MCQs

Medical MCQs with Explanations

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2891MedicalMedium

All are true about nitric oxide, EXCEPT________?

AIt is important in penile erection

BRegulates vasomotor tone

CPresent in cigarette smoke

DActs via cAMP

Correct answer

D. Acts via cAMP

Explanation

The correct answer is Acts via cAMP.

2892MedicalMedium

Maxillary first molar has how many roots?

A1 mesial and 1 distal

B1 facial and 2 lingual

C1 mesial and 2 buccal

D1 lingual and 2 facial

Correct answer

D. 1 lingual and 2 facial

Explanation

The correct answer is 1 lingual and 2 facial.

2893MedicalMedium

A relatively component of the electron transporting respiratory chain is________?

ACytochrome A

BFlavoprotein

CUbiquinone

DCytochrome Cl

Correct answer

C. Ubiquinone

Explanation

The correct answer is Ubiquinone.

2894MedicalMedium

Which of the following is not useful for coagulation________?

APlasmin

BFibrin

CCalcium

DThrombin

Correct answer

A. Plasmin

Explanation

The correct answer is Plasmin.

2895MedicalMedium

The best way to remove a hydrocolloid impression from the patient’s mouth is________?

ASlight rocking of the impression to disengage it from the undercut

BWetting the periphery of the impression with moist cotton to break the peripheral seal

CSupporting the impression along with the tray to prevent disengaging of the tray alone

DSudden jerking of the impression to prevent tearing

Correct answer

D. Sudden jerking of the impression to prevent tearing

Explanation

The correct answer is Sudden jerking of the impression to prevent tearing.

2896MedicalMedium

Which of the following is not a branch of the external carotid artery?

APharyngeal artery

BOpthalmic artery

CLingual artery

DMaxillary artery

Correct answer

A. Pharyngeal artery

Explanation

The correct answer is Pharyngeal artery.

2897MedicalMedium

Normally, the rate of the heart beat in a human is determined by ________?

AThe sinoatrial node

BThe cervical ganglion

CThe bundle of His

DAll cardiac muscle

Correct answer

A. The sinoatrial node

Explanation

The correct answer is The sinoatrial node.

2898MedicalMedium

A patient shows inability to close the right corner of the mouth is most probably suffering form________?

ATMJ dysfunction syndrome

BMultiple sclerosis

CBell’s palsy

DMyasthenia gravis

Correct answer

C. Bell’s palsy

Explanation

The correct answer is Bell’s palsy.

2899MedicalMedium

The prbable reasons for a high incidence of dental caries in the teenage population relates most directly to________?

AFrequency of sucrose intake

BNegligence in visiting the dentist

CCarelessness in oral hygiene habits

DRapid growth

Correct answer

A. Frequency of sucrose intake

Explanation

The correct answer is Frequency of sucrose intake.

2900MedicalMedium

A bony hard asymptomatic swelling found on the midline of the hard palate that appears radiopaque on a radiograph is most likely a________?

AMyxoma

BOdontoma

CTorus palatinus

DBoney cyst

Correct answer

C. Torus palatinus

Explanation

The correct answer is Torus palatinus.

The best way to remove a hydrocolloid impression from the patient’s mouth is________?

ASlight rocking of the impression to disengage it from the undercut

BWetting the periphery of the impression with moist cotton to break the peripheral seal

CSupporting the impression along with the tray to prevent disengaging of the tray alone

DSudden jerking of the impression to prevent tearing

Correct answer

D. Sudden jerking of the impression to prevent tearing

Explanation

The correct answer is Sudden jerking of the impression to prevent tearing.