Across
- 1. The endocrine system's most influential gland. Under the influence of the hypothalamus, the pituitary regulates growth and controls other endocrine glands.
- 5. The sensory and motor neurons that connect the central nervous system (CNS) to the rest of the body.
- 6. A simple, automatic response to a sensory stimulus, such as the knee-jerk response.
- 7. Neurons that carry incoming information from the sensory receptors to the brain and spinal cord.
- 8. A pair of endocrine glands that sit just above the kidneys and secrete hormones (epinephrine and norepinephrine) that help arouse the body in times of stress.
- 11. The division of the peripheral nervous system that controls the body's skeletal muscles. Also called the skeletal nervous system.
- 13. The division of the autonomic nervous system that arouses the body, mobilizing its energy in stressful situations.
- 14. The division of the autonomic nervous system that arouses the body, mobilizing its energy in stressful situations.
- 15. Chemical messengers that are manufactured by the endocrine glands travel through the bloodstream and affect other tissues.
- 16. The brain and spinal cord
Down
- 2. The part of the peripheral nervous system that controls the glands and the muscles of the internal organs (such as the heart). Its sympathetic division surpluses; its parasympathetic division calms.
- 3. The body's speedy, electrochemical communication network, consisting of all the nerve cells of the peripheral and central nervous system
- 4. Neurons within the brain and spinal cord that communicate internally and intervene between the sensory inputs and motor outputs.
- 9. The body's "slow" chemical communication system; a set of glands that secrete hormones into the bloodstream.
- 10. Neurons that carry outgoing information from the brain and spinal cord to the muscles and glands.
- 12. Bundled axons that form neural "cables" connecting the central nervous system with muscles, glands, and sense organs.