slideshow Flashcards

1
Q

Viscerocranium -

A

lower part, bones forming the face (maxillary and zygomatic)

2 nasal bones, 2 lacrimal bones, 2 zygomatic bones, maxilla (with piriform fossa), 2 inferior nasal conchae, unpaired vomer, palatine bone (roof of mouth)

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2
Q

Neurocranium -

A

upper part, bones around brain (cranial vault - cavity and calvaria - skull cap)

Frontal bone, 2 parietal bones, 2 temporal bones, 2 sphenoid bones (apex of orbit), ethmoid bone, occipital bone

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3
Q

Coronal sutures

A

frontal-parietal

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4
Q

Sagittal suture

A

parietal-parietal

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5
Q

Lambdoid suture

A

parietals-occipital looks like the Greek letter Lambda

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6
Q

Squamosal suture

A

temporal-parietal

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7
Q

Wormian bones lie

A

within the sutures (aka Inca bones)

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8
Q

The skull is much shorter in children and elongates in the viscerocranium. This is significant because the Eustacian tube is more ____ in children

A

horizontal

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9
Q

More horizontal Eustachian tube in children results in

A

more common ear infections

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10
Q

describe Neurocranium boney middle layer

A

Intermediate - cancellous bone (diploe)

Houses and protects RBC and red bone marrow

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11
Q

Diploic veins - run through ___ ____ (frontal diploic v., anterior and posterior temporal diploic v., occipital diploic v.) anastamose with each other. Drain the scalp and neurocranium - drains into dural venous sinuses (which is the superior sagittal sinus).

A

diploe bone

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12
Q

explain scalp vein drainage all the way through

A

Scalp v > diploic v > emissary v > superior sagittal sinus

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13
Q

The anterior fontanelle is known as the

A

Bregma (soft spot)

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14
Q

Oribt of skull borders

A
MS. ELFZ Feels A Mean Raw Labia
Floor- Maxilla 
Apex- greater wing of Sphenoid bone
Medial Wall- Ethoid bones (orbital plate) and Lacrimal bones
Roof- Frontal Bone
Lateral Wall- Zygomatic Bone
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15
Q

Lefort Fracture 1

A

Lower maxilla

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16
Q

Lefort Fracture 2

A

upper maxilla, under orbits

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17
Q

Lefort Fracture 3

A

though orbits

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18
Q

Pterion

A

Weak spot due to skull thickness

Meeting place for the frontal, parietal, temporal and sphenoid bones

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19
Q

Pterion Fracture

A

results in damage to the anterior branch of middle meningeal a. > epidural hematoma (fatal 15-20%)

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20
Q

Mandible articulates with skull at

A

TMJ (temporal mandibular joint)

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21
Q

Your mandible forms your lower jaw. What kind of joint does it create?

A

combination hinge and gliding joint (protrusion, retraction, elevation and depression

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22
Q

Inferior alveolar n. enters through

A

mandibular foramen

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23
Q

Inferior alveolar n. enters through mandibular foramen and provides ______. What does it exit out of, and what happens when it exits?

A

sensation to lower teeth and gums then exits mental foramen as the mental n.

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24
Q

What travels with the inferior alveolar n.?

A

The inferior alveolar a

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25
Q

SCALP stands for:

A
S- skin 
C- connective tissue (dense, vascular) 
A- aponeurosis (connects frontalis and occipitalis) 
L- loose connective tissue 
P- pericranium (periosteum) 

Aponeurosis is known as the Galea Aponeurotic

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26
Q

Rostral

A

front of head

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27
Q

Caudal

A

back of head/tail

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28
Q

Cephalic

A

toward head

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29
Q

Ipsilateral

A

same side

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30
Q

Contralateral

A

opposite side

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31
Q

Where is the Corpora quadrigemina located? and what is it?

A

It’s located on the midbrain and it has 2 superior colliculi and 2 inferior colliculi

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32
Q

2 superior colliculi

A

vision reflex

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33
Q

2 inferior colliculi

A

audition reflex

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34
Q

Where is your Olive found

A

its a landmark on your ventral medulla

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35
Q

Your cerebellum has Tonsils on posterior lobe, what happens if the brain swells?

