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 shoulder, what two types of s
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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 shoulder, 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
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