Can anyone please explain why the answer is Ethmoid?

A 48yo man with renal cancer had radiotherapy for metastatic spinal cord compression at the 11th thoracic vertebra 4wks ago. He has retained sensation but is unable to stand. He has pain in a band around his lower trunk controlled by regular oral morphine. He is distressed by increasingly frequent episodes of painful muscle spasms in his right leg. What is the SINGLE most appropriate management of his symptoms?
a. Amitriptyline
b. Baclofen
c. Fentanyl patch
d. Gabapentin
e. Increase morphine dose

Can anyone please explain why the answer is Ethmoid?

A young man was hit in the face during a fight. He then experienced diplopia on upward gaze. Which bone s affected?
A. Frontal bone
B. Ethmoid
C. Maxillary
D. Nasal
E. Sphenoid

A 10 yr old boy has fever and sore throat for 2days and then develops haematuria.
A. IgA GN
B. post streptococcal GN
C. Acute Tubular Necrosis
D. Minimal change GN
E. Membranous GN

A 23yo woman with painless vaginal bleeding at 36wks pregnancy otherwise seems to be
normal. What should be done next step?
a. Vaginal US
b. Abdominal US
c. Vaginal exam
d. Reassurance

A man with outward deviation of right eye and diplopia. Which nerve is affected?
A. Left Trochlea
B. Left oculomotor
C. Right Trochlear
D. Right Abducens
E. Right Oculomotor

A women with mixed submucous and subserosal fibroid , wants contraceptive. Which one to give.
A COCP
B IUS
C Implanon
D Depot

A 3yo child has a high temp for 4 days and he had not seen a doctor. Then mother notices rashes on buccal mucosa and some around the mouth. What is the most appropriate dx?
a. Measles
b. Roseola infectiosum
c. Rubella
d. Chicken pox
e. Impetigo

An 80yo woman fell over at her nursing home. XR shows fx of radius with <10degree of dorsal
angulation. What is the single most appropriate tx?
a. Below elbow full plaster of paris
b. Below elbow split plaster of paris
c. Closed reduction of fx
d. Elasticated support bandage
e. Open reduction and internal fixation

A pt came to the hosp with a complaint of severe chest pain lasting for >1h. Following ECG test, pt revealed to have ST depression. He was already on aspirin. What is the most specific tx for this pt?
a. GTN
b. Simvastatin
c. Clopidogrel
d. BB
e. LMWH

45yo IV drug abuser is brought into the ED with complaint of fever, shivering, malaise, SOB and productive cough. Exam: temp=39C, pulse=110bpm, BP=100/70mmHg. Inv: CXR=bilateral cavitating bronchopneumonia. What is the single most likely causative organism?
a. Mycoplasma
b. Staphylococcus
c. Chlamydia pneumonia
d. Pseudomonas
e. PCP

A 72yo man presents to the ED with chest pain. The following ECG was taken. What is the most likely dx?
a. Anterior MI
b. Inferior MI
c. Lateral MI
d. Posterior MI
e. NSTEMI

A 26 year old man presented with abdominal distension and pain. His stool was mucoid and sometimes blood stained. What is the most appropriate investigation?
A. Stool culture and sensitivity
B. Colonoscopy and Biopsy
C. IgA against tissue transglutaminase
D. Barium meal
E. Jejunal biopsy