CNS- The brain

Question 1

What 2 tissues is the CNS composed off
-what does each tissue contain

Answer 1

-white matter (myelinated axons)
-grey matter(cell bodies, dendrites, unmyelinated axons)

Question 2

1. Hindbrain
   -control center for what
   -what parts does it consist of (3)

Answer 2

-basic life activites (breathing, heartbeat, blood pressure)
-medulla oblongated, pons, celebellum

Question 3

1.1 : Medulla oblongata
-what is it (2)
-what does it control

Answer 3

-first extension from spinal cord, relay center of incoming/outgoing info
-autonomic functions

Question 4

1.2: Cerebellum
located where
-what type of matter
-receieves input from what, where are they located
-function

Answer 4

behidn the medulla
-grey and white matter
-recieves input from sensors called proprioceptors located in skeletal muscles and joints
-movement and balance (fine control, posture, pressure, equillibrium)

Question 5

1.3: Pons
located where
has part of what control system
function

Answer 5

between medulla and midbrain
breathing
relayes messages from cerebellum to parts of cerebrum, midbrain, and other hindbrain centres

Question 6

2. Midbrain
   -located where
   -relayaes what info and where
   made up of 4 _______ which are relay centers for what reflexes

Answer 6

above the pons
audio and visiual information between hindbrain and forebrain
bundles of grey matter for eyes and ears reflexes

Question 7

3. Forebrain
   3.1: Thalamus (relay station of brain)
   located where
   -relayes which 2 impulses, describe locations from where to where
   -what does it affect

Answer 7

above the midbrain
-sensory impulses to the cerebral cortext
-motor impulses from the cerebral cortex to the spinal cord
-conciousness and perception of pain

Question 8

3.2: Hypothalamus
-control center for vital fucntions of what (3)
-connected to and controls ______ ______ which controls what system

Answer 8

-autonomic nervous system, basic drives (hunger, thirst, sex), and emotions (rage, aggression, pleasure)
-the pituitary gland, endocrine

Question 9

3.3: Cerebrum
-what is it
-consists of right and left ______ _______, what are they responsible for?
-what is the corpus callosum and what does it do
-what is the group of neurons under the corpus callosum and what does itdo

Answer 9

-the largest part of brain (4/5)
-right and left cerebral hemispheres
-the corpus callosum is a thick band of nerve fibers that facilitates communication between the hemispheres
-basal nuclei which helps for motor coordination