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Mammalian spermatozoa have complex structures. This book discusses the events that occur in the normal sperm head and govern the structure-function relationship from the time of spermatogenesis to that of fertilization or egg activation.
Adult neural stem cells are undifferentiated cells that are present in the adult brain and are capable of dividing and differentiating into glia and new neurons.
This work attempts to sketch a coherent picture of the amniotic fluid com partment, its borders, and the interactions occurring between fetus and amniotic fluid, for it is this compartment which for 10 months provides the habitat in which the fetus and its functions develop.
Describing the embryonic development of the arteries of a primitive mammal, this text focuses on the tree-shrew Tupaia belangeri to explain the variability among other mammals on the basis of a common developmental pattern.
How could a structure as complex as the vertebrate brain develop from the simplest multicellular animals? Natural selection offers an impeccable mechanism for the gradual transformation of species, but even Darwin sometimes expressed doubts about the origin of highly complex structures.
The prostate hosts neuroendocrine cells whose origin and functional roles warrant better understanding.
The studies described here are based on histological serial sections of the entire bladder neck region of 50 male and 15 female deceased of all age groups. A Musculus vesicoprostaticus et vesicovaginalis, a Musculus dilator urethrae and a Musculus ejaculatorius are defined.
Sensory signals reach the cerebral cortex after having made synapses in different relay stations along the sensory pathway. Several lines of research indicate that the massive corticifugal system improves ongoing subcortical sensory processing and reorganizes the receptive fields in visual, auditory and somatosensory systems.
The esophagus is a relatively simple though vital organ. Beyond its role of propelling food from the pharynx to the stomach by a propulsive contraction wave representing the esophageal phase of deglutition, it is more recognized as a sensory organ from which a variety of respiratory and cardiovascular reflexes can be triggered.
There is now growing evidence that human testicular germ cell cancer originates from fetal germ cells exhibiting an aberrant programme of gene expression, and tumour progression may be favoured by an aberrant Sertoli cell-germ cell communication.
The objective of the present work is to review the existing literature on joint incongruity, cellular mechano-transduction, and computer simulations of mechano-adaptive bone remodelling, and to quantitatively assess the effect of incongruity on load transmission and subchondral mineralisation.
This title allows the reader to study the most recent and accurate information about cardiac veins that is available. The photographic documentation is characterized by great accuracy, aestheticism and quality. The data obtained from human cadaveric specimens may be easily adapted and applied to benefit cardiological patients.
In this treatise, current knowledge on the neurogenesis, axonal outgrowth, synaptogenesis, and regenerative capacity of descending supraspinal pathways in tetrapods is discussed.
After consideration of oligodendroglia, microglia and ependymal cells, we describe the development of Schwann cells, the glia found in the PNS.In general, morphological observations of developing mammalian nervous tissues (mostly rodent) are emphasized;
Pain is both a sensory experience and a perceptual metaphor for damage and it is activated by noxious stimuli that act on a complex pain sensory apparatus. However, chronic pain having no more a protective role can become a ruining disease itself, termed "neuropathic pain".
Based on material assembled by Dr Jaap HR Schoen who was one of the few neuroanatomists to apply the Nauta method to human material. Gaining insight in the consequences of longitudinal damage to the human spinal cord is necessary before reimplantation of the avulsed rootlets or an autologous transplant can be performed in man.
The unexpected results from an investigation into hereditary congenital anorectal malformations of pig embryos have demonstrated the weakness of earlier interpretations and constructions and underlined the need for a new inquiry into the normal development of the area in human embryos.
This review is focused on the topography and connections of some of the neuron populations that determine the manual dexterity of the Macaque monkey. The text critically examines some of the new ideas triggered by observing the monkeys over the last decade.
"This book is primarily written for neuroscientists who will always be interested in the role of calcium in the internal neuronal environment.
in the human visceral pleura is the sole reliable criterion for the statement that it belongs to the 'thick type', while all observed animals have a 'thin' type VP. We strictly de?ned and nominated the main structures of the lymphatic regions as lymphatic units, stomata, and LL.
Revealing the morphological correlate of antigen presentation in rodents, this text describes the method of immunoquenching of fluorescence which combines retrograde labelling and subsequent immunophenotypical characterization of cells.
This review describes recent research into the cause of testicular descent and discusses two controversial theories on the mechanism. New information about germ cell development in the postnatal testis is changing the way we view treatment and the ultimate prognosis.
The book gives a review of the state-of-the-art of recent investigations of the adipositas diabetes syndrome of sand rats kept under laboratory conditions and given various diet regimes.
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