AG 502 Anatomy 2
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| occipital lobe | vision; integrating primary vision with other senses
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| insular lobe | visceral functions, integrates autonomic info, motormemory
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| limbic system | motivation, sex drive, emotional behaviour, memory, affect
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| hypothalamus | homeostasis
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| hippocampal formation | memory (Alzheimer's)
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| amygdala | emotions and drives
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| basal ganglia | motor learning, control of motor skills
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| commissural fibres | between hemispheres ex: corpus callosum
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| association fibres | within a hemisphere ex: arcuate fasiculus
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| projection fibres | between cerebrum and neuroaxis ex: uncuate fasiculus
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| internal capsule | very important projection fibres
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| thalamus | major sensory relay center, adds emotion to sensations; arousal, attention, sleep/wake cycles;all senses except smell stop here on the way to conscious awareness
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| mamillary bodies | important for memory, easily damaged by alcohol
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| pineal body | gonad development, produces melatonin
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| hypothalamus | control center for autonomic NS, links NS to endocrine system
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| subthalamus | relay station in sensory motor control of voluntary movements
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| reticular formation | alertness, focus attention, monitors input to thalamus
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| superior colliculi | vision; visual reflexes
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| inferior colliculi | auditory; auditory reflexes
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| substantia nigra | produces dopamine; damage here = Parkinson's
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| oculomotor nerve | (m) lift the eyelid/control position of eyeball; pupil constriction
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| basilar pons | relay between cortex and cerebellum; forms peduncles
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| posterior pons | CN nuclei for trochlear(m), trigeminal(s/m), abducens(m)
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| trochlear nerve | (m)moves eyeball down and out
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| trigeminal nerve | (s)face, scalp, teeth, front 2/3 of tongue, soft palate (m)mandibular area
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| abducens nerve | (m)moves eyeball inward
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| facial nerve | (m)to striated muscles of facial expression(s)glands, taste buds, external ear & tympanic membrane
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| vestibulocochlear nerve | (s)hearing and balance
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| cerebellum | monitors skilled motor behaviour; corrects mismatches in muscle coordination
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| archicerebellum | sense body position; balance
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| paleocerebellum | posture; gross movement of limbs
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| neocerebellum | precision of force, direction and extent of voluntary movements
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| peduncles | carry fibres from one place to another
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| olives | (gray matter) info about where body parts are in relation to themselves
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| pyramidal decussation | 80 - 85% of fibres cross over here
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| glossopharyngeal nerve | (s)back 1/3 of tongue, tonsils, middle ear
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| vagus nerve | (m)laryngeal muscles, smooth muscles(s)throat & ear, soft palate
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| accessory nerve | (m)trapezius and sternocleidomastoid
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| hypglossal nerve | (m)muscles of the tongue
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| phrenic nerve | innervates the diaphragm (m) and (s)
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| brachial plexus | C5 - T1 muscles and skin of chest and upper limbs
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| lumbarsacral plexus | trunk and lower limbs
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| receptors | detect and respond to changes in internal and external environment
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| exteroreceptors | mediate sight/sound/smell/balance/touch
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| proprioreceptors | deep body sensation; our body parts in relation to space and each other
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| 2-point discrimination | "tell me when you feel two pricks"
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| stereognosis | ability to recognize object through touch alone
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| reflex | behaviour that is not cortically mediated
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| cortical override | consciously controlling reflexes
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| corticobulbar tracts | from the cortex to the brain stem & vice-versa
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| cervical plexus | C1, C2, C3, C4
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