Nervous System
Which nervous system automatically regulates glands, internal organs, pupil dilation, digestion, and blood pressure?
Autonomic
In transmitting sensory information to the brain, an electrical signal travels from the _______ of a single neuron
Axon to the cell body to the dendrites
Since neurons fire all or nothing, what is the difference when you have weak or strong stimuli
Neurons will fire more quickly
More neurons will fire
Neurons will fire more frequently
Name the Neurotransmitter Affected: You are in mile 23 of the marathon and suddenly you are feeling no pain
Endorphins - Natural opiate (responsible for Runner's High)
When Dirk was stung by a bee, the pain message was transmitted to his spinal cord by the _______ nervous system.
Sympathetic
Ruth has experienced progressively increasing difficulty moving, speaking, and swallowing due to the deterioration of the myelin sheaths within her nervous system. Ruth most clearly suffers from
Multiple Sclerosis
If the neural impulse fires with the same "strength: every time it fires (all or nothing), how can you tell the difference among different stimulus intensities
The neuron will fire more quickly (rapid succession)
More neurons will fire
Name the Neurotransmitter: You believe you can read people's minds and that exposure to sunlight will cause you to combust
Dopamine (implicated in Schizophrenia)
The division of the peripheral nervous system controlling the body's skeletal muscles is the
Somatic Nervous System
The myelin sheath helps to increase the ______ of neural impulses.
speed
The resting potential is caused by
Electrical polarization of the inside of the inside chemical ions (negative) and the outside chemical ions (positive)
Curare is a paralyzing poison that functions as a(n)
Acetylcholine agonist
When Mr. Valdez thought his 1 year old daughter had fallen down the stairs, his heartbeat accelerated, his blood pressure rose, and he began to perspire heavily. Mr. Valdez's state of arousal was activated by his ______ nervous system
Sympathetic
A postmortem analysis of Einstein's brain revealed a much greater concentration of _______ than found in the average adult brain.
Glial cells
The re-uptake of a neurotransmitter such as serotonin would involve the re-absorption of serotonin into a(n)
Azon terminal
After ingesting a poisonous substance, Alex experienced a temporary muscular paralysis. The poison most likely interfered with the normal functioning of the neurotransmitter
Acetylcholine
Dendrites are branching extensions of
Cell bodies
For a neuron to fire, it takes a stimulus that is just string enough to get past its
Threshold
Name the Neurotransmitter Affected: You are really intoxicated and find yourself very "uninhibited"
GABA - GABA is the major inhibitory neurotransmitter; high amounts of GABA are released when drinking alcohol
Janelle experiences difficulty sleeping and is seeking medical help for her lengthy episodes of depression and loss of energy. Effective prescription drugs for treating these symptoms would most likely be designed to increase the availability of the neurotransmitter
Serotonin