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Describe the structure and function of the myelin sheath?

The myelin sheath is a fatty substance which surrounds and insulates neuron axons (i.e. it does not allow potassium or sodium ions to pass through it), which allows fast propagation of action potentials alon...
EC
Answered by Emma C. • Biology tutor
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Distinguish the mens rea element of a crime from the actus reus element.

The mens rea requirement of a crime is the mental element part. For example, having the intention or knowledge of the wrongdoing. Differently, the actus reus element is the conduct part of the crime, for exa...
AP
Answered by Abi P. • Law tutor
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Vectors a and b are defined by a = 2i + 3j and b = 4i - 2j, find 3a-b in terms of i and j

3a = 6i + 9j -b = -4i + 2j 3a-b = (6i-4i) + (9j+2j) = 2i + 11j
PM
Answered by Pearse M. • Maths tutor
8030 Views

Find ∫(4x - 2/(x^3)) dx

Using the integer rule 1/ (x n ) = x -n question becomes ∫(4x - 2(x -3 )) dx Then using the formula ∫x n dx = (x n+1 )/n+1 and assuming there may be an integer value (+c) the answer is 2(x 2 ) + x -2 + c
PM
Answered by Pearse M. • Maths tutor
4840 Views

What is a synapse in the nervous system?

A synapse is a junction between two neurones where they meet. It is a very small gap which chemicals diffuse across so the signal can transmit to or from the CNS. would draw diagram to demonstrate this
MF
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