Random Shit

Question 1

red nucleus

Answer 1

Found in the midbrain - controls limb movements

Question 2

substantia nigra

Answer 2

Found in the midbrain - important in initiating movements, produces dopamine

Question 3

periacqueductal gray matter

Answer 3

Found in the midbrain - made up of cell bodies that surround the aqueduct joining the third and fourth ventricles, contains circuits controlling species-typical behaviors.

Question 4

Layers of cortex (functions)

Answer 4

1-3: Integrative functions - same thickness in motor & sensory cortex
4: Sensory input (afferent) - thicker in sensory cortex than motor cortex.
5-6: Output to other parts of brain (efferent) - thicker in motor cortex than sensory cortex

Question 5

How many layers are in the neocortex? How about the limbic (cingulate) cortex?

Answer 5

Neocortex - 6

Limbic Cortex - Three or four layers of gray matter atop a layer of white matter

Question 6

What three factors influence the movement of anions and cations into and out of the cell?

Answer 6

diffusion, concentration gradient, and charge.

Question 7

How long does an action potential last

Answer 7

1 millisecond