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What are the major parts of a neuron? What are the three types of nerve cells?

1) The nerve cell , also referred to as a neuron , has several parts that are important for its function in the nervous system. These parts are: Soma - or a nerve cell body, contains nucleus and other organe...
ZB
35100 Views

What is Cystic Fibrosis? Explain the mechanism behind this disease.

Cystic fibrosis (CF) is an autosomal recessive genetic condition most commonly caused by the deltaF508 mutation in the CFTR (Cystic Fibrosis Transmembrane Regulator) gene . This disease is characterised by d...
JB
5316 Views

How do muscle fibres contract?

Contraction occurs when an impulse from a motor neurone reaches the synapse at the junction with the muscle, the neuromuscular junction (NMJ). At the presynaptic membrane of the NMJ, depolarisation results i...
EB
Answered by Emily B. • Biology tutor
4512 Views

Let R denote the region bounded by the curve y=x^3 and the lines x=0 and x=4. Find the volume generated when R is rotated 360 degrees about the x axis.

The area of a circle is given by (pi)r 2 and the area generated by R can be considered as an infinite number of circular areas. Thus, we can write the area generated by R as the integral of (pi)(x 3 ) 2 betw...
SB
Answered by Stephen B. • Maths tutor
5902 Views

Does the equation: x^2+5x-6 have two real roots? If so what are they?

Having two real roots is equivalent to having two intersections with the x axis. The equation is a parabola (a U shape) so, having two real roots is equivalent to having the lowest point of the curve below t...
SB
Answered by Stephen B. • Maths tutor
5768 Views