CNS

Question 1

Mid meningeal A rupture

Answer 1

Epidural hematoma
Lemon
Pterion #

Question 2

Layers of scalp

Answer 2

» SCALP «

Skin
dense CT : N + blood vessels
Aponeurosis
Loose CT
Pericranium/ periosteum

Question 3

MC complication of forceps delivery

Answer 3

1. Facial N damage (since underdev mastoid)

2. Skull bleeding

Question 4

Complication of parotid tumor/ surgery

Answer 4

CN VII (Bell) palsy

Question 5

Bells vs Facial N palsy

Answer 5

Bell Palsy: Periph. LMN lesion

• i/l affected + forehead
• # MCC d/t HSV reactivation
• Other: Lyme, Ramsay Hunt, Parotid tumor, sarcoidosis, DM.

Question 6

Blow-out #

Answer 6

Orbital floor #
Blunt trauma

Inf rectus m + infraorbital N + A damage

Question 7

Orbital m

Answer 7

SO4 LR6 R3

Obliques look opposite

Question 8

Down n out gaze w blown pupil seen in?

Answer 8

CN III palsy

Question 9

Diplopia + cannot look down

Answer 9

CN IV injury

Question 10

Internal squint

Answer 10

CN VI, LR

Question 11

Corneal reflex

Answer 11

S: CN V1

M : CN VII

Question 12

Pathway involved in EPS

Answer 12

Niagrostriatal

Question 13

Pathway affected by antipsychotics?

Answer 13

Mesolimbic

Question 14

Which nucleus secretes DA?

Answer 14

Arcuate nucleus in hypothalamus

Question 15

Pupillary light reflex mediated by.

Answer 15

CN II + III

LGN + EWN

Question 16

VFD

1. Pie in the sky/ L homonymous sup quadrantanopia :
2. Pie on the floor / L inf:

Answer 16

1. Pie in the sky/ L homonymous sup quadrantanopia : Meyer’s Loop
2. Pie on the floor / L inf: Dorsal optic radiation » duck down on the floor, there’s radiation «

Question 17

Pain, temp, crude touch mediated by which pathway?

Answer 17

Anterolateral STT

Question 18

Vibration, Proprioception, light touch mediated by which pathway?

Answer 18

DCML

Question 19

Taste from post 1/3 tongue

Answer 19

CN IX

Question 20

Taste from ant 2/3 tongue

Answer 20

VII

Taste: 7, 9, 10

Question 21

MC N injured during appendectomy

Answer 21

Iliohypogastric

Question 22

CN mediating taste of tongue

Answer 22

7, 9, 10

Ant 2/3: CN VII
post 1/3 : CN IX
extreme post: CN X

Question 23

CN mediating pain/ sensation of tongue

Answer 23

5, 9, 10

Ant2/3: CN V3
Post 1/3: CN IX
Extreme post: CN X

Question 24

Motor innervation of tongue

Answer 24

CN X, XII

Question 25

What cells are microglia derived from?

Answer 25

Mesoderm

Question 26

What are the CNS derivatives of neural crest cells?

Answer 26

PNS neurons Schwann cells Glia + melanocytes and adrenal medulla

Question 27

What cells are microglia derived from?

Answer 27

Mesoderm

Question 28

What are the CNS derivatives of neural crest cells?

Answer 28

PNS neurons Schwann cells Glia + melanocytes and adrenal medulla

Question 29

Which nucleus synthesizes DA?

Answer 29

Ventral tegmentum, SNc

Question 30

Location of synthesis of NTs 1. ACh: 2. DA: 3. GABA: 4. NE: 5. 5HT:

Answer 30

1. ACh: Nasal nucleus of Meynert 2. DA: Ventral tegmentum, SNc 3. GABA: Nucleus accumbens 4. NE: Locus ceruleus, Pons 5. 5HT: Raphe nucleus, medulla

Question 31

Which nucleus synthesizes DA?

Answer 31

Ventral tegmentum, SNc

Question 32

Location of synthesis of NTs 1. ACh: 2. DA: 3. GABA: 4. NE: 5. 5HT:

Answer 32

1. ACh: Nasal nucleus of Meynert 2. DA: Ventral tegmentum, SNc 3. GABA: Nucleus accumbens 4. NE: Locus ceruleus, Pons 5. 5HT: Raphe nucleus, medulla

Question 33

Thalamic nuclei and (f) 1. VPL: 2. VPM: 3. LGN: 4. MGN: 5. VLN:

Answer 33

1. VPL: vibration, P, proprioception, pain, light touch and temp 2. VPM: Makeup on Face 3. LGN: Light 4. MGN: Music 5. VLN: motor cortex

Question 34

Thalamic nuclei and (f) 1. VPL: 2. VPM: 3. LGN: 4. MGN: 5. VLN:

Answer 34

1. VPL: vibration, P, proprioception, pain, light touch and temp 2. VPM: Makeup on Face 3. LGN: Light 4. MGN: Music 5. VLN: motor cortex

Question 35

Seizures in first 5 postnatal days w bulging ant fontanelle seen in?

Answer 35

Intraventricular hemorrhage d/t germinal matrix fragility