lecture 3

Question 1

lateral surface of the midbrain is formed mainly

Answer 1

cerebral peduncles

Question 2

internal structures that made up the cerebral peduncles

Answer 2

corticospinal tract (and corticobulbar tracts)

Question 3

What is interpeduncular fossa

Answer 3

deep depression between these two columns,

Question 4

What is the posterior perforated substance

Answer 4

floor of these fossa

Question 5

What is basilar sulcus

Answer 5

basal part is indented along its ventral surface in the midline by a shallow groove

Question 6

basilar sulcus vascular structure is related to it?

Answer 6

basilar artery

Question 7

What is the pyramid?

Answer 7

consists of corticospinal fibers, pyramidal tract as a synonym for corticospinal tract

Question 8

pyramid internal structure responsible to form this swelling area

Answer 8

corticospinal fibers

Question 9

What is Olive

Answer 9

Lateral to the pyramid,

Question 10

Olive internal structure responsible to form this swelling area

Answer 10

inferior olivary nucleus

Question 11

What is the Pyramidal decussation

Answer 11

crossing of the fibers of the corticospinal tracts

Question 12

What is the corpora quadrigemina

Answer 12

dorsal surface of the midbrain bears four rounded elevations, the paired inferior and superior colliculi

Question 13

Posterior to the olives is the ____, which connect the

Answer 13

inferior cerebellar peduncles, medulla oblongata with the cerebellum.

Question 14

The Superior colliculi are

Answer 14

center for visual reflexes

Question 15

inferiors colliculi are

Answer 15

lower auditory centers.

Question 16

is formed by the posterior surface of the pons and the superior half of the medulla oblongata, diamond shape.

Answer 16

Rhomboid Fossa or Floor of the IV Ventricle

Question 17

divide the rhomboid fossa into two triangles, the superior large one and the inferior smaller one

Answer 17

Stria medullaris

Question 18

in the superior triangle near to the striae medullaris form the slight swelling the Facial Colliculus

Answer 18

medial eminence

Question 19

Rhomboid Fossa, The floor is divided into symmetrical halves by the

Answer 19

Median sulcus

Question 20

Rhomboid Fossa, On each side of the sulcus there is an elevation

Answer 20

the Medial Eminence

Question 21

Medial Eminence which is bounded laterally by the

Answer 21

Sulcus Limitans.

Question 22

Laterally to the sulcus limitans is the

Answer 22

Vestibular area, which contain the vestibular nuclei

Question 23

The medial eminence in the superior triangle near to the striae medullaris form the slight swelling the

Answer 23

Facial Colliculus

Question 24

contains numerous blood vessels and receives information from the cerebrum and cerebellum

Answer 24

Red nucleus

Question 25

that facilitates flexor motor neurons of the contralateral side.

Answer 25

Rubrospinal Tract

Question 26

is the melanin-containing nucleus which secretes dopamine to inhibit the excitatory neurons of the basal nuclei.

Answer 26

Substantia nigra

Question 27

regulation of emotional behavior, including fear, flight, anxiety, rage behavior

Answer 27

Periaqueductal gray matter

Question 28

centers work with the medulla to maintain respiratory rhythm

Answer 28

Apneustic & pneumotaxic

Question 29

centers alter the rate and force of cardiac contractions.

Answer 29

Cardioinhibitory/cardioacceleratory

Question 30

alters the tone of vascular smooth muscle.

Answer 30

Vasomotor center

Question 31

the superior end of the sulcus limitans form the

Answer 31

Substantia Ferruginea

Question 32

inferior triangle forms two smaller trigone. The most medial and superior is the

Answer 32

Hypoglossal Trigone

Question 33

Hypoglossal Trigone Lateral and inferior to this, is the

Answer 33

Vagal trigone

Question 34

central canal of the spinal cord continues upward into the lower half of the medulla oblongata, in the upper half of the medulla it expanding as the

Answer 34

Cavity of the four Ventricle.

Question 35

transverse fiber is going to fill up inferior angle of rhomboid fossa

Answer 35

obex

Question 36

is a thin layer of white substance, prolonged from the white center of the cerebellum, above and on either side of the nodule; it forms the infero-posterior part of the fourth ventricle.

Answer 36

inferior medullary velum

Question 37

Facial Colliculus, it is formed by the fibers from the motor nucleus of the facial nerve looping over the

Answer 37

abducent nucleus

Question 38

the superior end of the sulcus limitans form the

Answer 38

Substantia Ferruginea

Question 39

is a narrow area between the vagal trigone and the lateral margin of the ventricle

Answer 39

area Postrema

Question 40

Facial Colliculus, it is formed by the fibers from the ____ of the facial nerve looping over the _____

Answer 40

motor nucleus, abducent nucleus

Question 41

Nuclei in the medulla are associated with

Answer 41

autonomic control, cranial nerves, and motor and sensory relay.

Question 42

Autonomic nuclei

Answer 42

Cardiovascular centers

Respiratory rhythmicity centers

Question 43

Nucleus gracilis and nucleus cuneatus pass somatic sensory information to the

Answer 43

thalamus