phylum. 1  Biology. the primary subdivision of a taxonomic kingdom, grouping together all classes of organisms that have the same body plan. 2  Linguistics. a category consisting of language stocks that, because of cognates in vocabulary, are considered likely to be related by common origin. Compare stock (def 13).
There are between 500 and 600 lymph nodes in the average adult human body.
Numbers and Locations in the Body. Though there may be just a few groups of lymph nodes that draw attention like along your neck, under the arm and around the groin; however, there are many more location throughout the body adding up to roughly 500-700 of them.