Chapter 14 objectives Flashcards

(42 cards)

1
Q

Olfactory ( I )

A
  • Sensory

- Smell

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2
Q

Optic ( II )

A
  • Sensory

- Vision

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3
Q

Oculomotor ( III )

A
  • Motor ( Somatic & Autonomic )

- Movement of eyeball & upper lid

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4
Q

Trochlear ( IV )

A
  • Motor ( Somatic )

- movement of eye balls

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5
Q

Trigeminal ( V )

A
  • Mixed ( sensory & motor * Somatic * )
  • Touch , pain, thermal sensations from scalp , face and oral cavity
  • Chewing
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6
Q

Abducens ( VI )

A

-motor ( Somatic )

Movement of eyeballs

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7
Q

Facial ( VII )

A
  • Mixed
  • Sensory
  • Motor ( Autonomic & Somatic )
  • Taste from anterior 2/3 of tongue
  • Touch , pain, temperature sensations from skin in ear canal
  • Secreation of tears & saliva
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8
Q

Vestibulocochlear ( VIII )

A
  • Sensory

- Hearing and equilibrium

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9
Q

Glossopharyngeal ( IX )

A
Mixed 
-Sensory 
Motor ( Somatic )
Motor ( Autonomic ) 
- Taste from anterior 1/3 of tongue 
- assists in swallowing
-Monitors blood pressure and oxygen and carbon dioxide levels in blood
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10
Q

Vagus ( X )

A
  • Mixed
  • Sensory
  • Motor ( somatic )
  • Motor ( autonomic )
  • Taste from epiglottis
  • proprioception from throat and neck muscles
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11
Q

Hypoglossal ( XII )

A
  • Motor
  • Somatic
  • Movement of tongue during speech & Swallowing
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12
Q

Accessory Nerve ( XI)

A
  • Motor

- supply movement of skeletal muscles of neck

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13
Q

• Prosencephalon

A

Forebrain

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14
Q

• Mesencephalon

A

Mid-brain

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15
Q

• Rhombencephalon

A

Hind-brain

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16
Q

Cranial Meninges

A
  1. Dura Mater
  2. Arachnoid
  3. Pia mater
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17
Q

Dura special features

A
  1. forms venous sinus ( blood filled endothemim - lined vessel )
  2. no epidural space
18
Q

What are the dural extentions

A
  1. falx cerebri ( separates 2 cerebral hemispheres
  2. flax cerebelli ( separates two cerebellar hemispheres
  3. Tentorium cerebelli
    ( separsted the cerebrum from cerebellum
19
Q

Blood brain barrier ?

A

protects brain from harmful substances and pathogens by restricting passage into brain

20
Q

does the BBB Consist of tight junctions & thick basement membrane of the capillaries

21
Q

What do astrocytes do in BBB

A

regulate peremablity of the BBB by secreting chemicals

22
Q

Internal carotid & vertebral arteries

A

Carry blood to brain

23
Q

Internal Jugular veins

A

Return blood from brain

24
Q

Metabolism and source of ATP

A
  • 20% of oxygen & glucose is consumed ( weighs on 2% of body weight )
25
What passes through BBB
Oxygen, co2, Alcohol, Anesthetics,urea, Ions, creatine
26
Cerebrospinal Fluid
Helps exchange of nutrients and wastes between blood and nervous tissue & provides good environment for neuronal signaling
27
What are ventricles
cavities in brain filled with CSF & lined by ependymal cells
28
Lateral ventricle
- separated ANTERIORLY by septum - start of anterior cerebellum - 2
29
Third ventricle
- located in the diencephalon
30
Cerebral aqueduct
- located in mid brain
31
Forth ventricle
- end @ the medulla oboganta | - Located at the brain stem & cerebellum
32
Choroid plexus
Network of capillaries in wall of ventricles
33
Plasma drwan from Chorid plexus
- ependymal cells | - produces csf into ventricles via filtration
34
Arachnoid Villi
Collects CSF from superior sagittal sinus
35
Circulation of CSF
later ventricle > interventricular foramen > third ventricle> cerebral aqueduct > fourth ventricle> Subarachnoid Space
36
Medulla Oboganta
-most inferior
37
Pyramids
bulges on the anterior aspect of the medulla - formed by corticospinal tract that passes from cerebrum to spinal cord - site of ascending & descending tracts
38
Centers of Medulla
1. Cardiovascular center | 2. Respiratory center
39
Cranial nerves found in medulla
VII - XII ( 7-12)
40
Pons
- Contains both nuclei & tracts | - has gray & white matter
41
Nuclei in pons
pontine nuclei | - relays signals for voluntary movements that occur in cerebal cortex
42
Penumotaxia area & apneustic area
helps control breathing with medulla