Chapter 2 Flashcards
When secreted, neuromodulators affect
Cluster of neurons
The ____ lobe is the somatosensory area of the brain
Parietal
Nerotransmitters are detected by the receiving neuron at specific positions on the cell membrane called ______.
Receptor sites
Neurons contain more ____ charged ions compared to extracellular fluids.
Negatively
The process specialized to conduct a nerve impulse called the ____.
Axon
Supporting cells in the brain are called ____ cells.
Glial
A decrement in the effectiveness of the drug as a result of repeated administration is called ____.
Tolerance
The ____ lobe is the motor area of the brain
Frontal
The _____ is the bodies master gland, and it’s controlled by the _____.
Pituitary gland/hypothalamus
Chemical messengers are stored in the axon terminal in small spheres called ____.
Synaptic vessels
Brain cells that conduct nerve impulses are called ____.
Neurons
The _____ extends outward from the cell body to increase the surface area available for receiving signals from adjacent neurons
Dendrite
The ____ branch of the ANS restores the body’s energy reservoirs.
Parasympathetic
When sodium ion channels open the neurons becomes _____ polarized.
Less
An increase in the potency of a drug as a result of repeated administration is called ____.
Sensitization
The ____ nervous system is encased in bone, while the _____ nervous system is not.
Central/peripheral
Neurotransmitter molecules disturb the resting potential of the receiving neuron by opening ____.
Ion channels
The gap between axons and dendrites is called the ____.
Synaptic cleft
In addition to the presence of absence of myelin, the speed of nerve conduction is governed by the ______ of the axon.
Diameter
The triggers nine for the initiation of a nerve impulse is that the ____.
Axon hillock
The brain comprises 2% of our body weight, but consumes ____ of our calories
20%
Response is regulated by ____ are sluggish relative to his response is regulated by ____.
Hormone/neurotransmitters
_____ is a decreed meant in the resting potential
Depolarization
Language behavior is lateralized to the ____ hemisphere in most people.
Left
The fact that all or most neurons fire randomly while at rest is called the?
Spontaneous activity
The _____ lobe is the visual area of the brain
Occipital
The resting potential, the polarity inside of a neuron when it is not being stimulated father sales is about?
-70mV
The _____ is the auditory area of the brain.
Temporal
The metabolic machinery needed to power the cell is located in the ____.
Soma
Hyperpolarization is produced by the _____ synapses.
Inhibitory
The idea that action potentials are always the same quantal magnitude is known as the _____ law.
All or none
Depolarization is produced by ____ synapses.
Excitatory
