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13. Reflexes Arc /Coordinated response and heart rate

13-reflexes-arc-coordinated-response-and-heart-rate

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The reflex arc pathway

To produce fast responses the impluses are sended to spinal cord intesd of the brain. Sensory receptors- sensory neurones- relay neurones(cns)- motor neurones - effectors.

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Define Fight or Flight response?

The sympathetic branch and hormonal communication eorks togueter.

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{"id":1809718,"question_id":"409621","created_at":"2018-03-16 10:53:38","updated_at":"2018-03-16 10:53:38","answerTitle":"The sympathetic branch and hormonal communication eorks togueter.\n","isAnswerCorrect":"1","isAnswerBlank":null,"isInSecondMatchingColumn":null,"sequenceOrder":null,"lang":null,"type":0}

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How adrenaline works?

Adrenaline is a non-steroid hormone. 1-The adrenaline bind to cell surface recptor. 2-Activates adenylyl cyclase(enzyme) that conversts ATP to cAMP(secondary messager). 3-cAMP activates protein kinases, which activates other enzymes.(cascade effect).

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What cardiovascular centre contorls medulla oblongata?

The Medulla oblongata

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{"id":1809720,"question_id":"409623","created_at":"2018-03-16 10:53:38","updated_at":"2018-03-16 10:53:38","answerTitle":"The Medulla oblongata","isAnswerCorrect":"1","isAnswerBlank":null,"isInSecondMatchingColumn":null,"sequenceOrder":null,"lang":null,"type":0}

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How chages are initeated by the medulla oblongata?

See table yahhh

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{"id":1809721,"question_id":"409624","created_at":"2018-03-16 10:53:39","updated_at":"2018-03-16 10:53:39","answerTitle":"See table yahhh","isAnswerCorrect":"1","isAnswerBlank":null,"isInSecondMatchingColumn":null,"sequenceOrder":null,"lang":null,"type":0}

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What is accelarator nerve and a vagus nerve?

A accelarator nerve connect the symphathetic to the efgector, while the vagus nerve connect the parasymphathetic nerve to the effector.

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Role of the recptors of medulla oblongata?

Co2 = basic

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{"id":1809723,"question_id":"409626","created_at":"2018-03-16 10:53:39","updated_at":"2018-03-16 10:53:39","answerTitle":"Co2 = basic","isAnswerCorrect":"1","isAnswerBlank":null,"isInSecondMatchingColumn":null,"sequenceOrder":null,"lang":null,"type":0}

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Role of adrenaline in the heart rate?

Adrenaline and nonadrenaline increase heart rate by binding to cardiac cells.Incresing the frequency of impluses generated by the SAN.

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