EXSC 224 Lab EXAM Questions and Correct
Answers
How many cranial nerves are there
12
How many spinal nerves are there
32
A bundle of intersecting nerves that exit the spinal cord is called?
Plexus
Collection of somas in CNS and PNS
CNS=Nuclei
PNS=Ganglia
Collections of axons in the CNS and PNS are?
CNS:Tracts
PNS:Nerves
PNS equivalent of astrocytes
Satellite cells
What cells support nerve regeneration
Schwann Cells
resting membrane potential
,-70mv
What must happen to the axon hillock to produce an action potential
It must be depolarized past threshold
Dopamine is always excitatory. T/F
F, it can be excitatory and inhibitory
Acetylcholine is always excitatory except in the heart where it is inhibitory. T/F
T
NE and Epinephrine can be excitatory and inhibitory. T/F
F
Dopamine is released from where?
The substantia nigra
What are the layers of nerves from superficial to deep.
Epineurium (surrounds nerve), Perineurium (surrounds fascicle), endoneurium (surrounds
neuron), Myelin sheath, axon.
Afferent neurons carry what type of information?
Sensory
Efferent neurons carry what type of information?
Motor
Nerve damage or disfunction can cause what?
, Numbness, tingling, pain, "falling asleep".
The 3 major divisions of the brain are?
The forebrain (Proencephalon), midbrain, and hindbrain.
The subdivisions of the proencephalon are?
the telencephalon and the diencephalon.
The telencephalon includes?
The cerebral cortex and the basal ganglia
The diencephalon includes?
The thalamus, hypothalamus, and pineal gland
Basal ganglia allow us to do what?
Learn motor skills
The four lobes of the cerebral cortex are?
Frontal lobe, parietal lobe, occipital lobe, and temporal lobe.
The Broca's area allows what?
The motor function of language
The Wernicke's area allows what?
The comprehension of language.
The primary function of the diencephalon is to?
Answers
How many cranial nerves are there
12
How many spinal nerves are there
32
A bundle of intersecting nerves that exit the spinal cord is called?
Plexus
Collection of somas in CNS and PNS
CNS=Nuclei
PNS=Ganglia
Collections of axons in the CNS and PNS are?
CNS:Tracts
PNS:Nerves
PNS equivalent of astrocytes
Satellite cells
What cells support nerve regeneration
Schwann Cells
resting membrane potential
,-70mv
What must happen to the axon hillock to produce an action potential
It must be depolarized past threshold
Dopamine is always excitatory. T/F
F, it can be excitatory and inhibitory
Acetylcholine is always excitatory except in the heart where it is inhibitory. T/F
T
NE and Epinephrine can be excitatory and inhibitory. T/F
F
Dopamine is released from where?
The substantia nigra
What are the layers of nerves from superficial to deep.
Epineurium (surrounds nerve), Perineurium (surrounds fascicle), endoneurium (surrounds
neuron), Myelin sheath, axon.
Afferent neurons carry what type of information?
Sensory
Efferent neurons carry what type of information?
Motor
Nerve damage or disfunction can cause what?
, Numbness, tingling, pain, "falling asleep".
The 3 major divisions of the brain are?
The forebrain (Proencephalon), midbrain, and hindbrain.
The subdivisions of the proencephalon are?
the telencephalon and the diencephalon.
The telencephalon includes?
The cerebral cortex and the basal ganglia
The diencephalon includes?
The thalamus, hypothalamus, and pineal gland
Basal ganglia allow us to do what?
Learn motor skills
The four lobes of the cerebral cortex are?
Frontal lobe, parietal lobe, occipital lobe, and temporal lobe.
The Broca's area allows what?
The motor function of language
The Wernicke's area allows what?
The comprehension of language.
The primary function of the diencephalon is to?
