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Synapses SCI Human Biology - 1 Assigned: 10/14 Due: 10/15 (Note: Open Note Quiz Thursday)

Synapses (2nd assignment of CONTROL FREAK)

Motor Neuron p.234 What is a motor neuron? Muscle fibers are stimulated to contract by motor neurons whose axons are in the nerves

What is the name neurotransmitter released by motor neurons? acetylcholine How does botox prevent muscle contraction? It blocks the release of acetylcholine so that the muscle never knows to contract or not

Cocaine p.268 What does cocaine interfere with at the synapses? It is a powerful stimulant in the cns that interferes with the reuptake of dopamine at synapses. What is the effect? The result is a rush of wellbeing that lasts from 5-30 mins. Methamphetamine p.268

What neurotransmitter does meth resemble? It is stimulatory What is the effect? It reverses fatigue and lifts up the user, maintains wakefulness Heroin p. 268 Where is heroin derived? Depresses the nervous system, it goes to the brain, converts to morphine’s and binds to opiod receptors What is heroin converted to that can bind opiate receptors in the brain? Morphines What do the opiate receptors do? Control breathing, pain, reward circuit, and mental function

Marijuana p. 269 What is THC? The resin that the marijuana plant are covered with, it is the bad part in marijuana What is anandamide? What is the relationship between THC and anandamide and cannabinoids? Thc mimics anandimide, which is a neurotransmitter Why are the receptors that bind cannabidoids important? They are locaded in the hippocampus, brain areas that are important for memory, orientation, balance, motor coordination, and perception. What does smoking THC cause? Mild eupuoria, along with alterations in vision and judgment.