IB SEHS 2.1 & 2.2

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Across
  1. 3. medulla _________ of the brain; the location of the cardiac control system
  2. 5. ________ Volume of air still contained in the lungs after a maximal exhalation
  3. 7. <1% of blood volume. Assist in the process of repair following an injury
  4. 9. ____________ Circulation is the portion of the cardiovascular system that carries oxygen-depleted blood away from the heart and to the lungs and then returns it, oxygenated, back to the heart.
  5. 13. __________ system stimulates the heart to beat faster.
  6. 14. ________ Ventilation inflow and outflow of air between the atmosphere and the lungs (basically breathing)
  7. 16. ___________ system returns the heart to its resting rate.
  8. 18. Maximum volume of air that can be exhaled after a maximum inhalation (two words)
Down
  1. 1. White blood cells <1% of blood volume, primarily involved in immune function and protecting the body from infection. They do this by ingesting foreign microbes in a process called phagocytosis.
  2. 2. Make up 40-45% of the blood volume known as hematocrit. Contain an oxygen-carrying pigment called hemoglobin, which gives blood its red color.
  3. 4. ________ Volume of air breathed in and out in any one breath
  4. 6. __________Nervous System Responsible for control of involuntary or visceral bodily functions. This system comprises the sympathetic system and the parasympathetic system.
  5. 8. ___________ Reserve Volume volume of air in excess of tidal volume that can be exhaled forcefully
  6. 10. Capacity volume of air in the lungs after a maximum inhalation; the sum of the Vital capacity and residual volume (two words)
  7. 11. _________node which receives signals from the sympathetic and parasympathetic nervous systems to regulate heart rate.
  8. 12. ____________ Circulation is the portion of the cardiovascular system that carries the oxygenated blood away from the heart and delivers it to the body. It also carries the deoxygenated blood after use back to the heart to be re-oxygenated.
  9. 15. ___________ Reserve Volume additional inspired air over and above tidal volume
  10. 17. __________ hormones; Adrenaline and noradrenaline released by adrenal glands