Dorsal/Lateral

Question 1

Neurons

Answer 1

• Cells

- Appear gray

Question 2

Axons

Answer 2

• Fibers

- Appear white

Question 3

Glia

Answer 3

• Supportive tissue

Question 4

Longitudinal Fissure

Answer 4

Separates 2 hemispheres

Question 5

Corpus callosum

Answer 5

Band of white commissural fibers that joins the 2 hemispheres

Question 6

Commissure

Answer 6

Bundle of axons which connects structures in the 2 hemispheres

Question 7

Cerebral Cortex

Answer 7

the thin layer of gray matter forming the surface of the hemishpheres

Question 8

Gyri

Answer 8

folds

Question 9

Gyri are separated by groves called ____; some of the more important ____ are called ____.

Answer 9

• sulci
• sulci
• fissures

Question 10

Cruciate fissure

Answer 10

• Runs laterally from the longitudinal fissure so as to divide the hemisphere into and anterior third and posterior two-thirds

Question 11

What fissure is analogous to the central sulcus of the human brain?

Answer 11

cruciate fissure

Question 12

Superior frontal sulcus

Answer 12

• Runs forward from about the middle of the cruciate fissure to the rostral tip of the hemisphere
• Lateral boundary for the superior frontal gyrus

Question 13

Lateral fissure/fissure of Sylvius

Answer 13

• Begins on dorsal surface about half an inch behind later extremity of cruciate fissure and then divides into a short posterior ramus of the lateral fissure and a longer anterior ramus of the lateral fissure

Question 14

Suprasylvian sulcus

Answer 14

Arches over upper extremity of lateral fissure, its posterior limb extending backward toward the occipital pole

Question 15

Rhinal fissure

Answer 15

Marks horizontal boundary b/w the lateral and ventral surfaces and runs the length of the brain
- Separates neocortex from olfactory cortex

Question 16

Frontal lobe

Answer 16

• Part of hemisphere anterior to cruciate fissure

- Control of motor functions

Question 17

Parietal lobe

Answer 17

• Includes one-half of dorsal surface behind the cruciate fissure and above suprasylvian fissure
• Somatosensory cortex
• Processes info such as touch, pain, and temperature

Question 18

Occipital lobe

Answer 18

• Occupies posterior end of hemisphere and processes visual info

Question 19

Temporal lobe

Answer 19

• Separated from parietal lobe above by the posterior two-thirds of the suprasylvian fissure
• Involved in hearing and vision

Question 20

Insula

Answer 20

• Area enclosed b/w diverging anterior and posterior rami of the lateral fissure and rhinal fissure
• Insular cortex mediates taste