Course XXXVII - Teaching 5: Tissues

Tissues are divided into three categories: superficial epithelial, deep epithelial and connective. Superficial epithelial tissues are totally renewed and removed quickly; new cells replace and push the old ones, which separate from the organism.
Since deep epithelial tissues are placed in the depth of the organism and their external communications are indirect by means of blood and superficial epithelial tissues, they have to be removed in form of liquid and very tenuous particles. Form remains apparently the same, but substance changes continuously. Epithelial, superficial and deep tissues are linked by connective tissue.
This is the support of the organism. It covers deep coated tissues of the epithelium, presenting two kinds of cavities; the ones get deep elements, muscular fibers and nervous cells; the other are like inner lakes, in which nutritional juice and their by-products circulate.
Dynamic atoms influence nurture and chemical properties of the connective tissues. We could say through superficial epithelial tissues they get energy from outside and convey it to deep tissues; and vice versa they convey inner energy outward; all this without any intervention of the brain.
Superficial epithelial tissues are composed of one or more layers of epithelial cells, applied on a vascular connective tissue.
When there is only one layer of cells, the epithelium is called simple: when cells form several layers, it is called stratified epithelium.
Epithelial cells are united each other by a substance called cement.
Atoms that influence them are the imponderable. So, these tissues attract constantly and agglomerate organic cells, while they impede external atomic vibrations to enter the organism without transformation.
This is why superficial epithelial tissues have diverse form and resistance, depending on their exposition to the action of external agents. Sometimes they become steadily defensive, like in fingernails and hair; they let pass vibrations of luminous rays directly to the physical system, and that is why they are characteristically elastic and transparent.
Deep epithelial tissues respond to the action of imponderable atoms, considering the muscular tissue among these deep tissues.
Consistency of a muscular tissue varies, according to conditions of the muscle, from very hard to very soft. By its especial consistency it is rent easily, thence it is protected by other tissues.
Muscular elasticity is extraordinary, but to its ordinary functions it would be useless if it had not the sensibility given by the nervous tissue.
Specific imponderable atoms of muscles establish, in the latter, a very short wave, which is mainly controlled by atoms X2.
Nutrition of a muscular tissue is very active and its contraction is voluntary and reflex.
A last union of the above-described tissues forms the nervous tissue.
Ponderable, imponderable and dynamic atoms act together in it.
Nervous tissues have three kinds of substances that rule the nervous movement: grey substance, white substance and myelin.
The grey substance is in dregs of medulla, cerebellum and brain, in those of peripheral nerves and in those of the great sympathetic; the latter differentiate from the former by a lack of protective sheath of the third fatty substance, called myelin.
Nervous elements are connected by atomic groups through electric and magnetic threads that create a field, wave or magnetic way; through it imponderable atoms pass, which vitalize the ponderable by means of the dynamic, and this way they give its own excitability to the nervous system.