Wrong ANS Flashcards by Shreya R

Q

Suggest how adrenaline brings about a response inside the cells of the SAN (2)

A

adrenaline binds to protein receptors on the CELL SURFACE MEMBRANE of SAN cells
activates adenylyl cyclase which converts ATP –> cAMP/secondary messenger and results in depolarisation of SAN cell membrane

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Q

Describe the structure of myelin sheath (2)

A

Schwann cell wrapped around neurone
present on neurone except at nodes of Ranvier

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