Answer the following statements true (T) or false (F)
1. The sensor in a feedback loop compares the actual condition to the “normal” condition the body tries to maintain.
2. The effector in a negative feedback loop does something to move the regulated condition back to “normal.”
3. The sensor in a negative feedback loop detects a change in the regulated condition.
4. In the negative feedback loop, the effector is the link between the sensor and the control center.
5. The formation of a blood clot is an example of a negative feedback loop.
1. FALSE
2. TRUE
3. TRUE
4. FALSE
5. FALSE
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Semilunar valves
A. are between the right atrium and right ventricle. B. are between the left atrium and left ventricle. C. are where the IVC and SVC enter the right atrium. D. are where the aorta and pulmonary trunk exit the heart.
The heavy chain of myosin contains 2 important regions: the first acts as ________ to convert energy into movement whereas the second binds to ________.
What will be an ideal response?
Portions of bacteria, viruses, molds, parasites, and cancer cells that cause specific responses from the immune system are called
A. antigens. B. interferons. C. antibodies. D. macrophages.
During thyroid surgery, a surgeon mistakenly removes the parathyroid glands from his patient. Which of the following is a likely outcome in the patient?
A. His kidneys will decrease the loss of calcium in the urine. B. Blood calcium levels will drop. C. His blood sugar will increase. D. He will lose bone mass due to excessive bone erosion.