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The Nervous System. Laura Bisbee, Erin Campbell, Sam Bruno. Three Main Parts of the Brian. Cerebrum Cerebellum Medulla Oblongata . Cerebrum. This is where conscious thought goes on Largest Part of brain Right half controls creativity Left half controls logic

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the nervous system

The Nervous System

Laura Bisbee, Erin Campbell, Sam Bruno

three main parts of the brian
Three Main Parts of the Brian
  • Cerebrum
  • Cerebellum
  • Medulla Oblongata
  • This is where conscious thought goes on
  • Largest Part of brain
  • Right half controls creativity
  • Left half controls logic
  • Its separated in to four lobes
      • Frontal lobe
      • Occipital lobe
      • Temporal lobe
      • Parietal lobe
temporal lobe
Temporal Lobe
  • Involved with hearing processing, speech and vision
  • Part of the limbic system, which controls emotion and memory
  • Long term Memories are formed here.
occipital lobe
Occipital Lobe
  • Where most visual processing happens
  • Damage to this lobe can cause Blindness and hallucinations
parietal lobe
Parietal lobe
  • Two main regions
    • First controls sensation and perception
    • The second Constructs a spatial coordinate system to represent the world around us.
frontal lobe
Frontal Lobe
  • This part of the brain is where your personality and emotions are controlled.
  • It is in the front f the head which makes it the most prone to injury of all the lobes.
  • Cerebellum means “little brain”
  • Its located in the back of the brain
  • Controls fine motor skills, posture and balance
  • Damage to the cerebellum can cause loss of balance and slurred speech
medulla oblongata
Medulla Oblongata
  • Lower part of the brain stem
  • Regulates vital body functions
  • Controls reflexes like swallowing and coughing
head injuries
Head injuries
  • Any trauma to the brain, skull or scalp
  • One of the most common causes of death to adults
  • Classified in two ways
    • Open – object broke skull and entered brain
    • Closed- Hard hit to head but did not break skull
head injuries cont
Head injuries cont.
  • Symptoms can range from mild to servre
  • Some common types
    • Concussion
    • Skull fracture
    • Intracranial hematoma
    • Contusion (Bruising)
treatment of head injures
Treatment of head injures
  • Based on age, type of injury and overall health
  • Types of treatment
    • Medication
    • Surgery
    • Repositioning
    • Fluid restriction
the spinal cord
The Spinal Cord
  • The spinal cord id the passage way from information to be transferred to the brain
  • It has five different type of nerves with in it:
    • Cervical nerves that give movement and feeling to arms, neck and upper torso
    • Thoracic- nerves give movement to the upper body muscles and arms
    • Lumbar nerves give feeling to the legs and feet
    • Sacral nerves that got to both send nerves to the legs along with the lumbar nerves, bladder, bowel, and reproductive organs
    • Coccyegal nerve give gives feeling to the tail bone and the area around
neuron impulse transition
Neuron Impulse Transition
  • Process of sending an impulse from brain
  • In order for this to happen their needs to be a change in charge.
steps of neuron impulse transition
Steps of neuron impulse transition
  • Polarization of neuron’s membrane - the inside of the membrane is negative and the outside is positive
  • Neuron stays at rest until stimulus.
  • Sodium ions move inside the membrane
  • Repolarization
  • Hyperpolarization: More potassium ions are on the outside than there are sodium ions on the inside
  • Refractory period

brain abscesses
Brain Abscesses
  • A collection of immune cells, pus and other material in the brain.
  • Caused by bacterial or fungal infections
  • Some Symptoms
    • Pain the upper and back and neck
    • drowsiness
    • slow thought process
    • seizures
    • loss of coordination and muscle function
    • If left untreated a coma
brian abscesses treatments
Brian Abscesses treatments
  • Medication
    • Medication can be used if the abscess small enough (less than 2cm)
  • Surgery
    • Surgery is needed is the medication is infective
    • In surgery the whole abscess will be taken out or a needle will be used to extract the fluid from the abscess
brian disorders and diseases
Brian disorders and diseases
  • ADHD-Attention-deficit hyperactivity disorder
  • Cerebral Palsy
  • Huntington’s Disease
  • Tay-Sachs Disease
  • People with ADHD can not handle certain chemicals in the brain such as dopamine, serotonin, and adrenalin.
  • These chemicals all are related to emotions and impulses
  • Symptoms :
    • being easily distracted
    • excessive talking
    • acting without thinking
  • Medications such as are used to treat ADHD:
    • Ritalin
    • Dexedrine
    • Adderall
cerebral palsy
Cerebral Palsy
  • Motor disorders that result from brain injuries
  • Effects the motor skills and ability to move
  • The damaged area in this disease is the cerebellum
  • Symptoms range from not being able to use scissors to not being able to balance while walking.
limbic system
Limbic System
  • This is the system of the brain that controls emotion and memory
  • It Includes :
    • The Hypothalamus
        • Deals with homeostasis
        • Controls thirst, hunger, anger, sexual behaviors
    • The Hippocampus
      • Converts from short term to long term memory
      • If damaged no more new memories can be formed
    • The Amygdala
      • Role in emotional and motivation behavior