# Lymph Nodes On Back Of Head Diagram

luxury lymph nodes on back of head diagram for lymph nodes in neck diagram pleasant and swollen lymph glands in the neck of lymph 57 label the diagram major lymph nodes head neck and body.

beautiful lymph nodes on back of head diagram and lymph node diagram of body back lymph nodes back of head diagram 99 lymph node locations diagram head.

idea lymph nodes on back of head diagram for number of lymph nodes in human body neck glands anatomy diagram animal cell lymph nodes 44 lymph node diagram head and neck.

lovely lymph nodes on back of head diagram and enlarge stage ii childhood lymphoma drawing shows cancer in lymph node groups above and below 65 lymph node diagram head.

lovely lymph nodes on back of head diagram or 12 lymph node diagram head.

awesome lymph nodes on back of head diagram for stage ii an invasive tumor with no spread to lymph nodes or distant metastasis 38 label the diagram major lymph nodes head neck and body.

awesome lymph nodes on back of head diagram for diagram of back of head unique anatomy the back head and neck nerves from head to 54 lymph node locations diagram head.

lymph nodes on back of head diagram and chest lymph nodes lung nodes 45 lymph node diagram head.

elegant lymph nodes on back of head diagram or anatomy of skull behind ear lymph nodes diagram node back head 21 lymph node diagram head and neck.

fresh lymph nodes on back of head diagram or large size of lymph node levels radiology case org chart of head neck chest 26 lymph node diagram head.

lymph nodes on back of head diagram for head and neck cancers gov head pain diagram head and neck anatomy 25 lymph node diagram head.

beautiful lymph nodes on back of head diagram or label the diagram major lymph nodes head and neck related post of in label the diagram major lymph nodes head 92 lymph node diagram head and neck.

beautiful lymph nodes on back of head diagram for and lymph nodes of the neck preview human 25 lymph nodes back of head diagram.

elegant lymph nodes on back of head diagram or human lymphatic system computer artwork stock photo premium royalty free code 38 lymph nodes back of head diagram.

lovely lymph nodes on back of head diagram or lymph node locations diagram location nodes of in head lymph node system diagram 77 lymph nodes head diagram.

elegant lymph nodes on back of head diagram and lymphatic system 55 lymph node diagram head and neck.

unique lymph nodes on back of head diagram and oncology massage touch caring and cancer lymph node diagram 58 lymph nodes head diagram.

lymph nodes on back of head diagram for label the diagram major lymph nodes head neck and body on back of 96 lymph node locations diagram head.

new lymph nodes on back of head diagram for leg lymph nodes rear 54 lymph node locations diagram head.

lovely lymph nodes on back of head diagram for posterior cervical lymph nodes diagram astonishing lymph nodes in back neck of posterior cervical lymph nodes 75 lymph nodes back of head diagram.

awesome lymph nodes on back of head diagram or anatomy human head nerves 48 label the diagram major lymph nodes head neck and body.

good lymph nodes on back of head diagram and lymph drainage of the head 94 lymph nodes back of head diagram.

The structure of this humble diagram was formally developed by the mathematician John Venn, but its roots go back as far as the 13th Century, and includes many stages of evolution dictated by a number of noted logicians and philosophers. The earliest indications of similar diagram theory came from the writer Ramon Llull, whos initial work would later inspire the German polymath Leibnez. Leibnez was exploring early ideas regarding computational sciences and diagrammatic reasoning, using a style of diagram that would eventually be formalized by another famous mathematician. This was Leonhard Euler, the creator of the Euler diagram.

A Venn diagram, sometimes referred to as a set diagram, is a diagramming style used to show all the possible logical relations between a finite amount of sets. In mathematical terms, a set is a collection of distinct objects gathered together into a group, which can then itself be termed as a single object. Venn diagrams represent these objects on a page as circles or ellipses, and their placement in relation to each other describes the relationships between them. Commonly a Venn diagram will compare two sets with each other. In such a case, two circles will be used to represent the two sets, and they are placed on the page in such a way as that there is an overlap between them. This overlap, known as the intersection, represents the connection between sets - if for example the sets are mammals and sea life, then the intersection will be marine mammals, e.g. dolphins or whales. Each set is taken to contain every instance possible of its class; everything outside the union of sets (union is the term for the combined scope of all sets and intersections) is implicitly not any of those things - not a mammal, does not live underwater, etc.

Usage for Venn diagrams has evolved somewhat since their inception. Both Euler and Venn diagrams were used to logically and visually frame a philosophical concept, taking phrases such as some of x is y, all of y is z and condensing that information into a diagram that can be summarized at a glance. They are used in, and indeed were formed as an extension of, set theory - a branch of mathematical logic that can describe objects relations through algebraic equation. Now the Venn diagram is so ubiquitous and well ingrained a concept that you can see its use far outside mathematical confines. The form is so recognizable that it can shown through mediums such as advertising or news broadcast and the meaning will immediately be understood. They are used extensively in teaching environments - their generic functionality can apply to any subject and focus on my facet of it. Whether creating a business presentation, collating marketing data, or just visualizing a strategic concept, the Venn diagram is a quick, functional, and effective way of exploring logical relationships within a context.

Euler diagrams are similar to Venn diagrams, in that both compare distinct sets using logical connections. Where they differ is that a Venn diagram is bound to show every possible intersection between sets, whether objects fall into that class or not; a Euler diagram only shows actually possible intersections within the given context. Sets can exist entirely within another, termed as a subset, or as a separate circle on the page without any connections - this is known as a disjoint. Furthering the example outlined previously, if a new set was introduced - birds - this would be shown as a circle entirely within the confines of the mammals set (but not overlapping sea life). A fourth set of trees would be a disjoint - a circle without any connections or intersections.

Logician John Venn developed the Venn diagram in complement to Eulers concept. His diagram rules were more rigid than Eulers - each set must show its connection with all other sets within the union, even if no objects fall into this category. This is why Venn diagrams often only contain 2 or 3 sets, any more and the diagram can lose its symmetry and become overly complex. Venn made allowances for this by trading circles for ellipses and arcs, ensuring all connections are accounted for whilst maintaining the aesthetic of the diagram.