1.6c homeostatic systems regulated by pos feedback Flashcards
1
Q
positive feedback
A
occurs much less frequently than negative feedback
stimulus reinforced to continue moving variable in same direction until a climactic event occurs, then body returns to homeostasis
2
Q
what are some examples of positive feedback?
A
- breastfeeding
- blood clotting
- labor
3
Q
stimulus
A
baby suckles at breast
4
Q
receptor
A
sensory receptors in skin of breast detect the sucking; sending impulses to hypothalamus
5
Q
control center
A
hypothalamus signals posterior pituitary to release oxytocin
6
Q
effector
A
breast is stimulated to eject breast milk
breast milk is released
baby feeds and continues sucking (positive feedback)