A

they can cause herniation, pressure on the brainstem so the person to not be able to breathe!

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36
Q

Cerebellum Function

A

coordinates muscular activity, mediates posture/equilibrium

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37
Q

Dysenergia

A

Cerebellum lesion-

muscles don’t work together

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38
Q

Ataxia

A

Cerebellum lesion-

unable to coordinate movements, jerky motion of trunk

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39
Q

Dysmetria

A

Cerebellum lesion

past pointing

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40
Q

Dysdiadochokinesia

A

can’t rapidly alternate

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41
Q

Secondary brain vesicles:

A
Telencephalon (cerebrum) 
Diencephalon (thalamus and hypothalamus) 
Mesencephalon (midbrain) 
Metencephalon (pons and cerebellum) 
Mylencephalon (medulla)
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42
Q

What are the tiers of the thalamus separated by? and

Explain the “Tiers” of the thalamus

A

Tiers are separated by internal medullary lamina:
Anterior tier - one nuclei
Medial tier - two nuclei
Lateral tier - lots of nuclei

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43
Q

Relay nuclei

A

take in sensation from incoming systems and relay to the cortex
These are specific to the sense. For example the lateral geniculate body relays vision and the ventral-posterior nucleus relays pain/temp.

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44
Q

Diffuse nuclei

A

non-specific, carry information from the ascending reticular formation to the relay nuclei

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45
Q

Association nuclei

A

receive info from other thalamic nuclei and send to association areas in cortex

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46
Q

Hypothalamus (and what does it technically innervate)

A

integrating center for ANS, innervates viscera and controls visceral function

Parasympathetic (rest and digest) vs. sympathetic (fight or flight)

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47
Q

What is the pituitary gland controlled by

A

the hypothalamus

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48
Q

3 parts of pituitary gland

A

Pars anterior -
Pars posterior -
Pars intermedia

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49
Q

What do all 3 parts of the pituitary gland do?

A

secrete hormones!

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50
Q

Pars anterior

A

Anterior - Teachers Are Failures Letting Students Pass

TSH-(Thyroid Stimulating Hormone- metabolism)
ACTH (AdrenoCorticoTropic Hormone- stress)
FSH (Follicle Stimulating Hormone- maturation of ovum + testes)
LH (Lutinizing Hormone- ovulation and testosterone production)
SGH (Growth hormone)
PRL (Prolactin- lactation)

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51
Q

Pars Posterior

A

OV
Octocin- facilitates labor
Vasopressin (ADH)- retain water

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52
Q

Pars Intermediate

A

MSH- melanocyte stimulating horomone- maintains normal skin tone

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53
Q

In your epithalamus you have your ____ which calcifies in adults

A

Pineal gland (secretes melatonin)

54
Q

Subthalamus prevents what? Explain how this is different from other areas

A

Prevents dyskinesias or hemiballismus. This is different than dysenergia because this is movement all the time (even at rest) whereas dysenergia is excessive movement when the person is trying to move.

55
Q

dyskinesias or hemiballismus is injury to

A

subthalamus

56
Q

dyskinesias or hemiballismus=

A

movement all the time (even at rest)

57
Q

dysenergia is

A

injury to cerebellum

excessive movement when the person is trying to move.

58
Q

Parkinson’s disease

A

Caused by injury to Substantia nigra
tremor at rest, pill rolling tremor
Dark pigmented cells that produce dopamine are degenerated

59
Q

Sulci

A

infolding grooves in cerebral cortex

60
Q

gyri

A

elevations in cerebral cortex

61
Q

Precentral gyrus… AKA? What originates here? What does it do?

