L34 Diencephalon & brain stem

• what is thalamus and its main function

  -large ovoid mass of grey matter

  -act as major relay station of sensory impulses
• state 3 centres connected to thalamus

  -visual

  -auditory

  -gustatory
• state 3 role of thalamus

  -autonomic control (size of pupil)

  -body temperature regulation

  -control endocrine system functioning
• state 4 components of diencephalon

  -epithalamus

  -hypothalamus

  -subthalamus

  -thalamus
• draw and label brainstem with cranial nerves

  A) II

  B) III

  C) IV

  D) V

  E) VII

  F) VI

  G) VIII

  H) XII

  I) IX

  J) X

  K) XI

  L) pyramid

  M) olive

  N) mammillary body

  O) optic chiasm

  
• explain PICA syndrome

  -PICA stands for Posterior Inferior Cerebrum Arteries

  -Involves cranial nerves IX, X, XI

  -difficulty in swallowing

  -change in speech (bulbar syndrome)