Brain Structure - Brain Theory from a Circuits and Systems Perspective - page 15

(l) Hippocampus
(m) Substantia Nigra
(n) Thalamus
(o) Hypothalamus
(p) Olfactory Bulb
(q) Amygdala
(r) Cingulated Gyrus
(s) Corpus Callosum
2. Approximately how many of the following occur in an adult brain?
(a) Neurons (ANS. about 100 billion)
(b) Glial Cells (ANS. about 100 billion)
(c) Synapses (ANS. about 500 trillion in an adult brain)
(d) Sensory Inputs (ANS. One million in parallel)
3. For each of the following items relating to the forebrain, indicate briefly a
location, and as appropriate, the structure, and a rough indication of the number
of neurons involved.
(a) Cerebral Cortex (HINT: The chapter calculated about 25 billion neurons
structured into various columns)
(b) Corpus Callosum (HINT: About 250 million axons connecting left and right
brains)
4. State briefly what each of the following refers to. (HINT: Refer to this chapter.)
(a) Six Layers
(b) Mini Columns
(c) Macro Columns
(d) Brodmann Areas
(e) Glial Cells
(f) Gray Matter
(g) White Matter
(h) Distributed Model
Neurons
5. Explain briefly the purposes of each of the following parts of a neuron as
presented in this chapter. (HINT: Refer to this chapter.)
(a) Boutons
(b) Axon
(c) Axon Hillock
(d) Soma
(e) Dendrite