Bio 109 Exam3 Questions and Answers
Verified by Experts
What is an action potential? An electrical impulse, primary means of communication
throughout the nervous system
Define neurotransmitter Binds to receptors on target membrane and opens gated channels
Define synapse special junction between axon terminus and target cell
Define synaptic cleft neurotransmitter diffuses across, space between neuron and receiver
Define synaptic transmission - Process of transmission of impulse from sending
(presynaptic neuron) across synaptic cleft to receiving (postsynaptic) target
- Involves release and diffusion of chemical neurotransmitter
Name 5 neurotransmitters Acetylcholine, Serotonin, Dopamine, Glutamate, Endorphins
,Principal actions of acetylcholine excitatory on skeletal muscles; excitatory or inhibitory
at other sites, depending on receptors
Principal actions of Serotonin usually inhibitory; involved in moods, sleep cycle, appetite
CONTENTMENT
Principal actions of Dopamine excitatory or inhibitory, depending on receptors; plays a
role in emotions
PLEASURE; BLISS
Principal actions of Glutamate Usually excitatory; major excitatory neurotransmitter in
brain
Principal actions in Endorphins natural opiates that inhibit pain; usually inhibitory
Define concussion Blow to the head may lead to unconsciousness , disruption of electrical
activity in the brain, risk of subdural hematoma
, Define spinal cord injury impairment of sensation and function below site of injury
Define encephalitis inflammation of the brain caused by viral infection
Define meningitis inflammation of the meninges caused by viral or bacterial infection
Define rabies infectious viral disease spread by bite or saliva of infected animal, virus
spreads from bite to brain via sensory neurons
Define epilepsy recurring epodes of abnormal electrical activity (seizures)
Define Alzheimer's disease shortage of acetylcholine, accumulation of abnormal protein,
beta amyloid, progressive memory lapses and dementia
Define Parkinson's disease loss of dopamine - releasing neurons, progressive degenerative
disorder affecting motor activity
Define stimulus sensory input that causes some change within or outside the body
Verified by Experts
What is an action potential? An electrical impulse, primary means of communication
throughout the nervous system
Define neurotransmitter Binds to receptors on target membrane and opens gated channels
Define synapse special junction between axon terminus and target cell
Define synaptic cleft neurotransmitter diffuses across, space between neuron and receiver
Define synaptic transmission - Process of transmission of impulse from sending
(presynaptic neuron) across synaptic cleft to receiving (postsynaptic) target
- Involves release and diffusion of chemical neurotransmitter
Name 5 neurotransmitters Acetylcholine, Serotonin, Dopamine, Glutamate, Endorphins
,Principal actions of acetylcholine excitatory on skeletal muscles; excitatory or inhibitory
at other sites, depending on receptors
Principal actions of Serotonin usually inhibitory; involved in moods, sleep cycle, appetite
CONTENTMENT
Principal actions of Dopamine excitatory or inhibitory, depending on receptors; plays a
role in emotions
PLEASURE; BLISS
Principal actions of Glutamate Usually excitatory; major excitatory neurotransmitter in
brain
Principal actions in Endorphins natural opiates that inhibit pain; usually inhibitory
Define concussion Blow to the head may lead to unconsciousness , disruption of electrical
activity in the brain, risk of subdural hematoma
, Define spinal cord injury impairment of sensation and function below site of injury
Define encephalitis inflammation of the brain caused by viral infection
Define meningitis inflammation of the meninges caused by viral or bacterial infection
Define rabies infectious viral disease spread by bite or saliva of infected animal, virus
spreads from bite to brain via sensory neurons
Define epilepsy recurring epodes of abnormal electrical activity (seizures)
Define Alzheimer's disease shortage of acetylcholine, accumulation of abnormal protein,
beta amyloid, progressive memory lapses and dementia
Define Parkinson's disease loss of dopamine - releasing neurons, progressive degenerative
disorder affecting motor activity
Define stimulus sensory input that causes some change within or outside the body
