Term
| Digestion of large food molecules provides resources for what 2 functions of the body? |
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Definition
Protein Synthesis
and
Cellular respiration |
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Term
| Trace the path of blood through the heart. |
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Definition
Blood enters the heart through from the Vena Cava into the right Atrium.
Then from the right atrium to the right ventricle through the tricuspid valve.
Then from the right ventricle to the lungs through the pulmonary valve
Then into the left atrium from the pulmonary vein
then into the from the left atrium to the left ventricle through the mitralv valve
lastly from the left ventricle to the aorta via the aortic valve
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Term
What causes the first sound during a heart beat?
What causes the second? |
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Definition
The first is caused by the closing of the Atrio-ventricular valves.
The second is caused by the closing of the semilunar valves |
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Term
What enzyme does saliva contain?
What does it digest?
What is the optimum pH at which it functions? |
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Definition
Salivary Amylase
which
Digests Starch (a polysaccharide) into maltose (a disaccaride).
Salvary Amylase works best at a pH between 7 and 8 |
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Term
Why are enzymes important in digestion?
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Definition
| They speed chemical digestion until it is fast enough to sustain life. |
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Term
What is happening during a ventricular systole?
Diastole?
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Definition
During a Ventrivular systole, the ventricles are contracting, the semilunar valves are open and the A-V valves are closed.
During a ventricular diastole, the ventricles are relaxing. |
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Term
| What provides the Heart with Oxygen? |
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Definition
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Term
| What factors influence heart rate? |
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Definition
Epinepherine,
miogenic muscle contraction,
the sino-atrial node |
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Term
| What structural characteristics do veins have that adapt them to their function? |
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Definition
| valves, weak tunica medius |
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Term
| What are the 5 primary components of blood? |
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Definition
| plasma, phagocytes, erythrocytes, platelets, and leukocytes |
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