(03-Lab) Myelencephalon

Question 1

(Ventral View of a Sheep Brain)

(Name A - G)

(tr)

(p)

Answer 1

(A) XII

(B) VIII

(C) VII

(D) VI

(E) XI

(F) X

(G) IX

(tr) trapezoid body
(p) pyramids

Question 2

(ventrolateral view of dog brain)

(pyr)

(yellow)

(pink)

(blue)

(green)

(white)

(orange)

Answer 2

(pyr) pyramid
(yellow) trapezoid body
(pink) abducent
(blue) facial
(green) vestibulocochlear
(white) glossopharyngeal, vagus, and accessory
(orange) hypoglossal

Question 3

(Ventrolateral View of Sheep Brainstem)

(orange)

(white)

(green)

Answer 3

(orange) pyramids
(white) pons
(green) trapezoid body

Question 4

Ventral view of a sheep brainstem

(V)

(VIII)

(F)

Answer 4

(V) trigeminal nerve

(VIII) vestibulocochlear nerve (VII)?

(F) motor nucleus of facial nerve

Question 5

(Ventrolateral view of an equine hindbrain)

(Name A-E)

(red pic)

(*)

Answer 5

(A) 12

(B) 8

(C) 7

(D) 5

(E) choroid plexus

(red pic) trapezoid body

(*) spinal cord/pyramid junction

Question 6

Dorsal view of a sheep brainstem

(B)

(D)

(white and pink)

PART OF METENCEPHALON

(Blue, Red, Yellow)

Answer 6

(B) medial cuneate nucleus

(D) nucleus gracilis

(white and pink) floor of fourth ventricle

(blue) rostral cerebellar peduncle
(red) middle cerebellar peduncle
(yellow) caudal cerebellar peducle

Question 7

(Transection through the caudal half of the myelencephalon)

(p)

(o)

(IV)

Answer 7

(p) pyramids
(o) olivary nucleus

(IV) fourth ventricle

Question 8

(cp)

Answer 8

choroid plexus

Question 9

(p)

(tr)

(d)

Answer 9

(pyramids)

(trapezoid body)

(dorsal nucleus of the trapezoid body)

Question 10

(a-B)

Answer 10

(A) medial cuneate nucleus

(B) nucleus gracilis