biology

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Across
  1. 2. The wave in an ECG that represents atrial depolarization.
  2. 3. Who or what acts as the controller in the cooking control loop
  3. 5. A diagnostic imaging technique that uses magnetic fields and radio waves to produce detailed images of organs and tissues.
  4. 7. What is the term for the difference in luminance or color that helps distinguish objects in an image?
  5. 10. In synaptic transmission, what are the chemical messengers that carry the signal across the synaptic gap?
  6. 11. This imaging method evaluates the thickness of the retina and optic nerve using reflected light.
  7. 15. Type of measurement done using bioelectric potentials generated in the heart
  8. 16. The medical imaging technique that evaluates the metabolic activity of tissues using a radioactive tracer.
  9. 17. Which process involves the release of neurotransmitters from the axon terminal of one neuron to the receptors on the post-synaptic neuron?
  10. 19. A device that measures electrical activity in muscles.
  11. 20. What do we call the unwanted variations in image density that can appear as grain or pixel noise, particularly in low-light conditions?
  12. 21. In medical X-ray imaging, which body part appears the darkest due to its low absorption of X-rays?
  13. 22. How does the human body demonstrate feedforward control?
  14. 23. This imaging procedure allows doctors to visualize the internal organs and vessels without large incisions, using a flexible tube with a camera.
  15. 24. The process by which a cell's internal environment maintains balance.
Down
  1. 1. Which component of blood is responsible for transporting gases, nutrients, hormones, and wastes?
  2. 2. This is the specialized cardiac muscle tissue responsible for transmitting electrical signals throughout the heart.
  3. 4. The process by which the heart muscle cells become electrically charged and prepare for contraction.
  4. 6. The term for the negative internal charge of a cell when it is at rest.
  5. 8. What is the term for the small gap between two neurons where neurotransmitters are released to facilitate communication?
  6. 9. This part of the nervous system includes the brain and spinal cord, responsible for processing information
  7. 12. What is the process of converting analog signals from an imaging detector into a digital format for storage and processing?
  8. 13. What is the primary function of a feedback control system?
  9. 14. What is the main pigment in red blood cells that binds oxygen?
  10. 18. This type of potential occurs when a neuron fires and rapidly changes its membrane potential.