Biology

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Across
  1. 4. Is the junction between a neuron and another cell
  2. 8. Longest bone in the human body
  3. 9. Cells that contain a true nucleus and membrane bound organelles
  4. 14. Cells with no true nucleus and no membrane bound organelles
  5. 16. Acts as a relay center connecting the cerebrum and cerebellum to the spinal cord.
  6. 17. Is located behind the third ventricle. It helps regulate the body’s internal clock and circadian rhythms by secreting melatonin
  7. 18. All living things are made up of this.
  8. 20. A tough, flexible band made of fibrous connective tissue, and functions to connect muscle to bone.
  9. 21. Long protein filaments in the cytosol that support the cell.
  10. 22. Protects the brain that is contained in the cranial vault. Also known as skull.
  11. 23. This gland produces insulin
  12. 26. Is the largest part of the brain and is composed of right and left hemispheres.
  13. 27. Connect the ends of bones together in order to form a joint.
  14. 29. Is composed of the cerebrum, cerebellum, and brainstem. Protected by the skull
  15. 30. Female reproductive organ. Produces estrogen and progesterone
Down
  1. 1. Are bundles of axons in the peripheral nervous system (PNS) that act as information highways to carry signals between the brain and spinal cord and the rest of the body.
  2. 2. This gland produces parathyroid hormones
  3. 3. Adrenal gland produces what hormones
  4. 5. Lies in a small pocket of bone at the skull base called the sella turcica. Known as the master gland.
  5. 6. Is located under the cerebrum. Its function is to coordinate muscle movements, maintain posture, and balance.
  6. 7. Are the bone articulations allowing movement
  7. 10. Serves as a relay station for almost all information that comes and goes to the cortex
  8. 11. Regulates all cell activities
  9. 12. Is located in the floor of the third ventricle and is the master control of the autonomic system.
  10. 13. Are fast, involuntary responses to stimuli.
  11. 15. Testes produces what hormone
  12. 19. Power house of the cell
  13. 24. It functions as protection for the vital organs of the chest, such as the heart and lungs.
  14. 25. Smallest bone in the human body. Located in the middle ear.
  15. 28. This gland produces calcitonin