Brain Geography

Question 1

How many lobes does each cerebral hemisphere have?

Answer 1

4

Question 2

What is the largest portion of the brain?

Answer 2

cerebrum

Question 3

What is the name of the gyrus that lie anterior to the central sulcus?

Answer 3

precentral gyrus (aka. motor cortex)

Question 4

The motor cortex (aka. precentral gyrus) is essential for the ability to perform _______ movements.

Answer 4

finely graded

Question 5

The cerebral cortex is made of _____.

Answer 5

grey matter

Question 6

What would an injury in Broca’s area result in, and which lobe is it part of?

Answer 6

• Broca’s aphasia: the impairment of expression through speech, writing or signs
• frontal lobe

Question 7

Whar is the name of the gyrus that lie posterior to the central sulcus?

Answer 7

postcentral gyrus (aka. sensory cortex)

Question 8

Which lobe is the motor cortex located in?

Answer 8

frontal lobe

Question 11

The sensory and motor cortex work on the ______ side of the body.

Answer 11

contralateral

Question 12

Which lobe is the sensory cortex located in?

Answer 12

parietal lobe

Question 13

The temporal lobe interprets ______ stimuli and also contains the ______ cortex.

Answer 13

auditory / olfactory

Question 14

What would damage to the temporal lobe result in?

Answer 14

Wernicke’s aphasia: the impairment of comprehension

Question 15

Where is the cerebellum located?

Answer 15

below the occipital lobes of the cerebrum and posterior to the pons and medulla

Question 16

What is stereognosis?

Answer 16

the ability to recognize objects by touch

Question 17

What does the occipital lobe interpret?

Answer 17

visual stimuli

Question 18

What is the purpose of the basal ganglia?

Answer 18

“background positioning”

- involuntary postural and proximal adjustments in order for fine distal skill to happen

Question 19

Where is the occipital lobe located?

Answer 19

posterior to the temporal and parietal lobes

Question 20

What is the tentorium cerebelli?

Answer 20

• strong horizontal fold of dura mater
• attached to falx cerebri
• separates the cerebellum from the occipital and temporal lobes

Question 21

What is the name for the “hills” lying between the sulci on the cerebral cortex?

Answer 21

gyri (sing. gyrus)

Question 22

What does the brain stem consist of?

Answer 22

• midbrain (superior)
• pons (intermediate)
• medulla oblongata (inferior)

Question 23

What is the main function of the brain stem?

Answer 23

vital life (functions of the ANS)

Question 24

Where is the site for most of the 12 cranial nerve nuclei?

Answer 24

brain stem

Question 25

What is the falx cerebri?

Answer 25

• veritcal fold of dura mater

- separates the two cerebral hemispheres

Question 26

What does the cerebellum function as?

Answer 26

centre for coordination of movements and maintenance of balance

Question 30

Where is the brain stem located?

Answer 30

superior to the spinal cord

Question 32

The cerebral cortex is divided by shallow grooves called ______ or deeper grooves called ______.

Answer 32

sulci (sing. sulcus) / fissures