Question

the contraction of the uterus during the birth of a baby is an example of ______ feedback.
negative
positive
inhibitory
deviating
question 8
1 pts
positive - feedback control systems:
have no effect on the deviation from set point.
accelerate a change.
ignore a change.
do not exist in human systems.
question 9
1 pts
the term that literally means self - immunity is:
autoimmunity.
homoimmunity.
passive immunity.
active immunity.

Explanation:

Question (about uterine contraction feedback)

In positive feedback, a process reinforces itself. During childbirth, uterine contractions push the baby, which stimulates more contractions, accelerating the process. Negative feedback works to reverse a change, inhibitory stops a process, and deviating is not a standard feedback term here. So the contraction of the uterus during birth is positive feedback.

Positive - feedback systems amplify or accelerate a change. They don't have no effect (they do affect the deviation), they don't ignore change (they enhance it), and they do exist in human systems (like childbirth). So positive - feedback control systems accelerate a change.

"Auto" means self. Autoimmunity literally means self - immunity (the immune system attacking the body's own cells). Homoimmunity is not a term for self - immunity, passive immunity is from external antibodies, and active immunity is from the body's own immune response to an antigen (not self - immunity in the literal sense here).

Answer:

B. positive (assuming the options are labeled with letters, if original labels were different, adjust. But based on the options: positive is the correct choice for the uterine contraction feedback question)

Question 8 (Positive - feedback control systems)