brain anatomy and fucntion

Question 1

what are the 7 main parts of the CNS

Answer 1

• spinal cord
• medulla oblong at a
• pons
• cerebellum
• mid brain
• diencephalon
• cerebral hemispheres

Question 2

spinal cord

Answer 2

• provides a 2 way conducting pathway to and from the brain
• ascending tracts and descending tracts
• major reflex centre

Question 3

medulla oblong at a

Answer 3

• this is part of the brain stem
• contains several centres responsible for vital autonomic functions
• contains nuclei which are associated with ascending sensory tracts of the spinal cord
• contains nuclei which relay info on state muscle stretch to the cerebellum

Question 4

pons

Answer 4

• part of the brain stem
• conveys information between cerebral hemispheres and the cerebellum
• contains respiratory nuclei which cooperate with the medulla nuclei to control respiration ( inspiration and expiration)

Question 5

cerebellum

Answer 5

• modulates the force and range of movements
• involved in learning motor skills
• connected to the brain stem but not part of the brain stem

Question 6

mid brain

Answer 6

• controls sensory and motor functions
  including eye movement and the co ordination of visual and auditory reflexes

Question 7

diencephalon

Answer 7

• contains two mains structures
• thalamus and hypothalamus

thalamus
- processes information ascending the cerebral cortex and mediates sensation, motor activities and cognition proceseses

hypothalamus
- mains control centre of the body for homeostatsis

also contains the limbic system which is used for fear

Question 8

cerebral hemispheres

Answer 8

• contains our conscious mind. where executive functions are carried out
• motors areas that controls voluntary movement
• contains sensory areas that provide conscious awareness of sensations
• contains areas that integrate info for purposeful actions