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

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.