Warm-Up Create a representation (cartoon, diagram, flow map, et cetera) to show how the vertebrate nervous system detects transmits information from one neuron to another. (LO 3.49)
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stimulatory inhibitory
sensation brain 3. brain interneuron which mediate complex sensory and motor networks. 1. sensory neuron to SC spinal cord 2. sensory neuron to brain 5. motor neuron to muscle 4. motor neuron to SC
which mediate complex sensory and motor networks. Different parts of the brain receive different sensory inputs, but the motor cortex sends information to the spinal cord to produce a response. hearing scent touch touch sight
A reflex is a neural network that does not involve the brain (only the spinal cord). which mediate complex sensory and motor networks. Different parts of the brain receive different sensory inputs, but the motor cortex sends information to the spinal cord to produce a response.
A reflex is a neural network that does not involve the brain (only the spinal cord). which mediate complex sensory and motor networks. Different parts of the brain receive different sensory inputs, but the motor cortex sends information to the spinal cord to produce a response.
which mediate complex sensory and motor networks. A reflex is a neural network that does not involve the brain (only the spinal cord). Hundreds of billions of neurons are in the brain and much research is being devoted to mapping the brain. Different parts of the brain receive different sensory inputs, but the motor cortex sends information to the spinal cord to produce a response.
which mediate complex sensory and motor networks. Different parts of the brain receive different sensory inputs, but the motor cortex sends information to the spinal cord to produce a response. A reflex is a neural network that does not involve the brain (only the spinal cord). Humans do not have the most neurons (whales do), but they have the most synapses.
which mediate complex sensory and motor networks. A reflex is a neural network that does not involve the brain (only the spinal cord). Octopuses are the most intelligent invertebrates and have nearly as many neurons as cats! Different parts of the brain receive different sensory inputs, but the motor cortex sends information to the spinal cord to produce a response.
CTQ #1 In vertebrates, sensory neurons detect sensations and relay the information to the spinal cord. Neurons in the spinal cord then relay the information to the brain. Explain how a pressure sensation detected in a fingertip could result in an inhibitory response in the brain. (LO 3.44, 3.46)
CTQ #2 A natural response to sensing danger is an increased heart rate: for example, when some sees a dangerous animal, the heart starts beating very quickly. Draw and explain the process by which the nervous system senses the bear through the eye, relays and integrates the information within the brain, and produces the heart-rate response. (LO 3.43, 3.47, 3.48, 3.50)
Closure Actually, the nervous system increases the heart rate in a person by producing adrenaline (epinephrine), which is a hormone produced by the adrenal medulla gland and travels through the bloodstream to the heart. Redraw your dangerous bear schematic, and explain how adrenaline causes cardiac (heart) muscle cells to start contracting (beating). (LO 3.43, LO 3.47, LO 3.34)