

Cells, Gels, and the Engines of Life
Chapter 1 DEBUNKING MYTHS On the surface everything seems to be in order. Virtually all known cellular processes are by now accounted for by well-described mechanisms: ions flow through channels; solutes are transported by pumps; vesicles are moved y motors; etc. But as we shall see as we probe beneath the surface of these solutions, a bewildering level of complexity hints at a situation that could parallel the epicycles. I propose to step back and regroup. Firm ground nee


Collagen : Holding the Body Together
Collagen is the glue that holds the body together. The word comes from kolla, the Greek word for glue, and our ancestors made glue by boiling down the skin and sinews of animals. When we make broth, we turn skin, cartilage, tendons, and ligaments into gelatin-rich liquid glue. Cooking breaks down collagenous protein into gelatin which provides the amino acids the body needs to make the “glue” we call connective tissue. In the form of twisted cables, collagen strengthens th

Thalamus-Depression / Basal Ganglia-Anxiety
FUNCTIONS OF THE LIMBIC SYSTEM (LS) Sets the emotional tone of the mind Filters external events through internal states Tags events as internally important Stores highly charged emotional memories Modulates motivation Controls appetite and sleep cycles Promotes bonding Directly process the sense of smell Modulates libido In a paper published in 1878, French neurologist Paul Broca noted that deep in the middle of the brain all mammals possess a group of areas that are differen