Describe the differences between positive and negative feedback systems
What will be an ideal answer?
A positive feedback system will strengthen or reinforce a change in one of the body's controlled conditions while a negative feedback system will reverse a change in a controlled condition.
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________ is the study of the means by which living organisms both obtain and utilize the nutrients they need to grow and sustain life.
Fill in the blank(s) with the appropriate word(s).
In muscles moving the appendicular skeleton, the more ________ attachment is the most mobile.
A. superior B. distal C. proximal D. inferior
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.
AIDS is caused by a virus that attacks complement enzymes
Indicate whether the statement is true or false