Across
- 2. ___________ bone is the interior region of bone that contains many tiny holes.
- 6. A ______________ is a type of white blood cell produced by the thymus, spleen and bone marrow.
- 7. Automatic movements in response to a signal are called _________________.
- 9. Steady internal conditions when external conditions change is called _________________.
- 10. _____________ is resistance to specific pathogens or disease-causing events.
Down
- 1. ___________________ is the process by which food is broken down.
- 3. Groups of organs that work together to perform a specific task are called ______________.
- 4. A _________________ is the amount of energy it takes to raise the temperature of 1 kg of water 1 degree Celsius.
- 5. The parts of the food used by the body to grow and survive are called _____________.
- 8. _____________ bone is the hard outer layer of bone.