Unit 12
Across
- 2. system with several integrating and relay centers located in the forebrain
- 5. the heart's relaxation phase
- 6. fish have a _________ circulatory system
- 8. nervous system that includes nerves that carry impulses
- 9. control autonomic and homeostatic functions
- 11. low blood pressure
- 12. surface part of an animal where oxygen from the environment diffuses into cells and carbon dioxide diffuses out to the environment
- 17. alveoli ________ surface are
- 19. the trachea is always ________
- 20. system the communication and coordination network throughout an animal's body
- 21. the relay point between cells
- 23. potential voltage across the plasma membrane of a resting neuron
- 25. breathing is an alternation of ________ and exhalation
- 26. arm pain down a person's ___________ can be a sign of a heart attack
- 27. volume to test a person's _______, take a normal breath and exhale only as much air as you would normally exhale
- 28. blood cells the most numerous cell in blood
- 29. capacity to test a person's _______, take a deep a breath as possible then exhale all the air you can
Down
- 1. lobe of the cerebral cortex responsible for taste and speech
- 3. the top number of a patient's blood pressure measures this
- 4. valve located between the left atrium and the left ventricle
- 7. chemical that carries information from one neuron to another type of cell that will react
- 9. where the digestive and respiratory systems meet
- 10. control centers in the ______ regulate breathing
- 13. clusters of air sacs
- 14. branched, short and receive incoming messages from other cells or the environment
- 15. thin walled, usually carries blood away from the heart
- 16. number of chambers of a mammals heart
- 18. nervous system includes the brain and spinal cord
- 22. veins usually carry blood to the body, except the ______ vein which carries blood to the heart
- 23. atria where the heart's pacemaker is found
- 24. when the diaphragm relaxes and air is "pushed" out of the lungs due to decrease in volume and increase in pressure results in ______ pressure breathing