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In humans, the activation of sympathetic...

In humans, the activation of sympathetic nervous system stimulates the adrenal medulla to release certain hormones that help in fight and fight response. A similar type of response in plants can be given by

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Consider the following statements sympathetic nervous system is characterised by 1. Acetylcholine as neuro secretion 2. Fight of flight activities 3. Longer preganglionic fibres 4. Non-medullated postganglionic fibres 5. Arising from thoracic-lumbar portion

Consider the following statements sympathetic nervous system is characterised by 1. Acetylcholine as neuro secretion 2. Fight of flight activities 3. Longer preganglionic fibres 4. Non-medullated postganglionic fibres 5. Arising from thoracic-lumbar portion

Consider the following statements sympathetic nervous system is characterised by 1. Acetylcholine as neuro secretion 2. Fight of flight activities 3. Longer preganglionic fibres 4. Non-medullated postganglionic fibres 5. Arising from thoracic-lumbar portion

Consider the following statements sympathetic nervous system is characterised by 1. Acetylcholine as neuro secretion 2. Fight of flight activities 3. Longer preganglionic fibres 4. Non-medullated postganglionic fibres 5. Arising from thoracic-lumbar portion a. 1, 2 and 3 b. 2, 4, and 5 c. 2 and 4 d. 1, 3 and 5

P.Normal activities of the heart are regulated extrinsically i. e auto regulated by specialized muscles. Q. A special neural center in the medulla oblongata can moderate the cardiac function through the autonomic nervous function ( ANS) . R. Parasympathetic mental signals decrease the rate of heartbeat. S. Adrenal medullary hormones increase cardiac output. How many of the given statements are incorrect about the regulation of cardiac activities ?

P.Normal activities of the heart are regulated extrinsically i. e auto regulated by specialized muscles. Q. A special neural center in the medulla oblongata can moderate the cardiac function through the autonomic nervous function ( ANS) . R. Parasympathetic mental signals decrease the rate of heartbeat. S. Adrenal medullary hormones increase cardiac output. How many of the given statements are incorrect about the regulation of cardiac activities ?

Fill up the blanks in the following paragraph by selecting the correct option. Human beings have a significant ability to maintain and moderate the respiratory rhythm to suti the demands of the body tissues. This is done by the neural system. A specialised centre present in the medulla region of the brain called overset((i))"_______" is primarily responsible for this regulation. Another centre present in the pons region of the brain called overset((ii))"_______" can moderate the functions of the repiratory rhytm cenre. Neutral signal from this cenre cen reduce the duration of overset((iii))"_______" and thereby alter the respiratory rate. A overset((iv))"_______" is situated adjacent to the rhythm centre which is highly sensitive to CO_(2) and hydrogen ions.