anatomy 4

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Across
  1. 4. — A division of the autonomic nervous system that conserves energy and promotes normal body maintenance (“rest-and-digest”).
  2. 7. — An organ that filters blood, removes old blood cells, and helps fight infections.
  3. 9. — The outermost layer of skin that protects the body from the environment.
Down
  1. 1. — The voice box that contains the vocal cords and connects the pharynx to the trachea, allowing sound production and passage of air.
  2. 2. — A division of the autonomic nervous system that prepares the body for stressful or emergency situations (“fight-or-flight”).
  3. 3. — The male reproductive cell that fertilizes the egg during reproduction.
  4. 5. — The part of the nervous system that automatically regulates internal body functions such as heart rate, digestion, and breathing.
  5. 6. — A hormone produced by the pancreas that helps cells absorb glucose from the blood, thereby lowering blood sugar levels.
  6. 8. — The part of the nervous system that controls voluntary movements of skeletal muscles and carries sensory information to the brain.
  7. 10. — The female reproductive cell that can develop into a new organism after fertilization.