Echidnas (eBook)
294 Seiten
Elsevier Science (Verlag)
978-1-4831-5040-6 (ISBN)
Organized into 11 chapters, this volume begins with an overview of the natural history, classification, and physical characteristics of echidnas. This text then examines the food intake and digestion mechanisms of echidnas whereby the ground-up insects in the buccal cavity are permeated with saliva secreted by the sublingual, subaxillary, and parotid salivary glands. Other chapters describe various stages in the development of echidna embryos and pouch young. This book discusses as well the primary division of the central nervous system of echidnas, including the prosencephalon, mesencephalon, and rhombencephalon. The final chapter deals with the similar anatomical characteristics that anteaters exhibit, and describes also their differences in the grinding techniques, forelimb anatomy, and stomach structures.
This book is a valuable resource for biologists and zoologists.
Echidnas, Volume 38 presents the scientific classification of the mammal echidnas. This book describes the characteristics, behavior, reproduction, embryology, anatomy, and physiology of the spiny anteaters, Tachyglossidae. Organized into 11 chapters, this volume begins with an overview of the natural history, classification, and physical characteristics of echidnas. This text then examines the food intake and digestion mechanisms of echidnas whereby the ground-up insects in the buccal cavity are permeated with saliva secreted by the sublingual, subaxillary, and parotid salivary glands. Other chapters describe various stages in the development of echidna embryos and pouch young. This book discusses as well the primary division of the central nervous system of echidnas, including the prosencephalon, mesencephalon, and rhombencephalon. The final chapter deals with the similar anatomical characteristics that anteaters exhibit, and describes also their differences in the grinding techniques, forelimb anatomy, and stomach structures. This book is a valuable resource for biologists and zoologists.
Front Cover 1
Echidnas 4
Copyright Page 5
Table of Contents 6
ACKNOWLEDGEMENTS 10
CHAPTER 1. EXTERNAL ANATOMY, TAXONOMY, AND NATURAL HISTORY 12
EXTERNAL FEATURES 12
TAXONOMY 16
NATURAL HISTORY 22
CHAPTER 2. INTAKE OF FOOD, DIGESTION, AND BODILY FUNCTIONS 45
INTAKE OF FOOD 45
DIGESTION 50
NITROGEN EXCRETION, N2 RETENTION, AND GROWTH 58
CHAPTER 3. SKELETON 69
EARLY CHONDROCRANIUM 69
DEFINITIVE CHONDROCRANIUM 70
ADULT SKULL 74
APPENDICULAR SKELETON 84
CHAPTER 4. THE CENTRAL NERVOUS SYSTEM 87
ANATOMY OF THE BRAIN 87
THE CRA NIAL NERVES AND THE MOTOR FUNCTIONS OF THE BRAIN 92
THE SENSORY AND CO-ORDINATION SYSTEMS OF THE BRAIN 96
THE PONS VAROLII 100
THE CEREBELLUM 100
THE MID-BRAIN 102
PARS INTERCALIS ENCEPHALI 104
THE DIENCEPHALON 105
THE TELENCEPHALON 109
CONCLUSIONS 118
CHAPTER 5. SPECIAL SENSES 120
THE EYES 120
HEARING 122
CHAPTER 6. ENDOCRINE GLANDS AND THE GLANDS OF THE IMMUNE SYSTEM 127
ADRENALS 127
THE PITUITARY GLAND 131
THE ISLETS OF LANGERHANS 134
THE THYROID GLAND AND OTHER DERIVATIVES OF THE PHARYNGEAL POUCHES 135
CHAPTER 7. THE REPRODUCTIVE ORGANS 142
THE MALE SEXUAL ORGANS 142
THE FEMALE SEXUAL ORGANS 155
THE BREEDING SEASON 165
CHAPTER 8. EMBRYOLOGY 167
EARLY CLEAVAGE STAGES 167
FORMATION OF THE UNILAMINAR BLASTODERM 171
FORMATION OF THE BILAMINAR BLASTODERM 175
EXTERNAL FEATURES AND EMBRYONIC MEMBRANES OF EMBRYOS FROM POUCH EGGS 178
CHAPTER 9. THE MAMMARY GLANDS 189
ANATOMY 189
DEVELOPMENT 204
GROWTH OF THE POUCH YOUNG AND THE COMPOSITION OF THE MILK 207
CHAPTER 10. CIRCULATORY SYSTEM AND BLOOD 221
THE CIRCULATORY SYSTEM 221
BLOOD 224
CHAPTER 11. AFFINITIES OF THE PROTOTHERIA 227
APPENDIX I: ANATOMICAL SPECIALIZATIONS 241
SALIVARY GLANDS 246
STOMACHS 248
SNOUTS AND PALATES 249
FEEDING BEHAVIOUR AND FOOD HABITS 251
CONCLUSIONS 255
REFERENCES 255
APPENDIX II: IRON CONTENT OF ECHIDNA MILK 258
APPENDIX III: KIDNEY FUNCTION 260
APPENDIX IV: RESPIRATION 262
APPENDIX V: INCUBATION PERIOD OF THE EGG IN THE POUCH 263
REFERENCES 266
AUTHOR INDEX 278
SUBJECT INDEX 282
OTHER TITLES IN THE ZOOLOGY DIVISION 294
| Erscheint lt. Verlag | 26.8.2015 |
|---|---|
| Sprache | englisch |
| Themenwelt | Sachbuch/Ratgeber ► Natur / Technik ► Naturführer |
| Naturwissenschaften ► Biologie ► Zoologie | |
| Technik | |
| ISBN-10 | 1-4831-5040-2 / 1483150402 |
| ISBN-13 | 978-1-4831-5040-6 / 9781483150406 |
| Haben Sie eine Frage zum Produkt? |
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