Anatomy Workshops

Question 1

where is the location of the third neurone in the somatosensory pathway for discriminative touch

Answer 1

thalamus

Question 2

where do 85% of upper motor neurone axons decussate

Answer 2

the medulla oblongata

Question 3

testing the actions of the biceps femoris tests what spinal root levels

Answer 3

C5, S1

Question 4

what is saltatory conduction

Answer 4

jumping between the nodes of ranvier

Question 5

what are schwann cells

Answer 5

myelinators of the PNS

Question 6

contraction of what muscle against resistance tests C7 motor function of the radial nerve

Answer 6

triceps

Question 7

weakness of right trapezius indicates a weakness in which nerve

Answer 7

spinal accessory

Question 8

extension of the back tests which muscle aswell as testing posterior rami

Answer 8

erector spinae group

Question 9

where is CSF in the spinal cord

Answer 9

central canal

Question 10

what is the main sensory and motor component of the biceps (jerk) reflex

Answer 10

musculocutanous (C5,6) mainly C6

Question 11

complete transection (LMN) injury of what nerve results in grade 0 power in extension movements of the arm

Answer 11

radial nerve

Question 12

what supplies sensation to the skin of the suprapubic region

Answer 12

T12 spinal nerve

Question 13

what supplies sensation to the skin of the 1st web space

Answer 13

L5 spinal nerve

Question 14

what supplies sensation to the skin of the middle finger

Answer 14

median nerve

Question 15

what supplies sensation to the skin of the heel

Answer 15

S1 spinal nerve

Question 16

what are the output cells of the cerebellum

Answer 16

purkinje cells

Question 17

what part of spinal cord/nerves give antereolateral sensation

Answer 17

anterior rami

Question 18

what part of spinal cord/nerves give visceral sensation

Answer 18

visceral afferent (posterior rami)

Question 19

what part of spinal cord/nerves contains only somatic motor and sympathetic axons

Answer 19

anterior roots and rootlets

Question 20

what part of midbrain has a large anterior bulge

Answer 20

pons

Question 21

which part of midbrain looks like mickey mouse

Answer 21

midbrain- cerebral aqueduct is the mouth

Question 22

what is the worm in the brainstem

Answer 22

olivary nucleus of the medulla oblongata

Question 23

interrupting the direct pathway of the basal ganglia causes what clinical sign

Answer 23

hypokinesia/ bradykinesia

Question 24

what is the clinical symptom of demylination of the posterior column (MS)

Answer 24

loss of fine touch

Question 25

would a lesion in the CST produce contralateral or ipsilateral symptoms

Answer 25

ipsilateral

Question 26

what is the role of latissimus dorsi

Answer 26

upper limb adduction/ internal rotation

Question 27

what contains fibres of fine touch and proprioception from upper AND lower limbs

Answer 27

dorsal column

Question 28

what carries pain, temp and deep pressure fibres

Answer 28

spinothalamic tract

Question 29

fibres within what tract cross at the decussation of the pyramids

Answer 29

lateral corticospinal tract

Question 30

which part of the diencephalon which has an endocrine function

Answer 30

hypothalamus

Question 31

what lies inferior to the part of the cerebral hemisphere concerned with vision

Answer 31

cerbellum

Question 32

what matter contains axons but no cell bodies

Answer 32

white matter

Question 33

occulusion of which artery would cause a CVA the pre central left gyrus

Answer 33

anterior cerebral

Question 34

what specialised structures pierce the dura mater on order to transfer CSF to the venous system

Answer 34

arachnoid granunlations

Question 35

what does the spinothalamic tract convery

Answer 35

pain

Question 36

what does the dorsal column convey

Answer 36

fine touch, conscious proprioception

Question 37

what does bocas | area do

Answer 37

language production

Question 38

what does wernickes area do

Answer 38

language comprehension

Question 39

where does vagus leave the cranium

Answer 39

jugular foramen

Question 40

what is the last point supplied by the vagus nerve

Answer 40

splenic flexure

Question 41

the sympathetic axons that supply the orbit pass through here

Answer 41

carotid canal

Question 42

what type of axons pass through the foramen rotundum

Answer 42

sensory- CN V3

Question 43

what type of axons leave the skull via the hypoglossal canal

Answer 43

motor- hypoglossal nerve

Question 44

what is the path of the sympathetic nerve supply to the eye

Answer 44

``` T1 sympathetic trunk superior cervical sympathetic ganglion internal carotid plexus ciliary ganglion short ciliary nerve ```

Question 45

what only normall exits in relation to the spinal cord (not brain) and can be accessed via the L3/4 interspace

Answer 45

extradual (epidural) space

Question 46

what cranial nerve contains visceral afferents that originate within the carotid sheath

Answer 46

CN IX

Question 47

what CN: crossed motor axons exit via the posterior aspect of the midbrain at its junction with the pons

Answer 47

CN IV