A

aka primary motor area, most pyramidal tract fibers originate here, fine digital and voluntary movement

62
Q

Premotor cortex

A

control of gross motor and trunk movement

63
Q

Supplementary motor area

A

plans performance of a sequence of movements from memory (ex. Putting on a shirt)

64
Q

Frontal eye fields

A

motor control of extraocular movements (conjugate deviation)

65
Q

Prefrontal cortex

A

CEO of brain, executive control such as personality, emotions, problem-solving, reasoning and decision-making

66
Q

Basal portion of frontal lobe

A

pars orbitalis, pars opercularis, pars triangularis (these two make up the Broca’s area - drive motor speech and dominant on L side)

67
Q

Postcentral gyrus where is it? What is it? How does it get its information

A

In the Parietal lobe

primary somatosensory area, receives projections from thalamic relay nuclei, perceives general sensation such as pain, temp and tactile sense

68
Q

General sensory association area does what?

A

processes sensory info

69
Q

2 parts of Inferior parietal lobule parts

A
  1. Supramarginal gyrus

2. Angular gyrus

70
Q

Supramarginal gyrus- where does it sit? and what is a disorder to this area called?

A

sits on top of Sylvian fissure ending, provides sensory/tactile feedback to guide motor tasks. Disorder = dyspraxia.

71
Q

Dyspraxia

A

injury to supramarginal, impacts an individual’s ability to plan and process motor tasks

72
Q

Angular gyrus

A

reading association area. Disorders include reading delay, agraphia, acalculia, agnosia

73
Q

Occipital Lobe Contains

A

Primary visual area

Visual association area

74
Q

Primary visual area- location? How does it receive it’s information? Lesion =

A
  • just outside the calcarine sulcus
  • Receives relay nuclei association with vision from thalamus
  • Lesions = cortical blindness
75
Q

Visual association area - what’s around it? and what is a lesion to it called?

A

medial occipital cortex located on either side of the primary cortex and lateral occipital cortex
Lesion = visual agnosia

76
Q

Wernicke’s speech association area- and what side is it dominant on?

A

language comprehension, dominant on the left

77
Q

What connects Broca’s and Wernicke’s directly

A

Arcuate fasciculus

78
Q

receptive aphasia is a lesion to

A

Wernicke’s speech association area

79
Q

Incoming olfactory info does not…

A

pass through the thalamus

80
Q

Hippocampus

A
  • part of limbic lobe

- emotional behavior and memory

81
Q

Expressive aphasia

A

damage to Broca’s area so patient can’t form words but knows what they want to say

82
Q

Agraphia

A

difficulty writing/spelling, damage to angular gyrus

83
Q

Acalculia

A

difficulty with basic math

damage to angular gyrus

84
Q

Finger agnosia

A

can’t count fingers

damage to angular gyrus

85
Q

Dyspraxia

A

damage to likely left parietal association area so patient cannot plan and process motor tasks

86
Q

Ideomotor- and what is it an injury to

A

patient knows what to do but can’t seem to do it, damage to supramarginal gyrus

87
Q

Cortical blindness is a lesion to

A

lesion to primary visual area

88
Q

Visual agnosia

A

patient can’t recognize the object in front of them, damage to visual association area

89
Q

Receptive aphasia

A

patient hears speech but can’t understand, damage to Wernicke’s area

90
Q

Global aphasia

A

both Broca’s and Wenicke’s are damaged

91
Q

Alzheimer’s

A

one of the first parts affected is the hippocampus

92
Q

Epidural space

A

viable space in vertebral column (fat and venous plexus) but only a potential space in the cranium

93
Q

Tentorium cerebelli

A

covers posterior cranial fossa and cerebellum

94
Q

Falx cerebri - lies where? attaches to?

And, what lies between the two lobes of the cerebellum?

A

lies within median longitudinal fissure and attaches rostrally to crista galla. Falx cerebelli lies between lobes of cerebellum.

