the increase in the heart rate and strengths the heartbeat. The parasympathetic nervous system calms the heart down and is active when
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range. In this instance the brain and the nervous system help to get our internal environments back to its normal state. An example of this is when an individuals body is too hot and our body begins to sweat in order for us to cool down. Our internal receptors react to make sure that we can return to out normal level. These receptors are needed in the negative feedback loop to help send a message about environmental stimuli to our central nervous system‚ after this our bodies then send signals
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Negative feedback as a form of regulation Feedback control systems This occurs when a n important variable sometimes known as a key variable e.g. pH of blood and tissue fluid‚ deviates from the accepted range from the accepted range or limits which then triggers responses that return the variable to within the ‘normal range’. Deviation produces a negative response to counteract the deviation. An example of a negative feedback system within the body is the liver when blood glucose levels fall
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body cell contents and all metabolic processes taking place inside the body. This process is essential to the survival of a person and to our species as a whole. The liver‚ the kidneys‚ and the brain (hypothalamus‚ the autonomic nervous system and the endocrine system) help maintain homeostasis. An inability to maintain homeostasis may lead to death or a disease‚ for example diseases that can occur due to the result of a homeostatic imbalance include diabetes‚ dehydration‚ hypoglycaemia‚ gout and
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1 Chapter 1 INTRODUCTION Alcohol drinking has been practiced in the majority of human society since early times. Alcohol (ethyl alcohol) is a drug which acts principally as a depressant on central nervous system. Its effects on behavior are well known and regular use gives rise to an increased tolerance‚ so that the drinker needs to take gradually increasing amounts to obtain the same effect. Chronic excessive alcohol consumption leads to life threatening hazards (Best‚ 1999). Alcohol related diseases
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1. Kent and Jebreel both ask Danielle out on a date. Kent is very attractive and a lot of fun to be with‚ but he’s also employed. Jebreel is older than Kent‚ has a secure job‚ and owns his own home; however‚ Jebreel is quite unattractive and not very much fun. Daniel chooses to go out with Jebreel instead of Kent. The ______ theory of motivation would best predict Daniel’s choice. Concept tested: Theory’s of motivation Page 399: Instinct theory is motivation based off of inherent automatic
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0.07 Mindfulness Correct 0.07 Playfulness Correct 0.07 Fear Correct 0.07 Obedience Correct 0.07 Hope‚ purpose or vision Correct 0.07 Compassion Correct 0.07 Total 0.50 / 0.50 Question 4 Activating the Parasympathetic Nervous System engages renewal in what ways? Select all that apply. Your Answer Score Explanation Activates the prefrontal cortex and decreases blood
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emergencies? The answer lies in the Sympathetic Nervous System (SNS). It is the branch of the Autonomic Nervous System (ANS) that controls the body’s reaction to physical and emotional stressors. The sympathetic branch activates the glands and organs that defend the body against attack. It is called the fight-or-flight response. This is a primitive response designed to protect from danger. When danger is perceived‚ the sympathetic nervous system responds immediately to prepare a person to stay
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and lower extremities then back to the center (heart) again. I. CIRCULATORY SYSTEM the main transportation and cooling system of the body. responsible for transporting materials throughout the entire body. It transports nutrients‚ water‚ and oxygen to your billions of body cells and carries away wastes such as carbon dioxide that body cells produce. fluid distribution network PARTS OF THE CIRCULATORY SYSTEM: The Heart‚ The Blood‚ and The Blood vessels. HEART Heart weighs between
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