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Bio Unit 4 Sec 1 #4
Bio Unit 4 Sec 1 #4: Lecture 31
| Question | Answer |
|---|---|
| The mixing and mashing of food (chewing) is ________ digestion | Mechanical |
| Digestion that is enzymes breaking organic compounds into small subunits (carbs, proteins, fats) that can cross cell membranes to enter the blood is _______ digestion | Chemical |
| _________ System is the ingestion, digestion, absorption, and elimination of food | Digestive |
| The human circulatory system is a _____ system because all blood stays in the vessels at all times | Closed |
| The _______ System delivers nutrients to cells and the removes waste products | Circulatory |
| Humans have a ____-Circuit circulatory pathway | Two |
| The two circuits of the circulatory pathway are the _______ and _____ Circuits | Pulmonary; Systemic |
| The ______ circuit is the RIGHT half of the heart that pumps blood to the lungs to PICKS UP oxygen and drop off carbon dioxide | Pulmonary |
| The _____ circuit is the LEFT half of the heart that pumps oxygenated blood to tissues and tissue cells to DROPS OFF oxygen and pick up carbon dioxide | Systemic |
| In the stomach, the pH should be around ___ | 2 |
| The ______ has digestive enzymes to break down food | Pancreases |
| _______ blood enters the ____ atrium of the heart which pushes the blood through the right ventricle and to the lungs | Deoxygenated; Right |
| ______ blood returns to the heart from the lungs and enters the _____ atrium | Oxygenated; Left |
| The left ventricle squeezes oxygenated blood to the _____ and out to the body tissues | Aorta |
| The _____ of the heart prevent the back flow of blood | Valves |
| When the heart valves snap _____, they create the _____ heart sound: "Lub-dub" "Lub dub" | Shut; Beating |
| Sequence of the contraction of the heart is: ____ then _____ then rest | Atria; Ventricles |