BIOL 186 Chapter Notes - Chapter 1-5: Palisade Cell, Nerium, Dicotyledon
4 Apr 2016
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Sieve tube elements- chains of cells that are alive at function maturity however they lack a nucleus, ribosomes and a distinct vacuole. Companion cells-non conducting supportive cells for sieve tube elements. Attached to the sieve tube elements by plasmodesmatas. Ecg- complex graph recording of the electrical activity of the heart. Receptive fields the receptive field of a sensory neuron is a region of space in which the presence of a stimulus will alter the firing of that neuron. Sensory pathways- sensory information from the periphery of the animal ascends through the spinal cord and enters the higher levels of the brain. There are numerous pathways which allow different types of information to be passed to the brain. Types of general somatic sensation include pain, touch, temperature and kinaesthesia (conscious proprioception). This sensory information is sent to one of two destinations; the cerebral cortex or the cerebellum.
