Sensory Neuro Flashcards
What is the primary function of CSF
cushion the brain and protect brain tissue from injury
Cerebrum
- largest portion of brain
- cerebral cortex
- responsible for all conscious behavior, enables individual to perceive, remember, communicate, and initiate voluntary movements
- frontal, parietal, occipital, and temporal loves
Frontal Lobe of cerebrum
- controls voluntary skeletal movement, speech, emotions, and intellectual activity
- prefrontral cortex controls intellect, complex learning abilities, judgement, reasoning, concern for others, abstract thoughts
- located at front of head
- Alcohol affects area of brain and takes away ‘filter’ and morals
Parietal Lobe of Cerebrum
- responsible for conscious awareness of sensation, somatosensory stimuli including temperature, pain, shapes, and 2 point discrimination, touch, pressure, vibration, sharp vs dull
- located in middle of head between frontal and occipital lobes
- Proprioception (do you know where your body parts are right now)
Occipital lobe of Cerebrum
- located at back of skull
- visual cortex recieves stimuli from retina and interprets visual stimuli in relation to past expierences
Temporal Lobe of Cerebrum
- Located by each ear
- responsible for interpreting auditory stimuli
- olfactory cortex is in this love and transmits impulses r/t smell
- Superior temporal gyrus
- Wernikes Area: reception of speech
- CN8 (acoustic nerve) hears for you and superior temporal gyrus interprets sound
Diencephalon
-contains thalamus, hypothalamus, and epithalamus
Hypothalamus of Diencephalon
- autonomic control center, influences bp, pulse, force of heart contraction, digestive motility, respirations, pain perception, pleasure and fear
- temperature,food intake, water balance and sleep cycles
Epithalamus of Diencephalon
- helps control moods andsleep cycles
- choroid plexus where CSF is formed
Cerebellum
- located below cerebrum, behind brainstem
- skeletal muscle coordination and smooth movements
- maintains equilibrium and muscle tone
Brainstem
- contains midbrain, pons, and medulla oblongata
- autonomic control center, influences BP by vasocontricton, respiratory rate, depth, vomitting, hicupping, swallowing, coughing and sneezing
- cardiorespiratory center
_________ is key to neuro
Symetry
Right precentral gyrus of Frontal Lobe controls:
Left precentral gyrus of Frontal Lobe controls:
Left Side
Right Side
Upper Motor Neurons (UMN)
- neurons located in precentral gyrus
- contralateral control
Wernicke’s Aphasia
- Talk normal grammar, rate and intonation but cannot properly express self using language
- usually unaware of how they are speaking and not realize it doesn’t make sense.
- Caused by injury to that area of brain on Left side
Jargon Aphasia
- incomprehensible, make sense to the individual.
- Has problems selecting right words, may use similar work with similar sound or just a sound to replace words
Auditory Agnosia
- inability to recognize or differentiate between sounds. It -neurological inability of the brain to interpret sound correctly
- Car motor starting, patient may describe it as lion roaring. Unable to make the connection that its a car engine.
- caused by damage to auditory cortex in temporal lobe
Cranial Nerve 0
- Nervus Terminalis
- connects to hypothalamic region of sexual function
- pheromones
Cranial Nerve 1
- Olfactory
- sense of smell located in temporal lobe
Cranial Nerve 2
- Optic
- Vision
Cranial Nerve 3
- Oculomotor
- Pupillary reflex
- muslce movement of eye
Cranial Nerve 4
- Trochlear
- eye muscle movement
Craninal Nerve 5
- Tigeminal
- 3 branches: ophthalmic branch, maxillary branch and mandibular branch