2019 MCQ

Bioscience Q’s

Which is a ligand only neurotransmitter? Glycine, ACh

Which causes vasodilation by nitric oxide? Oestrogen

What transports cholesterol from peripheral tissues to liver? HDL

What transports cholesterol to intestines? Chylomicrons

Most abundant leucocyte? – neutrophils

 Pt has HIV antibodies and shortness of breath for 5 weeks? - Pneumocystis Jirovecii

 Macrophages formed from ? - monocytes in blood

 Corpus callosum? – contralateral cerebral hemispheres

What is hypothalamus not involved in? (we don’t know the options so here are things it IS involved with) • Temperature Regulation • Control of Hunger and Satiety • Thirst and Fluid Balance • Sleep and Circadian Rhythms • Control of Hormone Release • Autonomic Nervous System Regulation • Emotional and Behavioral Responses • Sexual Behavior and Reproduction • Stress Responses • Autonomic Responses to Stress

 Where are atheromas most likely to form? High unidirectional flow, at branches etc

Fibrous pericardium? – middle mediastinum

Aortic arch (which vessel wraps around it)? – recurrent laryngeal nerve

Most unlikely factor to cause thrombi? – renal necrosis

Erythropoeisis is inhibited by renal failure? – FALSE

IT IS INHIBITED BY

1. Iron Deficiency
2. Vitamin B12 Deficiency
3. Folate Deficiency
4. Chronic Diseases
5. Bone Marrow Disorders
6. Chronic Infections
7. Medications and Treatments

Oesophagus passes diaphragm through? - T10

 Adaptive immunity? – can respond to inflammation quicker

Patent foramen ovale? - blood can pass through both left and right chambers (atria) of heart, blood can bypass pulmonary circuit and cause clot

 Rate of blood flow is? - proportional to force driving through vessel

Which is a good measure of cardiovascular disease? Sedentary lifestyle

Which of these is elevated in asthma? Eosinophils

 Type 1 hypersensitivity? – IgE

 P-R intervals shows? - interval between onset of atrial depolarisation and onset of ventricular depolarisation

 Pulmonary oedema? - increase in diffusion distance, decrease in lung volume

 Vital capacity? – maximum volume exhaled after maximum inspiration

Which of these causes an increase in affinity of haemoglobin? Low temperature

What is a normal value for PO2? 98 mmHg

 Carbon dioxide is carried as?- bicarbonate ions

 Pulmonary valve? – 2nd left sternal margin

 COPD reduces?- total lung capacity

Dentistry Q’s

 Critical pH of plaque? – 6.5

Random picture of pear shaped diamond bur, which one? 19, tf-13,227

What type of filler particles are in composite? Glass

Pt can’t tolerate intra-oral radiographs and has caries – right and left lateral oblique

What % of Cu is found in high Cu amalgam? 13%

What does NOT affect pocket probing depth? Furcation

Which of these is least likely to give nutritional advice? Classroom assistant

What is found on LA cartridge? None of the above

How long for contamination with saliva? 1 second

8 year old active caries ?- 0.05% daily fluoride rinse

50 year old active caries? – 5,000 ppm toothpaste

 6 year old least likely advice? – rinse after brushing

Which of these is true of composite? Cured with UV light

Which is true for GIC? None of the above

What would you advise for a healthy pt? 1,350 – 1,500 ppm toothpaste

 Cavo surface angle? – angle between cavity wall and external tooth surface

 Matrix band should be? narrower cervically/ at gingival margin

 Alginate space?- 3mm

 what is Hybrid resin? – different particle filler sizes

How many roots and canals found in upper maxillary first molar? 3 roots and 4 canals

How many roots found in upper maxillary second molar? 1 root

How many roots found in mandibular first molar? 2 roots

Where is the LA cartridge placed as you’re giving ID block? Over contralateral mandibular second premolar ### (not sure on this either, swear this is just SAP)

What does AED stand for? Automated External Defibrillator

What are the categories of abrasion? Cervical, habitual, iatrogenic and industrial

What does NCTTL stand for? Non carious tooth tissue loss

 Anti-caries benefit of fluoride? - is topical and risk of fluorosis is systemic

 Class V cavity? – cervical region of tooth

Gracey curette 7 – buccal/lingual surface of posteriors

 Finishing restoration? – smooth, shape and mould to provide correct anatomical form and remove any sharp areas

 Polishing restoration? - to impart shine/lustre

Sealers seal dentinal tubules

Lower left tooth radiograph has broken instrument in it

 BPE probe? – first black band 3.5-5.5mm

 Anterior facial plane parallel to?- pupillary line