Feedback
An example of feedback is seen in childbirth, where stretching of the uterus triggers the secretion of a hormone, oxytocin, which stimulates uterine contractions and speeds up labor. a. This is a positive feedback loop b. This is a negative feedback loop c. This is not a feedback loop
a. This is a positive feedback loop
The kidneys sense that the oxygen levels in the blood are low. The kidney sends a hormone signal to the bone marrow to make more red blood cells. The number of red blood cells increases, so more oxygen is carried in the blood to return to normal levels. a. This is a positive feedback loop b. This is a negative feedback loop c. This is not a feedback loop
b. This is a negative feedback loop
In a feedback loop, the variable is reinforced and keeps going up or keeps going down. a. Positive Feedback b. Negative Feedback
a. Positive Feedback
Feedback is seen in protein digestion, where the presence of partially digested protein in the stomach triggers the secretion of hydrochloric acid and pepsin, the enzyme that digests protein. Pepsin digests proteins, causing more HCl and pepsin to be released. a. This is a positive feedback loop b. This is a negative feedback loop c. This is not a feedback loop
a. This is a positive feedback loop
In a feedback loop, the variable is reversed or being returned back to normal. a. Positive Feedback b. Negative Feedback
b. Negative Feedback
The body senses that levels of substance C are high in the bloodstream. The brain sends a signal to organ D that causes it to make less substance C until the level of substance C is within normal limits. a. This is a positive feedback loop b. This is a negative feedback loop c. This is not a feedback loop
b. This is a negative feedback loop
The body senses that substance A is low in the bloodstream. The brain sends a signal to organ B that causes it to make more hormone A until the level of A is within normal limits. a. This is a positive feedback loop b. This is a negative feedback loop c. This is not a feedback loop
b. This is a negative feedback loop
The body senses that there is too much substance X in the blood. The brain sends a message to organ Y to metabolize substance X. The brain keeps sending this signal until the levels of substance X is within normal limits. a. This is a positive feedback loop b. This is a negative feedback loop c. This is not a feedback loop
b. This is a negative feedback loop
