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Anat Block 2 > lec 1 > Flashcards

lec 1 Flashcards

1
Q

CN I name, type, exit

A

Olfactory, sensory, cribiform plat of ethmoid bone

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2
Q

CN II name, type, exit

A

Optic, sensory, optic canal

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3
Q

CN III name, type, exit

A

Oculomotor, motor, efferent + PSNS, sup orbital fissue

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4
Q

CN IV name, type, exit

A

Trochlear, motor efferent, Sup orbital fissure

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5
Q

CN Va name, type, exit

A

Trigeminal Opthalamic, afferent sensory, Sup orbital fissure

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6
Q

CN Vb name, type, exit

A

Trigeminal Maxillary, afferent sensory, foramen rotundum

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7
Q

CN Vc name, type, exit

A

Trigeminal Mandibular, afferent sensory and efferent motor, foramen ovale

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8
Q

CN VI name, type, exit

A

Abducens, motor efferent, Sup orbital fissure

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9
Q

CN VII name, type, exit

A

Facial, motor efferent sensory afferent taste, Internal auditory meatus

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10
Q

CN VIII name, type, exit

A

Vestibular Cochlear, sensory afferent, Internal auditory meatus

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11
Q

CN IX name, type, exit

A

Glossopharyngeal, efferent motor afferent sensory taste, jugular foramen

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12
Q

CN X name, type, exit

A

Vagus, afferent sensory efferent motor taste, Jugular foramen

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13
Q

CN XI name, type, exit

A

Spinal Accessory, efferent motor, jugular foramen

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14
Q

CN XII name, type, exit

A

Hypoglossal, motor efferent, hypoglossal canal

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15
Q

Efferent action of body

A

Axons of UMNs in motor homunculus - internal capsule - decussate - corticospinal tract - LMNs in lamina 9 - ventral root - dorsal or ventral primary rami - target

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16
Q

Efferent action of Orofacial

A

UMNs in motor homunculus - internal capusle - decussate - corticobulbar tract - LMNs in motor nucleus brainstem - go along cranial nerves to target

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17
Q

Loc of Cranial Motor Nuclei and order

A

Brainstem and rostral-caudel order

18
Q

Motor Nuclei Names

A

All named after nerve except nucleus ambiguous (LMNs for 9 and 10)

19
Q

Cortico bulbar tract synapse info and CN innervation of exceptions

A

All except 3, 4(Sup oblique), 6(lateral rectus). Exceptions dont receive commands from motor homunculus

20
Q

Motor Nuclei info for CN XI

A

Innervates only trap and sternocleidomastoid muscles. LMNs in lam 9 in upper cervical region activated by corticospinal pathway. Axons to foramen magnum w/ CN 9 and 10

21
Q

Lesion in UMN

A

paralysis of assoc muscle on contralateral side, spasticity, and no regen

22
Q

Lesion in LMN

A

Ipsilateral flaccidity, weakness, regen possible

23
Q

Organization of Brain Stem

A

midbrain (CN 3) pons (CN 5 6) medulla oblongata (CN 7 9 10 12 *11 special), Nerves leave brainstem in order

24
Q

Sensory nerve info for orofacial

A

trigeminal

25
Q

Gen info for pain and touch somatic

A

3 sets of neurons, loc of 1st order cell bodies in afferent gang outside CNS - no synapse, modality specific, cell bodies in DRG

26
Q

Pain Path Somatic

A

syn on 2nd in lam 1/2 level of entry - decussates - lat spino thalamic tract - syn 3rd at VPL - sense hom

27
Q

Touch path Somatic

A

ascend dorsal column - syn 2nd in nuc gracilis or cuneatus in brainstem - decussate - syn in VPL - 3rd to sense hom

28
Q

Gen info sense orofacial

A

3 sets of neurons, modality specific, By trigeminal nerve territory specific. 1st order bodies in trigeminal ganglion. central branch synapses in a nuc in brainstem having cell bodies of 2nd. 2nd decussates ascends to 3rd in VPM to sense hom

29
Q

Orofacial Pain Path

A

1st cell bodies = trigeminal gang, central axons for all V enter brainstem and descend together as spinal tract - along the way axons leave to syn on 2nd along spinal nucleus, 2nd decussate ascend to 3rd in VPM (spinal tract sim to lam 1/2)

30
Q

Orofacial touch path

A

1 cb = trigeminal gang, syn 2 in pantine nuc, dec, VPM (pantine sim to gracilis/ cuneatus)

31
Q

Autonomic Pathways gen

A

PSNS and SNS = motor only, preg cb in CNS, postg neuron in periph. Input driven by hypothalamus, PSNS (cranial sacral) SNS (thoracic lumbar)

32
Q

Targets of SNS and PSNS

A

Salivary Glands (parotid, submandibular, sublingual).
Mucous glands of nose + pharynx
Orbital structures: lacrimal gland, spincter and ciliary muscles of iris P, Dilator muscle of iris S, sp tarsal muscle S
blood vessels S
sweat glands

33
Q

SNS path to head and orofacial

A

Preg neurons in lam 7 (intermediolateral horn at T1,2) exit via ventral root and enter sym chain via wrc course up sym chain to sup cervical gang syn to post g follow blood vessels to target

34
Q

Horners Syn Causes

A

Disruption of Sym (compression of cervical or thoracic sym chains on affected side, Pancoast tumor on apex on lung)

35
Q

Horners Syn symptoms

A

Pseudoptosis (drop eye - para of sup tarsal musc)
Miosis (cons of pupil - inact of dilator musc)
Enophthalmos (sunken eye - inact of muellers musc)
reduced sweat (anhidrosis)
Flush face - blood v dilation

36
Q

CNs w/ PSNS fx gen

A

3, 7, 9, 10. Each has a nuc w/ preg loc in brainstem act by hypothalamus. at least one gang outside CNS w/ postg neurons. Set of targets

37
Q

CNs w/ PSNS CN III

A

Regs sphincter muscles of eye. Preg in Nuc of Edinger-Westphal exit in CN3 and syn on postg neurons in ciliary ganglion

38
Q

CNs w/ PSNS CN VII

A

Regs lacrimal, submandibular, and sublingual glands. Superior salivatory nuc exit CN7 to syn postg in 2 diff ganglia (pterygopalatine and submandibular)

39
Q

CNs w/ PSNS CN IX

A

Regs parotid gland. inf salivatory nuc exit in CN 9 and syn postg in otic ganglion

40
Q

CNs w/ PSNS CN X

A

Regs viscera of thorax and abd. preg from dorsal motor nuc.

Anat Block 2 (11 decks)

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