Appendix B

Question 1

Medulla Oblongata (M.O.)

Answer 1

Inferior to Pons

Pyramids and Olives are important landmarks

Vital for breathing and cardiovascular control

Contains all ascending and descending neuron fibers

Question 2

Pons

Answer 2

Superior to M.O.

C.N. #V (trigeminal) is apparent on lateral surface

Along with M.O. forms ventral wall of 4th ventricle

Adapted for integration and relay between cerebellum and cerebrum

Question 3

Midbrain (Mesencephalon)

Answer 3

Area immediately around cerebral aqueduct (passageway between 3rd and 4th ventricle)

Posterior to aqueduct is the tectum

Tectum has many parts, important being two superior and inferior colliculi (a.k.a. corpora quadrigemina)

Ventral to aqueduct is Cerebral Peduncles (a.k.a the crus) which is also full of descending motor fibers

coordinates small reflexes of head dealing with movement and sound

Question 4

Diencephalon

Answer 4

Includes the thalamus, pineal body, hypothalamus (H.T.), massa intermedia, 3rd ventricle, and mammilary bodies.

Is a neuron relay center as well as control over autonomic and endocrine functions

Question 5

Telencephalon

Answer 5

Composed of frontal, parietal, temporal, occipital, pyriform, limbic, and insular lobes.

Question 6

Frontal lobes (rt. and lt.)

Answer 6

largest lobes

major gryi include precental, superior, middle, and inferior.

separated from parietal lobe by cental sulcus (of Rolando)

separated from temporal lobe by lateral cerebral sulcus (Sylvian sulcus)

corpus callosum connects rt. and lt. hemispheres (a.k.a. commisure)

best known for thought elaboration and initiation of voluntary motor functions

Question 7

Parietal lobes (rt. and lt.)

Answer 7

Holds post central gyrus, superior and inferior parietal lobules.

inferior lobule mainly supramarginal andangular gyri

parietal-occipital sulcus separates from occipital lobe

one feels light and deep touch, pain,temperature changes, and kinesthetic input.

associates inputs from other lobes to allow skillslike reading and writing

Question 8

Occipital lobes (rt. and lt.)

Answer 8

small lobes divided into superior and inferior by calcarine sulcus

cuneus above sulcus and lingual below

sight and memory of past experience received, built, stored,and associated here.

other lobes depend on this transfer for proper function

Question 9

Temporal lobes (rt. and lt.)

Answer 9

divided into superior, middle, and inferior gyri

holds hippocampal formation when viewed medially

auditory reception, interpretation, memory centers, and behavior mechanism function here.

behavior mech. located along hippocampal formation

deep lateral (sylvian) sulcus seperates it from frontal lobe

uncus is olfactory interpretation center

Question 10

Cerebellum

Answer 10

Embryologically part of hindbrain (rhombencephalon)

separated from occipital lobes by tentorium cerebelli which is in a space called the horizontal cerebral fissure

major in maintaining muscle tone and making sure that voluntary movements are effective

DOES NOT initiate voluntary movements but helps make them smooth and harmonius