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39 Cards in this Set
- Front
- Back
- 3rd side (hint)
Saggital Plane |
divides body into L & R |
between the eyes |
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Transverse Plane |
Divides body into Superior & Inferior |
through the torso |
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Coronal Plane |
divides body into Ventral & Dorsal |
elevator doors |
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Anterior vs Posterior |
Ant: Nose Post: tail |
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Proximal vs Distal |
Prox: Near center Distal: Far from center |
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Cranial vs Caudal |
Cranial: toward the head Caudal: toward the tail |
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Afferent vs Efferent |
Afferent: toward CNS Efferent: away from CNS |
A is for Approach E is for Exit |
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CNS |
Central Nervous System Brain & Spine |
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PNS |
Peripheral Nervous System nerves emerging from CNS |
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Dendrites |
carry nerve impulses into cell body |
Afferent |
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Axons |
conduct nerve impulses away from cell body |
Efferent |
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What carries info across synaptic clefts? |
Neurotransmitters |
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Myelin |
~ insulates axons of nerves ~ speeds nerve impulses ~ grows until late childhood
~ damage → srs neuro probs (MS) |
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3 Anatomical Divisions of Brain |
1. Cerebrum 2. Cerebellum 3. Brainstem |
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Brainstem (structure) |
1. Diencephalon 2. Mesencephalon 3. Reticular Formation 4. Pons 5. Medulla Oblongata |
5 components |
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Diencephalon |
Part of Brainstem ● Thalamus: integrates sensory info ● Hypothalamus: regulates emotion & motivation |
2 parts |
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Mesencephalon |
Middle part of Brainstem
● Relay & Reflex centers for Aud f(x) ~ inf. colliculus controls auditory reflexes (adjusting ear to loudness of a sound) |
aka Midbrain Used at Mastodon Concert |
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Reticular Formation |
Runs⬆&⬇Brainstem ● Primary mech for attn & consciousness ● integrates sensory impulses flowing INTO, & motor impulses flowing OUT of the brain |
"got the booty goin' UP... DOWN" |
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Pons |
Part of Brainstem ● in front of cerebellum ● Connects Cerebellum halves & each half w/ opposite-side's cerebral hemi ● links cortex & medulla |
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Medulla |
stem of Brainstem ● Controls breathing ● Site where sensory & motor nerve fibers cross to opposite sides (contralateral innervation) |
contralateral innervation |
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Brainstem (functions) |
● 1st step in Information Processing ● Sorts/Directs nerve impulses to apropriate higher centers of brain |
sorting hat of the brain |
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Cerebellum |
● lies behind brainstem & below Cerebrum ● regulates equilibrium, coordinates fine motor movements
● damage → often significant & resistant to therapy (dysarthria) |
little brain |
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Pyramidal System |
● provides structural basis for volitional movements ~ control & speed of fine motor movements (like speech) ● postural control as well (breath support) |
pyramids are strong as the shape provides structure & support |
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Extrapyramidal System |
● Connects cerebral cortex, basal ganglia, and thalamus ● targets neurons involved in reflexes, locomotion, complex movements & postural control ~ involuntary movements |
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Longitudinal Fissure |
delineates L & R hemis |
Saggital |
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Fissure of Rolando |
separates Frontal & Parietal lobes |
Rolando's headband |
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Fissure of Sylvius |
defines upper border of Temporal lobe |
Sylvius separates speech centers |
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Gyri vs Fissures |
Gyri = grooves on cortex Fissures = valleys on cortex |
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Meninges |
Sheaths & protects cerebrum & spinal cord |
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Association Fibers |
connect areas w/in the same hemi |
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Commissural Fibers |
connect corresponding areas in L&R hemis |
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Projection Fibers |
connect CNS w/cortical sensory & motor areas |
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Internal Carotid Artery |
supplies blood to areas of the brain involved in speech & Iang |
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Lobes of Brain |
1. Frontal 2. Parietal 3. Occipital 4. Temporal |
4 |
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Frontal Lobe |
● Activates & controls fine motor activity ● Controls executive f(x)
● Motor Cortex: control lip, jaw, tongue & Larynx movement ● Broca's Area (speech coordination) |
2 things it controls 2 areas of note |
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Parietal Lobe |
● Perceives perceptual info (touch, temp, pressure) ● Involved in comp of oral & written lang |
2 things it does |
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Temporal Lobe |
● Auditory Cortex: interprets auditory info from both ears ● Wernicke's Area: language comprehension |
2 Areas of note |
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Occipital Lobe |
Receives / Processes visual info |
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Where is the first step in info processing? |
the brainstem |
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