Examlex
________ is considered the first messenger,while ________ is called the second messenger.
Lumbar
Relating to the lower part of the back or the lower spine between the thoracic spine and the sacral region.
Iliac
Pertaining to the ilium, the largest bone of the pelvis.
Hypogastric
Relating to the lower middle region of the abdomen, beneath the umbilical region.
Epithelial
Pertaining to the epithelium, a layer of cells covering the body surfaces, lining cavities and organs, and forming glands.
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