Nervous Tissue
Which division of the motor branch sends messages to the external environment?
somatic
When the membrane potential reaches +30mV, what happens to the potassium gates?
open
Which meninge is the middle spider web-like covering?
Arachnoid mater
Inflammation of the brain is called ___________.
encephalitis
How many spinal nerve pairs are there?
31 pairs
Which neuronal processes are multiple extensions of the cell body?
dendrites
The conduction of a nerve impulse down a myelinated axon is called _________.
saltatory conduction
Which part of the brain stem is the most inferior?
Medulla oblongata
Where is the most complicated association area located?
Prefrontal cortex (anterior of the frontal lobe)
What composes the white matter of the spinal cord?
Myelinated axons
Which structural group of neurons is rare and found in special sensory organs (nose,eye)?
bipolar
The entrance of calcium into the axon terminal triggers what event?
fusion of the vesicles with the cell membrane to release the neurotransmitter into the synapse
What is the name of the worm-like connection between the cerebellar hemispheres?
vermis
About how often does REM sleep occur during the sleep period?
About every 45-90 minutes
What is the name of the clusters of cell bodies of motor neurons going out of the spinal cord to the visceral organs?
Lateral horn
Which type of PNS supporting cell wraps the whole cell around the nerve fibers?
Schwann cells
How does the botulinum toxins affect ACh?
They inhibit the release of ACh causing paralysis (skeletal muscles don’t contract unless a nerve tells them to via a neurotransmitter)
What connects the two hemispheres to allow communication?
corpus callosum
Name the four types of brain waves that could be on an EEG:
alpha, beta, delta, theta
If the spinal cord is damaged in the cervical area, what occurs?
quadriplegia
Which type of CNS supporting cell forms the blood-brain barrier?
astrocytes
Which amino acid neurotransmitter is released in large amounts during a stroke?
glutamate
Which diencephalon region regulates blood pressure, heart rate, body temperature, digestion, sleep, water levels, pleasure, fear, rage, and hormomes?
hypothalamus
Where are learned procedural skills usually stored?
hippocampus
What is the name of the spinal cord area containing sensory neuron axons entering the spinal cord?
Dorsal root