Neuroanatomy

Question 1

What neurones are highlighted in green, black, blue and purple?

Answer 1

Green - general somatic or visceral afferents

Black - Interneurone

Blue - pre ganglionic sympathetic neurone

Purple - general somatic efferent

Question 2

Identify A

Answer 2

Dorsal median groove

Question 3

Identify B

Answer 3

Dorsal horn of grey matter

Question 4

Identify C

Answer 4

Grey commissure

Question 5

Identify D

Answer 5

Ventral Horn of grey matter

Question 6

Identify E

Answer 6

Ventral funiculus

Question 7

Identify F

Answer 7

Dorsal funiculus

Question 8

Identify G

Answer 8

Lateral funiculus

Question 9

Identify H

Answer 9

Central canal

Question 10

Identify I

Answer 10

Ventral median fissure

Question 11

Which spinal segment is lumbar?

Answer 11

B

Question 12

Which spinal segment is lower cervical?

Answer 12

A

Question 13

Which spinal segment is thoracic?

Answer 13

E

Question 14

Which spinal segment is sacral?

Answer 14

D

Question 15

What large sensory division of the trigeminal nerve (cn v) supplies the lower eyelid, nasal mucosa, upper teeth, upper lip and nose?

Answer 15

Maxillary n. (CN V)

Question 16

What is the caudal part of the brain stem lying ventral to the cerebellum. Also called the myelencephalon?

Answer 16

Medulla oblongata

Question 17

What is the middle part of the brain stem. Also called midbrain?

Answer 17

Mesencephalon

Question 18

What is the part of hindbrain which comprises the pond and the roughly spherical cerebellum which lies dorsal to the medulla?

Answer 18

Metencephalon

Question 19

What is the caudal part of the brain stem lying ventral to the cerebellum. Also called medulla?

Answer 19

Myelencephalon

Question 20

What is the outer layer of grey matter on the surface of the cerebral hemispheres of the forebrain? (Telencephalon)

Answer 20

Neocortex

Question 21

What part of the brain is the most ventral and do steal part of the telencephalon and projects through the cribs form plate?

Answer 21

Olfactory bulb

Question 22

What feature is the cross-over point for most of the fibres coming from the eye in the optic nerve (CN II)? Located just to steal to the pituitary gland.

Answer 22

Optic chiasm

Question 23

Small polyp-like endocrine organ lies between the cerebellum causally and the two cerebral hemispheres for sally and laterally?

Answer 23

Pineal gland

Question 24

Where are corticospinal tract fibres located?

Answer 24

Pyramids of the medulla

Question 25

What do fibres of the corricospinal tract do?

Answer 25

Facilitate directed precise movements

Question 26

What system of efferent descending fibres arises from the poorly defined network in central brain stem and has roles in respiration, heart rate and blood pressure and different descending tracts can inhibit or stimulate motor activity?

Answer 26

Reticulospinal system

Question 27

What is the caudal region of the brain comprised of the cerebellum and pons (metencephalon) and the medulla (myelencephalon)? Also called the hindbrain?

Answer 27

Rhombencephalon

Question 28

What muscles does the accessory nerve innervate? (CN XI)

Answer 28

Brachocephalicus
Omotransversarius
Trapezius
Sternomastoideus

Question 29

Lesion occurs at C3 - what happens?

Answer 29

Tetraparesis / plegia
UMN to ALL LIMBS
(Paralysed or major weakness)

Question 30

Lesion at C7 - what happens

Answer 30

Tetraparesis/plegia
- UMN pelvic limbs (because road block on spinal cord at c7 means the UMN can’t read L4)

• LMN thoracic limbs (because spinal nerve for LMN to muscle is damaged)

Question 31

Which nerves are tested by the corneal reflex?

Answer 31

V1 and VII

Question 32

What bony feature projects centrally from the indistinct jugular process of the occipital bone and to which is attached m. Digastricus?

Answer 32

Paracondylar process of occipital bone

Question 33

What opening provides passage for the facial nerve VII to supply muscles of facial expression?

Answer 33

Stylomastoid Foramen