ANP 1106 Lecture Notes - Lecture 6: Taste, Limbic System, Skeletal Muscle

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1106
• Professor: Brianne Thrush

Document Summary

Very cellular = not a lot of extracellular matrix, dense. 2 types of cells, neurons and supporting cells. Astrocytes: star shapaed, most abundant, anchor neurons close to capillaries. Microglia: roles n nutrient exchange, antigen presentation, control of environment, protective, touch neurons to monitor well being, can transform into. Ependymal cells: wrapping garment , line cavities of brain and spinal cord as barrier between csf and fluid bathing cells of cns, cilia circulate csf. Oligodendrocytes: provide myelin sheath to cns neurons. Schwann cells: surround neuron cell bodies in pns (ganglia, form myelln sheaths around larger neurons in pns, vital to peripheral nerve cell regeneraton. Know dendrites, axon, axon hillock, myelin sheath, node of ranvier, telodendria (terminal branches), axon collateral. According to direction nerve impulse travels wrt cns. Motor (efferent) neurons away from cns to effector organs like muscles and glands, Association (interneurons) between sensory and motor neurons: integraton of info, 99% of neurons in body, multipolar, within cns mostly.