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.
We're sorry, an error occurred. The body has about 20 to 40 bean-shaped axillary lymph nodes located in the underarm area. These lymph nodes are responsible for draining lymph â a clear or white fluid made up of white blood cells â from the breasts and surrounding areas, including the neck, the upper arms, and the underarm area.