Lecture 7 Flashcards

1
Q

What are the three branches of the cranial nerves

A

ophthalmic
maxillary
mandibular

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2
Q

__________________ is a terminal branch of the trigeminal nerve (along with the maxillary and mandibular nerves). It provides sensory innervation to the skin, mucous membranes and sinuses of the upper face and scalp.

A

The ophthalmic nerve (CNV1)

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3
Q

________________ carries sensory information from the lower eyelid and cheek, the nares and upper lip, the upper teeth and gums, the nasal mucosa, the palate and roof of the pharynx, the maxillary, ethmoid and sphenoid sinuses, and parts of the meninges

A

The maxillary nerve

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4
Q

_______________ is a terminal branch of the trigeminal nerve (along with the maxillary and ophthalmic nerves). It has a sensory role in the head, and is associated with parasympathetic fibres of other cranial nerves.

A

mandibular nerve

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5
Q

__________ supply sensory innervation of the face and tongu. Cell bodies found in trigeminal ganglion

A

somatic sensory neurons

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6
Q

What is the function of somatic motor neurons in the trinomial nerve

A

chew/ move mouth

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7
Q

What are the 3 functions of the trigeminal nerve

A
  • facial expression
  • visceral motor
  • Innervates taste buds
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8
Q

What is the function of the somatic motor neurons in the facial nerve 7

A

innervate muscles and fascial expression

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9
Q

In facial nerve 7, ________________ is made of 2 parasympathetic ganglia related to CN 7 and is marked by asterisks. Postgaglionic neurons innervate salivary glands, lacrimal glands, and glands on the nose

A

visceral motor neurons

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10
Q

______________________ sensory information from the taste buds on anterior surfaces of the tongue. CN7

A

special sensory neurons

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11
Q

_____________ in CN 9 this nerve innervates 1 muscle of the pharynx

A

somatic motor neurons

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12
Q

Where is the pharynx

A

posterior to the nasal and oral cavity

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13
Q

____________ in CN9 there is 1 parasympathetic ganglion, the otic ganglion, related to CN 9, post ganglionic neurons innervated salivary glands

A

visceral motor neurons

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14
Q

________________ conduct taste and general sensation from posterior tongue and oral cavity

A

special and general sensory neurons

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15
Q

what are the 3 special functions of the glossopharngia, nerve

A
  • initiates swallowing
  • Initiates salva production
  • supples taste buds
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16
Q

_________________________ CN 10 innervate muscles of larynx and pharynx and are involved in swallowing

A

somatic motor neurons

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17
Q

___________________- CN 10 preganglionic parasympathetic neurons in dorsal nucleus of the vagus, provide parasympathetic innervation of body. Post ganglionic neurons in or near targets

A

visceral motor neurons

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18
Q

_____________________ CN10 sensory afferents form thoracic and abdominal viscera, including carotid body also component of CN 9

A

visceral sensory neurons

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19
Q

What are the 3 special functions of the vagus nerve

A
  • the wander: it integrates the heart, lungs, and other viscera
  • sensory afferent of other organs
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20
Q

What in olfactory receptor cells in the olfactory epithelium detect odors

A

cilia detect odors

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21
Q

_________________ unusual neurons that die throughout life and are continually generated from stem cells in the olfactory epithelium

A

olfactory receptor cells

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22
Q

olfactory receptor cells project axons through the skull into olfactory bulb where they synapse with _________________ Axons of ____________________________ project in olfactory tract to olfactory cortex

A

mitral cells.

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23
Q

What is the optical nerve #

A

CN 2

24
Q

_________________ is continuous with the dura mater

A

outer external fibrous layer

25
Q

_____________ is the tough, thickest layer of connective tissue

A

sclera

26
Q

____________________ this, avascular tissue that lets light in

A

cornea

27
Q

__________________ coresponds with arachnoid and Pia mater. The vascular layer is composed of thee choroid cilliary body and the iris.

A

middle vascular layer

28
Q

__________ covers the smooth muscle

A

iris

29
Q

the size of the pupil is controlled by the __________________

A

autonomic nervous system

30
Q

______________________ is innervated by parasympathetic nerve

A

circular smooth muscle constricts the pupil

31
Q

_______________ innervated by sympathetic nerve

A

radial smooth muscle

32
Q

________________ photoreceptors along the inner layer of the retina

A

inner sensory layer

33
Q

light absorbing pigment ________________ is contained in the ___________________

A

rhodopsin

rod photorecepters

34
Q

A change in membrane potential of the photoreceptors is the signal transmitted to retinal ganglion cells

A

retinal ganglion cells

35
Q

axons of retinal ganglion cells project out of the eye forming the _____________

A

optic nerve

36
Q

axons of retinal ganglion cells synapse in the ________________________

A

lateral vehicular nucleus

37
Q

________________ is the thalamic sensory relay for the visual system

A

lateral geniculate nucleus

38
Q

lateral geniculate neurons project axons to

A

the primary visual system

39
Q

nasal and temporal halves of retina project to form the ________________

A

visual cortex

40
Q

axons form nasal retinal ganglion cells cross in the ______________

A

optic chasm

41
Q

axons from the temporal retinal ganglion cells project

A

ipsilaterally

42
Q

______________ located in the back off the eye. It is the second cranial nerve

A

optic nerve

43
Q

________________ the area that cross the information crosses on the backside of the brain

A

pituitary tumor near the optic chasm

44
Q

outer and middle ear divide into

A

tympanic membrane

45
Q

middle ear its an air filled space contained 3 small bones

A

incus, malleus, stapes

46
Q

________________ links middle ear with pharynx- site of ear infections (Otis media)

A

auditory tube

47
Q

middle and inner ears separated by

A

oval window

48
Q

semicircular ducts in the _________________

A

semicircular canals

49
Q

cochlear ducts in

A

cochlea

50
Q

primary sensory neurons conveys signals from _______________ via __________________

A

receptors in the brainstem

via cholera division

51
Q

most axons of _________________ neurons cross at this level of the medulla dn project rostrally to the ________________ wire they synapse

A

cochlear nuclei

inferior colliculi

52
Q

Neurons in both inferior colliculi project axons to the _____________________ medial geenicular nucleus contralateral to where the original signal was received

A

medical vehicular nucleus

53
Q

neurons in the medial geniculate project axons to the _____________________

A

primary auditory cortex

54
Q

________________________ in the brainstem are important to the ability of the auditory system to localize sound

A

Bilateral projection

55
Q

_________________ anterograde, will transport to the primary auditory cortex

A

biotinlated dextran

56
Q

______________________ retrograde transport, moves toward the location at which the sound was detected.

A

horse radish peroxidase