MRCS Flashcards
Optic canal
II - optic nerve
Opthalmic artery
Superior orbital fissure
III - oculomotor IV - trochlear VI - abducens V1 Opthalmic veins
Live Frankly To See Absolubtley No Insult Lacrimal Frontal Trochlear Superior oculomotor Abducens Nasocillary Inferior oculomotor
Foramen rotundum
V2
Foramen spinosum
Middle meningeal artery
Meningeal branch of Mandibular nerve (V3)
Foramen lacerum
Greater petrosal nerve
A branch of the facial nerve (7) which supplies the lacrimal ducts
Foramen cecum
Emissary veins
Jugular foramen
IX + X + XI
Internal jugular vein
Foramen magnum
Ascenting 11
Vertebral arteries
Brainstem
Foramen ovale
Otic ganglion V3 Accessory meningeal artery Lesser petrosal nerve (branch of IX innervates parotid) Emissary veins
IV eye movements
Superior oblique
Palsy - up and out
VI eye movements
Lateral rectus
Palsy - medial
CN III palsy
Down and out
Gastrin
acts on parietal cells, increases stomach acid
Pepsin
Secreted with gastrin
Breaks down protein
Secretin
Inhibits acid
Secretes bile and pancreas
GIP
Inhibits parietal cells
Histamine
Acts on parietal cells to increase acid
Cholecystekinin
Inhibits parietal cells
Gallbladder contraction
VIP
Stimulates pancreas and intestines
Inhibits acid and pepsin
Somatostatin
Inhibits everything, makes gastric mucous
Functions of the facial nerve
Muscles of facial expression
Stapedius muscle
Anterior 2/3 taste
Parasympathetic fibres - lacrimal and salivary glands
Drainage of testicular veins
R vein goes RIGHT into the IVC
Left vein LIKES the kidneys
Cerebral perfusion pressure
Cerebral perfusion pressure= Mean arterial pressure - intra cranial pressure
Mean arterial pressure
Diastolic pressure+ 0.333(Systolic pressure- Diastolic pressure)
Cerebral aqueduct/ aqueduct of Sylvio
Connents 3rd-4th ventricles
4th ventricle to subarachnoid space
Foramen of Luschka + Magendie
Lateral ventricles to 3rd ventricle
Foramen of Munro
Brown tumour
Hyperparathyroidism
Calcium oxalate stones
Most common, radiopaque
Hyper calsuria
Uric acid stones
Low urinary pH
Metabolic disorders
Radiolucent
Cysteine stones
Inherited metabolic
Radiodense
Calcium phosphate stones
Renal tubular acidosis type 1+3 - hurts to pee
Radiodense
Struvite stones
Mg + ammonium + phosphate
Urease producing bacteria
Slightly radio-opaque
colorectal, endometrial, renal, CNS cancers
HNPCC/ Lynch syndrome
Lynch syndrome genetics
Mismatch repair
Also called HNPCC
Colon, rectum, gastric, duodenum
FAP
FAP genetics
APC
100% cancer risk
Gardener syndrome
Desmoid tumours, mandibular osteomas
Harmatomatous polyps
Peutz-Jeghers
Breast + thyroid + harmatomas
Cowden syndrome
PTEN gene
Cowden syndrome
Polyposis, colonic and CNS tumours
Turcot’s syndrome
Muscles - musculocutaneous
BBC
Brachialis
Biceps brachi
Coracobrachialis
Function musculocutaneous nerve
Flex and supinate arm
Sensation to anterolateral forearm
Axillary nerve muscles
DT
Deltiod
Teres minor
Upper lateral cutaneous nerve - origin and function
Axillary nerve
Regimental patch
Radial nerve function
Sensation to lateral lower upper arm, posterior arm and forearm, dorsal lateral 3.5 digits
Motor - posterior arm and forearm
Radial nerve muscles
Triceps
Brachioradialis
Extensor carpi radialis longus
Supinates forearm
Extends wrist and fingers
Median nerve sesation
Palmar lateral 3.5 digits
Median nerve motor function
Pronate and flex
Most anterior forearm structures
Median hand muscles
Bread loaf Lateral lumbircals Opponens pollucis brevis Abductor pollucis brevis Flexor pollucis brevis
Median nerve palsy
Pope’s blessing
Radial nerve palsy
Claw hand
Ulnar nerve muscle function
Flexes
Ulnar nerve muscles
All muscles of the hand apart from loaf
Flexor carpi ulnaris
Flexor digitorum profundus
Froment’s sign
Ulnar nerve palsy
Can’t stop paper being pulled out of pincer grip
Sarcomas, leukaemias, breast, brain, adrenal, colon
Li-Fraumeni
Association with PSC
UC
Association with PBC
Rheumatoid, scleroderma, thyroid
Hyatid cyst
Sheep farmer, dog breed
Echinococcus
Bone for skull foramen
Sphenoid bone
Temporal then occipital
Drainage prostate
internal iliac
Exopthalmos, diaphragm hernia + bilious vomiting
Intestinal malrotation
Posterior shoulder dislocation
Seizure, electrocution
Mid-inguinal point
Artery
Mid-point of inguinal ligament
Deep inguinal ring
Posterior belly digastric
Facial nerve
Anterior belly digastric
Mylohyoid nerve
Otalgia
Glossopharyngeal nerve
Galaezzi fracture
Radial #
Dislocation radio-ulna joint distally
Smith’s #
Backwards FOOSH
Bennett’s #
Intracapsular # of 1st carpometacarpal joint
Monteggia’s #
Ulna #
Dislocation of distal radio-ulna joint
Pott’s #
Bimalleolar ankle # with eversion
Barton’s #
Radial # WITH radiocarpal dislocation
Holstein Lewis #
Humeral # affecting radial nerve
Ivor Lewis Oesophagectomy
Middle and distal 1/3 oesophagous tumours
Bile salt reabsorption
Ileum
External laryngeal
Cricothyroid
Leriche syndrome - cause and association
Impotence, glute muscle loss and claudication
Atherosclerosis of aorta + iliac vessels
Right shift O2 curve (pneumonic)
CADET CO2 Acidosis DPG Exercise Tempearture Increased O2 requirement by tissues
Intracellular fluid
60-65%
Extracellular fluid
35-40%
Plasma
5%
Interstitial fluid
24%