When a neurotransmitter makes the postsynaptic cell more positive inside, ____ has occurred

People tend to show little variation in weight from year to year. This constant weight is referred to as the individual's:

a. homeostatic weight b. set point c. ventromedial weight d. optimal weight

The placenta is like a

a. cargo vessel that collects and delivers supplies. b. sentinel who watches for danger. c. teacher who explains difficult concepts. d. manager who supervises a staff of workers.