95
Q

Cervical Plexus

A

And Lets Get Together Sometime Please

Ansa Cervicalis (C1-C3)
Lesser occipital n (C2)

Greater auricular n (C2-C3)

Transverse cervical n (C2-C3)

Supraclavicular n (C3-C4)

Phrenic n (C3-C5)

96
Q

2 Motor Branches of Cervical Plexus

A

Ansa Cervicalis: sternohyoid, sternothyroid, omohyoid (both bellies)

Phrenic: diaphragm

97
Q

4 Sensory Branches of Cervical Plexus

A

Lesser occipital n (C2)
Back of the head

Greater auricular n (C2-C3)
Ear, carotid gland

Transverse Cervical n. (C2-C3)
Anterolateral neck

Supraclavicular n (C3-C4)
Area over clavicle
98
Q

Muscles of Mastication- To close the mouth

A

Temporalis
Masseter
Medial pterygoid

99
Q

Muscles of Mastication- to open the mouth

A

Lateral pterygoid

100
Q

Temporalis O/I

A

O: temporal fossa
I: coronoid process

101
Q

Masseter O/I

A

O: zygomatic bone
I: lateral angle of mandible

102
Q

Medial pterygoid O/I

A

O: pterygoid fossa
I: medial angle of mandible

103
Q

Lateral pterygoid

A

O: lat. pterygoid plate
I: mandibular condyle and articular disc

104
Q

Describe the arrangement of the Teeth

A
4 incisors (medial/lateral)
2 canines
4 premolars (1st, 2nd)
6 molars (1st, 2nd, 3rd)
105
Q

How many teeth on top? How many teeth on bottom?

A

16 on top, 16 on bottom

106
Q

Infections of scalp can spread through which layer

A

the loose connective tissue layer

107
Q

Significance of the circle of Willis

A

collateral blood flow

protective against stroke

108
Q

how many teeth do children have?

A

20

109
Q

intrinsics MUSCLES of the tongue

A

Intrinsic:

  • longitudinal (roll tongue up)
  • transverse (make hot dog)
  • vertical (flatten out) - (CN XII)
110
Q

Genioglossus: ?→?, What does it do? CN ?

A

chin → tongue; stick out tongue; CN XI

111
Q

Hyoglossus:? → ?, what does it do? CN?

A

hyoid → tongue; “ahhh @ doctor”; CN XII

112
Q

Styloglossus: ? → ?; what does it do? CN ?

A

styloid process → tongue; bring tongue back in; CN XII

113
Q

Palatoglossus: ? → ?; what does It do?; CN ?

A

soft palate → tongue; lift tongue, oppose soft palate; CN X

114
Q

Sensation to tongue

A

ant ⅔: V3 (lingual br)
Ant ⅔ taste: CN VII (chorda tympani)
Post ⅓ general and taste: CN IX (glossopharyngeal- lingual br)

115
Q

Parotid innervation- parasympathetic = CN?

A

CN IX

116
Q

Submandibular parasympathetic innervation = CN ?

A

CN VII

117
Q

Sublingual parasympathetic innervation CN ?

A

CN VII

118
Q

5 SOFT Muscles of palate

A
Levator Veli Palatini
Tensor Veli Palatini
Palatopharyngeus
Palatoglossus
Musculus Uvuli
119
Q

ALL SOFT MUSCLES OF PALATE INNERVATED BY VAGUS NERVE EXCEPT

A

TENSOR VELI PALATINI (V3)

120
Q

Levator Veli Palatini

A

Helps lift palate and clear way

121
Q

Tensor Veli Palatini

A

Tenses palate for swallowing

122
Q

Palatopharyngeus & Palatoglossus

A

Funnel effect for swallowing

123
Q

Musculus Uvuli

A

Closes off choane to keep food/water going up nose

124
Q

3 parts of pharynx

A

Nasopharynx
Oropharynx
Laryngopharynx

125
Q

Nasopharynx

A

opening of eustachian tubes (connect middle ear to nasopharynx), adenoid (pharyngeal tonsil)

126
Q

Oropharynx

A

begins @ uvula, ends @ epiglottis

127
Q

Laryngopharynx

A

begins @ epiglottis, ends around C6, piriform recess - natural trap for food

128
Q

all muscles of Pharynx are innervated by (note exception..)

A

all CN X EXCEPT stylopharyngeus (IX)

129
Q

Larynx begins at

Larynx ends at

A

C4-C6

130
Q

lateral geniculate body relay nuclei relays

A

vision

131
Q

ventral posterior relay nucleus relays

A

pain/temp.