Answer: The correct answer is (D) Both A and B
Explanation:
When an axon is depolarized at halfway to the threshold level,the action potential will be generated that would travel 'downstream' i.e towards the synapse and 'upstream' i.e back towards the cell body. This is because both channels on either sides are not under refractory period,i.e they are open.
The lymphatic system helps maintain fluid balance in the body by collecting excess fluid and particulate matter from tissues and depositing them in the bloodstream. It also helps defend the body against infection by supplying disease-fighting cells called lymphocytes.
~Hello there!
Your question: What 19th century major development came about as a result of physicians’ understanding that microorganisms caused disease?
Your answer: Infection control was the 19th century development that came about as a result of physicians' understanding that microorganisms caused diseases.
Any queries ^?
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1. C.
2.D.
3.I.
4.G.
5.J.
6.H.
7. J.
8.E.
9.J.
10.E.
11.F.
12.K.
13. G.
14.B.
15.H.
I'm not sure if all Letters had to be used. But I tried my best, sorry if some are wrong.
