Organization of Brainstem Flashcards Preview

Undeleted > Organization of Brainstem > Flashcards

Flashcards in Organization of Brainstem Deck (22):
1

Rhombencephalon forms the ____ and ____

Medulla and pons

2

Mesencephalon forms the ___

Midbrain

3

Pontine tegmentum
Location:
Contains:

Dorsally in pons
Cranial nerve nuclei associated w/ pons and major ascending and descending tracts

4

Basis pontis
Location:
Contains:

Ventrally in pons
Deep pontine nuclei, pontocerebellar fibers, corticofugal tracts

5

Ependymal layer of developing neural tube =

lining of ventricles

6

Mantle layer of developing neural tube =

gray matter

7

Marginal layer of developing neural tube =

white matter

8

General somatic afferent =
CN:

pain, temp, touch, proprioception from skin and deep tissues, muscles, joints
CN 5, a little 7, 9, 10

9

General visceral afferent =
CN:

Sensory information from organs including visceral nociceptors, mechanoreceptors, specialized receptor structures (carotid body)
CN 9, 10

10

General somatic efferent =
CN:

Innervation of most skeletal muscles
CN 3, 4, 5 (ocular motility), 12 (tongue motility)

11

General visceral efferent =
CN:

Parasympathetic/sympathetic pre- and postganglionic neurons
Secretomotor, vasomotor, cardiomotor, smooth muscle, glands, adrenal medulla
CN 3, 7, 9, 10

12

The only head muscles that are innervated by CNs but NOT derived from brachial arch mesenchyme are ____ and ___

Tongue and eye muscles

13

Branchial arch 1 gives rise to ____ nerve that innervate ____

CN V3
mm. of mastication

14

Branchial arch 2 gives rise to ____ nerve that innervate ____

CN 7
mm. of facial expression

15

Branchial arch 3 gives rise to ____ nerve that innervate ____

CN 9
stylopharyngeus m.

16

Branchial arch 4 gives rise to ____ nerve that innervate ___

CN 10
cricothyroid m.

17

Branchial arch 6 gives rise to ____ nerve that innervate ____

CN 10
Intrinsic mm of laryngeal

18

Occipital somites give rise to ___ nerve that innervate ___

CN 12
Tongue mm.

19

Pro-otic somites give rise to ___ nerves that innervate ___

CN 3, 4, 6
Extraocular mm.

20

Special visceral efferent (SVE) =
CN:

Innervation of head and neck muscles derived from branchial arches
CN V3: mm. of mastication
CN 7: mm. of facial expression
CN V3, 7: middle ear
CN V3, 10: palatal
CN 10, 11: pharyngeal
CN 10: laryngeal mm.

21

Special visceral afferent (SVA) =
CN:

restricted to taste
CN 7, 9, 10
NOT V3 b/c it goes through GSA

22

Special somatic afferent (SSA) =
CN:

Detection of vestibular and auditory stimuli by specialized hair cell receptors in the inner ear.
CN 8