Chp 13 Cerebrum

Question 0

What are convolutions of the cerebrum separated by sulci?

Answer 0

Gyri (pg. 78)

Question 1

What is the largest part of the brain forming 2 hemispheres?

Answer 1

the cerebrum (pg. 78)

Question 2

The cerebrum contains various large what?

Answer 2

fissures & large sulci (pg. 78)

Question 3

What is one of the 4 major fissures that separate the right and left hemispheres and is occupied by the falx cerebri?

Answer 3

The longitudinal fissure (pg. 78)

Question 4

Out of the 4 fissures which one separates the cerebrum and cerebellum and is occupied by the tentorium cerebelli?

Answer 4

The transverse fissure or sulcus (pg. 78)

Question 5

Which of the 4 major fissures separates the temporal lobe from the rest of the cerebrum superior to it?

Answer 5

The lateral fissure or sulcus (pg. 78)

Question 6

Which of the 4 major fissure/sulcus separates the pre-central (motor) and post-central (sensory) gyri?

Answer 6

The central sulcus (pg. 78)

Question 7

What are the 4 main lobes of the cerbrum?

Answer 7

Frontal
Parietal 
Occipital 
Temporal
(pg. 78)

Question 8

What is the 5th lobe of the cerebrum that lies within the depths of the lateral sulcus?

Answer 8

The insula (pg. 78)

Question 9

What is the primary motor cortex of the cerebrum?

Answer 9

The pre-central gyrus (pg. 79)

Question 10

Where is the pre-central gyrus located?

Answer 10

anterior to the central sulcus (pg. 79)

Question 11

What is the primary sensory cortex?

Answer 11

the postcentral gyrus (pg. 79)

Question 12

Where does the postcentral gyrus lie?

Answer 12

posterior to the central sulcus (pg. 79)

Question 13

What constitutes the central gray matter of the cerebrum?

Answer 13

The basal ganglia (nuclei) (pg. 79)

Question 14

What does the basal ganglia do?

Answer 14

They control movement and posture. This is where diseases such as Parkinson’s and Huntington’s chorea cause disturbances in voluntary muscular control. (pg. 79)

Question 15

What is the most important sensory relay center of the brain that sends incoming impulses from the receptors of the body to the cerebral cortex?

Answer 15

The Thalamus (pg. 79)

Question 16

What structure lies between and is associated with the optic chiasma, mammillary bodies, and pituitary gland?

Answer 16

The hypothalmus (pg. 79)

Question 17

Where do optic nerves (CN II) cross?

Answer 17

Optic chiasma (pg. 79)

Question 18

What is the sensory synaptic station that is part of the limbic system?

Answer 18

Mammillary bodies (pg. 79)

Question 19

What projects inferior to the hypothalamus and secretes many horomones?

Answer 19

Pituitary gland (pg. 79)

Question 20

What are the functions of the Hypothalamus in the regulation of visceral activity?

Answer 20

1. Body Temp
2. Carbohydrate and lipid metabolism
3. Sleep, sexual activity, and emotion (pg. 79)

Question 21

What makes up the brain stem from superior to inferior?

Answer 21

Midbrain
pons
medulla oblongata (pg. 79)

Question 22

What are the four elevations that are arranged as two pairs located at the roof (dorsal surface) of the midbrain called?

Answer 22

The corpora quadrigemina (pg. 80)

Question 23

What is the pair of elevations of the corpora quadrigemina that are involved in the pathway of vision?

Answer 23

Superior colliculi (pg. 80)

Question 24

What is the pair of elevations of the corpora quadrigemina that are involved in the pathway of hearing?

Answer 24

Inferior colliculi (pg. 80)

Question 25

What acts as a bridge connecting the right and left cerebellar hemispheres and relays impulses from the cerebral cortex to the cerebellum?

Answer 25

The pons (pg. 80)

Question 26

What is the part of the brain that is directly continuous with the spinal cord and contains most of the ascending and descending tracts of the spinal cord?

Answer 26

The medulla oblongata (pg. 80)

Question 27

The medulla oblongata represents an area in which tract fibers lie called what?

Answer 27

Pyramids (pg. 81)

Question 28

An area inferior to to the pyramids is where the pyramidal tracts cross over to the contralateral side called what?

Answer 28

Pyramidal decussation (pg. 81)

Question 29

Other tract fibers can cross where?

Answer 29

in the spinal cord or in the brain itself (pg. 81)

Question 30

The medulla oblongata contains several nuclei involved in the regulation of vital body activities such as?

Answer 30

Respiratory Cardiac (heart rate) Vasomotor (blood pressure) (pg. 81)

Question 31

This structure connects with the midbrain, pons, and medulla oblongata via the superior, middle, and inferior cerebellar peduncles? 2 names?

Answer 31

Cerebellum (little brain) (pg. 81)

Question 32

The cerebellum consists of 2 hemispheres separated by what?

Answer 32

a median vermis (pg. 81)

Question 33

The outer layers of the cerebellum contain what?

Answer 33

Folia (seperated by fissures) | (folia= leaves) pg. 81

Question 34

Internally the cerebellum has white matter branching in the form of a tree called what?

Answer 34

The arbor vitae (pg. 81)

Question 35

What are the functions of the cerebellum?

Answer 35

1. coordination of muscular activity 2. regulation of muscle tone 3. maintenance of equilibrium (pg. 81)