Anatomy Commons^™

The Morphologic Changes In The Muscles Of Mastication Due To Direct Intramuscular Injection Of Lidocaine, Carbocaine, Procaine And Citanest, Kurt Elliot Friedman

Theses and Dissertations

One of the most commonly experienced symptoms in dentistry and one that is of major concern to the dentist is pain. Since pain is manifested when an environmental change occurs causing injury to responsive tissues, it is often spoken of as a protective mechanism.

Pain has been described by a variety of terms: sharp, burning, aching, cramping, dull and throbbing! (Monheim, 1969). Therefore, it is a difficult term to define. Monheim (1969) describes pain as an unpleasant sensation created by a noxious stimulus that is mediated along specific nerve pathways into the central nervous system, where it is interpreted as …

A Comparison Of Acrosomal Proteinase Activity In The Male And Female Reproductive Tracts Of The Guinea Pig, Thomas Joseph Morris

Theses and Dissertations

The spermatozoon has been the subject of numerous investigations because of its remarkable specialization for locomotion and fertilization. Although the spermatozoon of the guinea pig is relatively large when compared with other mammalian spermatozoa, its small size has hidden many of the details of its structure from the light microscopist. It was not until the invention of the electron microscope that a thorough study of spermatozoon structure could be accomplished. The following anatomical description is based on the works of Fawcett and Hollenberg (1963), Fawcett (1965), and Fawcett (1970). The principle parts of the guinea pig spermatozoon are the head …

Corticospinal Fibers In A Prosimian Primate, Galago, George Edward Goode

Theses and Dissertations

The function of the central nervous system cannot be understood from inspection of a single region, for each cell and fiber has discrete connections. Therefore, a study of the nervous system requires distinct approaches. One fundamental approach has been the study of comparative neuroanatomy.

In a comparative study of the evolution of the primates and subsequently man, the investigator is confronted with a variety of animal forms. Each form represents an end product of a long vertical line of evolutionary development. The problem is to try to reconstruct the vertical line (ancestral forms) from the horizontal end products (extant forms). …

The Anatomical Relationships, Ultrastructure, And Function Of The Pineal Gland In Some Common Laboratory Rodents, Joseph Chester Gregorek

Theses and Dissertations

The pineal complex of rodents is made up of a pineal organ which developmentally always originates from the area between the habenular and posterior commissure and a pineal sac which is continuous with the choroid plexus of the third ventricle. This sac appears to be identical to the choroid plexus at both light and electron microscopic levels. The pineal sac abuts the deep and superficial pineal organs of the golden hamster. In the PET mouse, gerbil, kangaroo rat and Chinese hamster, the sac is contiguous with only small areas of pinealocytes. This sac never abuts true pineal parenchyma in the …

An Ultrastructural Study Of Tubules, Vasculature And Interstitium In Human Renal Homografts, Marilyn Hatch

Theses and Dissertations

In recent years renal homotransplantation has become more frequently used in the treatment of terminal renal disease in man. By carefully selecting donors with the aid of tissue compatibility tests and employing immunosuppressive drugs, these transplants have become increasingly more successful. It is true, however, that even with good tissue match-up and drug treatment rejection episodes occur, frequently within the first two-postsurgical weeks. The majority of these rejection crises may be reversed by increasing drug dosages and occasionally applying x-irradiation to the area of the transplant. In other cases rejection by the recipient is responsible for cessation of function of …