Biology > QUESTIONS & ANSWERS > BYU BIOL 049 Speedback 4 (All)

BYU BIOL 049 Speedback 4

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BYU BIOL 049 Speedback 4 Which drug is a depressant of the CNS? - ✔✔alcohol Hormone producing organs belong to which body system? - ✔✔endocrine system If a baseball were to hit you in the s... houlder, what two types of stimuli would your PNS generate? - ✔✔mechanoreceptor and nociceptor What is the charge of a neuron at rest? - ✔✔-70 mV What type of neural stimulation is received by rods and cones? - ✔✔photoreceptors What structure on the neuron receives signals? - ✔✔dendrites How much does the charge on a neuron have to decrease in order to get to the threshold level? - ✔✔from -70 mV to -50 mV Which part of the brain coordinates movement? - ✔✔cerebellum Which part of the endocrine system is a link between the endocrine system and the nervous system? - ✔✔hypothalamus Which statement is false? - ✔✔Hormones affect the body quicker than nerve signals. Physically painful withdrawal symptoms occur when a person stops an addiction to which type of drug? - ✔✔heroin What structure on the neuron sends signals to organs and muscles? - ✔✔axons Which division of the nervous system includes the brain the spinal cord? - ✔✔central nervous system Which drug is a narcotic of opium? - ✔✔heroin What part of the ear contains the hair cells that detect and send sound stimuli to the brain? - ✔✔the cochlea What is the basic unit of the nervous system? - ✔✔neurons Where is the occipital lobe in relation to the frontal lobe of the cerebrum? - ✔✔inferior and posterior Which statement is false? - ✔✔Drug addiction is a relatively new problem in the world. What is the largest part of the brain and controls personality and logic? - ✔✔cerebrum When an electrical signal gets to the end of an axon, what causes the signal to continue to the next neuron? - ✔✔neurotransmitters If the brain recognizes that an image coming through the eye is out of focus, what adjustment would be made in the eye to focus the image? - ✔✔The lens would change shape to focus the image on the fovea. When an electrical impulse reaches the end of the neuron, it triggers the release of what? - ✔✔neurotransmitters Which drug stimulates the CNS? - ✔✔cocaine What is the function of neurotransmitters? - ✔✔to transmit nerve impulses across a synapse Which part of the ear contains auditory ossicles that transfer the sound vibrations to the cochlea? - ✔✔the middle ear Which of the following hormones is responsible for bringing blood glucose levels down? - ✔✔insulin How can diabetes mellitus be treated? - ✔✔taking insulin shots Which division of the nervous system receives stimuli directly from the environment? - ✔✔peripheral nervous system What type of drug slows down the CNS? - ✔✔depressant How do nerve impulses travel through a neuron? - ✔✔electrically What type of neural stimulation do to the olfactory nerves receive? - ✔✔chemoreceptors Which part of the brain is the center of the endocrine system and releases hormones? - ✔✔hypothalamus [Show More]

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