This printable word search puzzle on the topic of Human Body Systems contains 18 hidden words in a 24x24 letter grid. Words go horizontally, vertically, backwards, and diagonally. This word search is also available to download as a Microsoft Word document or a PDF.
neurotransmitter
pituitary gland
sensory neuron
reflex action
motor neuron
spinal cord
peripheral
endocrine
pancreas
receptor
synapse
adrenal
thyroid
impulse
hormone
brain
nerve
axon