LEVELS OF ORGANIZATION OF NERVOURS SYSTEM: NEURONS: * STRUCTURE AND FUNCTION: Specialized cell transmitting nerve impulses; a nerve cell. Neurons have specialized projections called dendrites and axons. Dendrites bring information to the cell body and axons take information away from the cell body. Neurons communicate with each other through an electrochemical process. Information is transmitted to the receiving cell at junctions via chemical messengers called neurotransmitters. At this juncture
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sudden hearing loss; chest pain or heavy feeling‚ pain spreading to the arm or shoulder‚ nausea‚ sweating‚ general ill feeling; irregular heartbeat; shortness of breath‚ swelling in your hands or feet; seizure (convulsions); feeling light-headed‚ fainting. Drug Name: Advicor Also called nicotinic acid‚ is a B vitamin (vitamin B3). It occurs naturally in plants and animals‚ and is also added to many foods as a vitamin supplement. Side Effects: headache‚ mild dizziness; diarrhoea‚ mild nausea‚ stomach
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contributes to muscle loss‚ weakness‚ and finally to death (Sandri). 6. These findings will help to define the role of the lysosomal system in muscle homeostasis during physiological or pathological conditions (Sandri). 7. Lysosomes control the half-life of long-lived proteins and the turnover of organelles and therefore‚ are critical for cellular homeostasis (Sandri). 8. Skeletal muscle contraction is a potential source of metabolic‚ mechanical‚ and thermal stressors. Therefore‚ the quality control of
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from the nervous system as well as by chemical receptors in the blood and hormones produced by other glands. By regulating the functions of organs in the body‚ these glands help to maintain the body’s homeostasis. Cellular metabolism‚ reproduction‚ sexual development‚ sugar and mineral homeostasis‚ heart rate‚ and digestion are the few among them that are regulated by the actions of hormones. The reason why the endocrine system is important is because it influences almost every cell‚ organ‚ and
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is increasing‚ and increasing is positive feedback. 13a. A positive feedback loop would be helpful in maintaining homeostasis because it keeps the body at a stable state for example if you were to have breathing‚ you would need and receive positive feedback in order to receive oxygen and not pass out. 13b. A single negative feedback loop would be helpful in maintaining homeostasis because it keeps the body at a stable state for example if you are too hot you would get negative feedback. 14. According
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Characteristics of Life 1. Made of one or more cells 2. Displays growth 3. Grows and develops 4. Reproduces Chapter 1 The Study of Life 1.1 Introduction to Biology The Eight Characteristics of Life 5. Responds to stimuli 6. Requires energy 7. Maintains homeostasis 8. Adaptations evolve over time Chapter 1 The Study of Life Chapter 1 The Study of Life 1.1 Introduction to Biology Living things are made of one or more cells. Cells are the basic unit of structure and function in all living things
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P5-explain the concept of homeostasis P6- follows guidelines to interpret collected data for heart rate‚ breathing rate and temperature before and after a standard period of exercise Homeostasis Conditions in the body have to be controlled with narrow limits. This is called homeostasis. These conditions include water content‚ ion content‚ body temperature and blood glucose concentration. The thermoregulatory centre is the part of the brain that monitors and controls body temperature. The pancreas
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3‚4‚5‚9 are false 1. If you destroy a rat’s ventromedial hypothalamus it will overeat Student Response Value True 100% Score: 2/2 2. If you electrically stimulate a rat’s lateral hypothalamus it will overeat. Student Response Value True 100% Score: 2/2 3. Orexin is released from the adrenal gland and stimulates hunger. Student Response Value True 0% Score: 0/2 4. Sympathetic nervous system activity is different for every emotion. Student Response Value True 0%
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help reverse the narrowing of the airways. Asthma disrupts the body’s ability to function by causing a person’s airways to narrow‚ which leads to difficulty breathing. In essence‚ asthma disrupts homeostasis‚ an internal balance that allows to body to function properly. The disruption of homeostasis occurs in the respiratory system. A normal person’s air pathways are wider and not inflamed‚ which makes it easier for them to breathe and live life. For asthmatics the narrowing of their air
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Homeostasis & Homeostatic Imbalances Deborah Curry Kaplan University Positive & Negative feedback systems Positive feedback system: Strengthens or reinforces a change in one of the body’s controlled conditions. (Tortora & Derrickson‚ 2014‚ p. 10) Negative feedback system: Reverses a change in a controlled condition in the body. (Tortora & Derrickson‚ 2014‚ p. 10) Homeostasis & Homeostatic Imbalances of the Endocrine System The endocrine system makes hormones responsible
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