NEET PG/NEXT (MCQs)

2021-03-25 14:27:33 Explanation

In nervous circulatory mechanism of arterial BP the chemoreceptors reflex operates between 40-100 mmHg

Fallen the arterial BP less than 80 mmHg decreases the blood flow to the tissues, this decreases pO2 to carotid and aortic bodies and causes stimulation of VMC and CVC and respiratory centre Open / Comment

2021-03-16 18:00:15 Explanation

Quadrangular space is a passageway for the nerves and vessels between axilla anteriorly and scapular region posteriorly.

It contents are axillary nerve and posterior circumflex humeral artery & Vein

Quadrangular space syndrome is a condition caused by hypertrophy or fibrosis of quadrangular space muscles which impinge on axillary nerve.

Patient present with weakness of shoulder movements. Open / Comment

2021-03-15 18:00:13 Organism: Incubation period

Staphylococcus aureus: Less than 8 hours

Bacillus cerus: 2-16 hours

Clostridium perfringens: 8-22 hours

Vibrio cholerae: 6-72 hours

Salmonella species: 12-48 hours

Yersinia enterocolitica: 16-48 hours

Clostridium botulinum: 18-36 hours

Shigella spp: 24-72 hours

Enterotoxigenic Escherichia Coli: 24-72 hours Open / Comment

2021-03-14 18:00:14 Explanation

Patient has hyperparathyroidism, an over secretion of PTH from parathyroid gland.

PTH leads to increased calcium absorption from the diet and release of calcium from the bone, thereby weakening the bones.

The increased calcium in kidney can lead to formation of insoluble salts, leading to kidney stone formation.

Because there is elevated calcium in circulation, hypercalcemia is observed. Open / Comment

2021-03-13 18:00:13 Explanation

Cranial nerve 3 is pure motor nerve and performs ocular movement

Crania nerve 5 performs mastication and is sensory to face

Cranial nerve 9 is a mixed nerve and carries taste from posterior 1/3rd of tongue and performs swallowing with help of stylopharyngeus.

Cranial nerve 8 is pure sensory nerve associated with hearing and balancing. Open / Comment