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47 Cards in this Set
- Front
- Back
what is gray matter of the CNS? |
-gray because of cell bodies, dendrites, and synapses |
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what is white matter of the CNS? |
-white because of myelinated axons, high fattyness |
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draw the frontal section of the brain |
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draw the transverse section of the spinal cord |
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describe the cerebral cortex |
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what are the two important locating landmarks in the cerebral cortex? |
-lateral sulcus -central sulcus |
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what are the lobes/cortex areas of the cerebrum? |
-frontal lobe -parietal lobe -occiptal lobe -temporal lobe |
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what are the sensory areas of the cerebral cortex? |
olfactory - smell gustatory - taste somatosensory - sense of touch |
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where and what is the somatosensory cortex? |
postcentral gyrus -aka sensory homunculus (little man) -parts of the body light up on these parts -left half of body mapped to right side of cortex, reverse for right -bigger surface is more representation |
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where and what is the motor cortex? |
precentral gyrus -aka motor homunculus -where all muscle contractions originate -right muscles mapped to left side, reverse for left -bigger surface is more repres. --need more fine movements |
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what does the blood-brain barrier do? |
protects the CNS from endo- and exotoxins |
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describe the blood-brain barrier |
-vomiting center location allows the blood-brain barrier to know there are toxins in blood |
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draw the blood-brain barrier |
-astrocytes causes tight junctions to tighten up |
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describe the spinal cord |
mixed spinal nerve - carries afferent and efferent info, sensory and muscle |
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draw the spinal cord |
afferent - bipolar, pseudounipolar efferent- multipolar |
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draw the flowchart of the cranial nerves |
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draw the forebrain cranial nerve flowchart |
-unique -relay information directly to forebrain |
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draw the oculomotor cranial nerve flowchart |
-controls motions of eye |
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draw the trochlear cranial nerve flowchart |
-controls motions of eye |
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draw the trigeminal cranial nerve flowchart |
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draw the abducens cranial nerve flowchart |
-controls motions of eye |
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draw the facial cranial nerve flowchart |
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draw the vestibulocochlear cranial nerve flowchart |
-if cut lose all hearing and sense of of balance/equilibrium |
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draw the glossopharyngeal cranial nerve flowchart |
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draw the vagus cranial nerve flowchart |
"Vegas" -vagabond, wanders throughout body |
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draw the accessory cranial nerve flowchart |
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draw the hypoglossal cranial nerve flowchart |
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draw the reflex arc flowchart |
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what is a reflex? |
automatic response to a sensory stimulus
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draw the efferent pathway reflex flowchart |
-autonomic: no control -somatic: controlling skeletal muscle |
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draw the integration location reflex flowchart |
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draw the synapse number reflex flowchart |
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draw the when developed reflex flowchart |
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what is the muscle spindle stretch reflex |
knee jerk reflex |
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what is the only monosynaptic reflex? |
knee jerk reflex/muscle spindle stretch reflex |
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examples of reflex organizations |
muscle spindle reflex is a: congenital, somatic, spinal cord, monosynaptic reflex heart beat: congenital, autonomic, polysynaptic |
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draw the flowchart of the knee-jerk reflex |
aka muscle spindle stretch reflex |
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draw the neural connections of the knee-jerk reflex |
1) tap on the patellar 2) goes up to afferent pseudounipolar neuron + means EPSP - means IPSP |
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why do we have a muscle spindle stretch reflex? |
-helps maintain body position (muscle reacts against pushing and shoving)
happens in many muscles across entire body
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monosynaptic means? |
afferent and efferent neuron are directly connected
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draw the flowchart of the withdrawal reflex |
-causes your body to pull away |
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draw the neural connections of the withdrawal reflex |
-goes to brain too, but brain isn't making the decision to pull away |
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why do we sleep? |
not sure exactly why |
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what are the types of sleep? |
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chart of the stages of sleep |
8 hour sleep cycle
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write this table |
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