Test 5

• Adult human brain


  Contains almost 97% of body's nervous tissue
• Gyri


  Rounded elevations
• Cerebellum


  Coordinates repetitive body movements
• Thalamus


  Relays and processes sensory information
• Pituitary gland


  Integrates nervous and endocrine systems
• Each cerebral hemisphere contains


  One large lateral ventricle
• Each cerebral hemisphere is seperated by


  Medial partition (septum pellucidum)
• Dural folds


  Contain collecting veins (dural venous sinuses)
• Tentorium cerebelli


  Separates cerebrum from cerebellum
• Hydrocephalus (water on the brain)


  Problems with resorption in infancy causes
• Blood supply to the brain


  Internal carotid arteries and vertebral arteries
• Pons contains


  Nuclei involved with respiration
• Arbor vitae ("tree of life")


  Highly branched, internal white matter of cerebellum
• Thalamic nuclei


  Relay sensory information to basal nuclei and cerebral cortex
• Anterior nuclei of thalamus


  Part of limbic system (emotions)
• Medial nuclei of thalamus


  Provide awareness of emotional states
• Mammillary bodies


  Control reflex eating movements
• Functions of hypothalamus


  Regulates circadian rhythms (day-night cycles)
• Suprachiasmatic nucleus


  Subconscious control of skeletal muscle
• Broca's area (motor speech area)


  Speech production
• Delta waves


  Occurs in awake adults with brain damage
• Seizure


  - A temporary cerebral disorder

  - Symptoms depend on region of cortex affected
• Optic nerves (II)


  Special sensory (vision)
• Trigeminal nerves


  Three major divisions
• Bell's palsy


  Cranial nerve disorder resulting from inflammation of facial nerve
• Vestibulocochlear nerves (VIII)


  - Balance and equilibrium

  - Hearing
• Accessory nerves (XI)

  Sternocleidomastoid