Dr. Nevin Aspinwall Bio 106 Chapter 43-

Dr. Nevin Aspinwall Bio 106 Chapter 43- - Chapter 43 Animal...

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Chapter 43 Animal form and function o Well adapted to environment Adapted at all levels molecular and behavior Adaptations are genetic traits that allow them to survive and reproduce in certain environments and under certain conditions Example o Survive without water Desert Kangore rat Get water from food Adaptations are perfect? Made from natural selection Max in fitness of indv Adaptations are acclimatization Genetic change and change in phenotype # of blood cells in blood o Higher elevation have higher RBC count Form and Function are related Teeth o Molars – grinding o Incisor – Cutting and nipping and clipping o Pre Molar – sheering meat o Cannis – killing / holding Basic anatomy of vertebrate o Tube within a tube o Coelom The space between outer tube and inner tube Divided into the dorsal body cavity and ventral body cavity Internal body are suspended by mesenteries Four types of animal tissue o Connective tissue – hold together cartilage, ligment and bone Composed of cells and fibers in an extracellular matrix Loose connective tissue Elastin and Collagen o Support, isolation, food storage o Fat cells, mast cells Dense connective tissue Collage fibers and nuclei of fibroblasts o Tendons, sheath around muscles o Provide flexible strong connection o Fibroblast Cartilage
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Spinal disks, knees and other joints, ear nose tracheal rings Support, shock absorber load bearing Bone Skeleton Protect internal organs provide support for muscle attachment Osteocytes Blood Matrix cell and fibers Immune system communications between organs Nervous Tissue o Made up from Neurons Composed of cell body, dendrites, and axons o Muscles Tissue Movement of body parts or the whole body Smooth muscles o Under involuntary control Rhythmic by central nervous system Skeletal muscle o Voluntary muscles o Lifting talking and all other VOLUNTARY movement Cardiac Muscle o Walls of heart o Rapid spread of signal initiating contraction Epithelial Tissue o Serves as interface between inside of an organ or body and outside Polar Forms a surface layer Held together with polarity o Squamous Lining of lungs capillary walls and blood vessels Cells form thin layers across which diffusion can occur o Cuboidal Lining of some glands and kidney tubules Covering of ovaries Rich in specific transport channels Secretion and absorption o Columnar Surface lining of stomach, intestine and parts of respiratory tract Thick cells protection o Pseudostratified columnar Lining of respiratory tract Gland cells
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10 organ systems o Digestive o Nervous o Respiratory o Circulatory o Skeletal o Muscular o Excretory o Reproductive o Immune o And skin Body size affect animal physiology o Small – eat less o Bigger – eat more o Large animals – live longer. Small live shorter
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Dr. Nevin Aspinwall Bio 106 Chapter 43- - Chapter 43 Animal...

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