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explain how the nervous system increases heart rate

Coordination via medulla / cardiac centre in the brainIncreased impulses along sympatheticnerve to the Sino atrial node, otherwise known as pacemakerrelease of noradrenalineincrease in impulses from Sino atr...
EM
Answered by Elsa M. • Biology tutor
2527 Views

Explain how the fetch execute cycle works? Include the specific registers and buses being used

During the fetch stage intitially the address of the next instruction from the program counter(PC) is loaded into the memory address register(MAR). This address is then sent via the address bus to main memor...
TB
Answered by Thomas B. • Computing tutor
4620 Views

How do i figure out if integrals are improper or not and how do i know which limit is undefined?

Improper integrals can take many forms. The first step when dealing with a potentially improper integral is to test the limits of the integral i.e. a and b. If these are at infinity/negative infinity, or the...
HD
5534 Views

What is periodicity?

Periodicity is the trend in chemical and physical properties of the elements across each period of the periodic table.All elements in a period have the same number of shells, all elements in a group have the...
JA
4358 Views

Explain the similarities and differences between the US and UK legislature

The US and UK legislature are similar in that they are split into two parts - the Senate and the House of Representatives in the US, and the House of Lords and House of Commons in the UK . They are also simi...
NM
31363 Views