Its cells can move from place to place. It contains more than one type of blood cell. It is derived from mesodermal tissue. In positive feedback, the effector's response is in the same direction as the initiating stimulus rather than opposite to it. Positive feedback systems have control centers that are lacking in negative feedback systems.
Positive feedback benefits the organism, whereas negative feedback is detrimental.
Positive feedback systems have effectors, whereas negative feedback systems utilize receptors. Arrange the following stages of fertilization and early development into a proper sequence. III d. V, I, IV, II, III e. V, III, I, II, IV 10. The blastopore of the frog embryo will become the a. lungs b. A digestive juice with a pH of 2 probably came from the a. esophagus b. mouth c. stomach d.