What thermoregulatory mechanism is activated to normalize body temperature in the individual exposed to cold? a) Decreased blood pressure
b) Vasodiltation of arterioles in the skin
c) Increase in hormones T3 and T4
d) Increased lipogenesis

Explanation:

The regulation of body temperature is one of the most critical functions of the nervous system. Here we review our current understanding of thermoregulation in mammals. We outline the molecules and cells that measure body temperature in the periphery, the neural pathways that communicate this information to the brain, and the central circuits that coordinate the homeostatic response. We also discuss some of the key unresolved questions in this field, including: the role of temperature sensing in the brain; the molecular identity of the warm-sensor; the central representation of the labelled line for cold; and the neural substrates of thermoregulatory behavior. We suggest that approaches for molecularly-defined circuit analysis will provide new insight into these questions in the near future.

answer: no, they are not.*

although rubber bands that contain excessive amounts of dye, toxins, or additives are sometimes toxic, most rubber bands do not cause any health issues. since they are typically made of latex, (a natural substance that is extracted from trees) they are not dangerous in any way if you chew them or accidentally ingest a piece of rubber band. however, chewing rubber bands does pose a choking hazard and is not a good habit to have.

*depending on the type of rubber band. the typical rubber bands that you see at stores are not toxic, but other types of rubber or latex that contains certain chemicals may be unhealthy and hazardous.