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Pop Quiz!. Have your clicker ready. Get out a piece of paper, too, in case of technological hiccups. Are you here today?. Yes. Is it summer yet?. Alas, no. 1. Arteries are thick-walled because:. They carry blood at high pressure. They must allow for gas exchange.
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Pop Quiz! Have your clicker ready. Get out a piece of paper, too, in case of technological hiccups.
Are you here today? • Yes.
Is it summer yet? • Alas, no.
1. Arteries are thick-walled because: • They carry blood at high pressure. • They must allow for gas exchange. • They must move blood up the legs toward the heart. 30 Countdown
2. Where would you expect to find oxygenated blood? • Right atrium • Pulmonary arteries • Left ventricle • Superior vena cava 30 Countdown
3. The vessel(s) carrying oxygenated blood out of the heart: • Superior and inferior vena cavae • Pulmonary arteries • Pulmonary veins • Aorta 30 Countdown
4. Most oxygen found in the blood stream is: • Dissolved in the plasma. • Bound to hemoglobin. • Taken up by white blood cells. • Bound to carbon. 30 Countdown
5. In fish and mammals, gas exchange is made efficient by: • Concurrent exchange. • Low diffusion gradient. • Counter current exchange. • Active transport. 30 Countdown
6. The cells of the immune system that produce antibodies are: • T-helper cells • T-killer cells • B-plasma cells • Macrophages 30 Countdown
7. How do vaccines work? • They destroy pathogens. • They stimulate the production of antibodies. • They increase the number of white blood cells. 30 Countdown
8. Mast cells stimulate inflammation by releasing: • Histamines • Antibodies • Phagocytes • Lysozymes 30 Countdown