BIOL 207 Lecture Notes - Lecture 10: Somatic Nervous System, Blood Doping, Autonomic Nervous System
21 Oct 2016
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Yellowish liquid with dissolved gases and nutrients: red blood cells (erythrocytes), white blood cells (leukocytes, platelets (thrombocytes) Muscle tissue myo-, sarco: striated/voluntary/somatic/skeletal, smooth/visceral/involuntary, innervated by autonomic nervous system (involuntary, part of walls of hallow internal structures (visceral) Blood vessels, gastrointestinal tract: not individually innovated, uninucleate. Gap junction: connector between cells which allows impulses to be carried. Called nexus in smooth muscle: cardiac, forms 98% of heart; other is epithelium, involuntary, not individually innovated, autorhythmic: self contract and relax, uninucleate. Gap junction called intercalated disk: protect, support and insulate neurons, outnumber neurons 5-10 : 1, glial cells are mitotic but neurons are amitotic. Nervous tissue: cell types: neuroglia/glial cells, neuron, other terms. Conducting impulses to other neurons or effector organs( muscle and glands: capable of, structural and functional units of the nervous system, components. Axon: transmits impulses away from the cell body. Dendrites: transmit impulses towards the cell body dendrite -> cell body -> axon: synapse: spaces between neurons.
