Compare and contrast lifestyle choices that positively affect physical fitness with those that negatively affect physical fitness.

The cardiovascular system, which transports blood through the body, is a one-way system. select the best answer from the choices provided. t f

In 1996 california legalized the medical use of marijuana, even though it was still illegal under federal law. californians angel raich and diane monson used medical marijuana that they grew on their own property. when federal agents destroyed their plants, monson and raich sued, claiming, among other things, that the commerce clause did not permit the federal government to regulate activities that took place in their back yards and homes. the federal government argued that since consuming locally-grown marijuana for medical purposes affects the interstate market for marijuana, the federal government may regulate—and prohibit—such consumption. whose argument should prevail?

Sensory adaptation of cutaneous temperature receptors some types of sensory receptors, like pain receptors, will continue to transduce pain until the stimulus is removed. other sensory receptors may respond with an initial burst in production of action potentials, but will “adapt” and over time action potentials will cease. sensory adaptation occurs, for example, with olfactory receptors for smell. procedure have the subject place one hand in an ice bath while simultaneously placing the other hand in a warm water bath (@40oc). the subject should keep their hands in the designated baths for two minutes. after two minutes, remove both hands and place both hands in a room temperature water bath. record your observations review questions 1. describe how each hand felt after taking them out of the designated water baths and placing them into the room temperature water bath. 2. define sensory adaptation and relate it to what happened to the temperature receptors in the subject’s hands. 3. list and describe sensory receptors that adapt, and sensory receptors that do not.