Exam 1 Flashcards
Which tissue produces cerebrospinal fluid?
Choroid plexus
The _____ lobe is mainly responsible for processing touch and pressure information.
Parietal
Where is the primary motor cortex found?
The precentral gyrus in the frontal lobe
The ____lobe is primarily responsible for processing auditory information.
temporal
Where are the nodes of Ranvier located?
unmyelinated regions of myelinated axons
The white matter of the spinal cord contains_____.
Myelinated axons
The gray matter of the spinal cord contains ____ and _____.
Cell bodies; dendrites
Name an advantage of myelination.
conduction speed and energy conservation
Which kind of synapse produces presynaptic inhibition?
axoaxonic
What does presynaptic inhibition do?
reduces neurotransmitter release when an action potential arrives
______produce myelin in the central nervous system.
Oligodendrocytes
The central nervous system consists of the ______ and ________.
brain; spinal cord
What organelle in the soma synthesizes protein?
ribosomes
Which glial cells comprise part of the blood-brain barrier?
astrocytes
Which ion enters when a neuron reaches the threshold of excitation?
sodium (Na+)
During a resting potential, there is a high concentration of positive _____ ions inside a neuron.
potassium
Where does integration mainly occur on multipolar neuron?
axon hillock
What is integrated at the axon hillock?
EPSPs and IPSPs
The threshold of excitation is about _____ mV.
-40
______ remove debris and act like immune cells.
Microglia
What is the most common method for terminating the action of a neurotransmitter?
reuptake
What do mitochondria provide for cells like neurons?
ATP
Which type of receptor contains receptor sites surrounding a central pore?
Ionotropic
Which ion movements produce an IPSP?
K+ or Cl- in
