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The ornate red lionfish as seen from a head-on view
Muscles of Head and Neck Back
A cylinder head with four valves per cylinder, two intake valves (larger) and two exhaust valves ...
Pinch the sternocleidomastoid (SCM) muscle at points along its length. Turn head to side to expose ...
Lymph nodes of the head and neck
Electron configuration and how many electrons are needed to achieve the nearest noble-gas ...