Anatomy MCQs Past Papers | First Online Test of B48 First Year | mosaicbro.com
Anatomy MCQs Past Papers | First Online Test of B48 First Year
This is part of Chandka Medical College 1st Year Question Bank Past Paper Series Anatomy.
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Review Answers:
8
The Buccopharyngeal membrane marks the site of the future?
Correct Answer:D
Explanation:
The buccopharyngeal membrane (ectoderm + endoderm) ruptures at week 4 to form the oral opening. The cloacal membrane similarly forms the anus.
9
Piriformis is supplied by which of the following nerve?
Correct Answer:D
Explanation:
Piriformis is innervated by ventral rami of S1-S2. It is the key landmark in the gluteal region - the sciatic nerve exits below it (85% of cases) or through it (15%).
10
Connective tissue cells found in capillaries and correspond to fibroblast like properties are?
Correct Answer:C
Explanation:
Pericytes (Rouget cells) wrap around capillaries, sharing a basement membrane with endothelial cells. They regulate blood flow, angiogenesis, and can differentiate into fibroblasts/myofibroblasts.
11
The short head of biceps femoris muscle is innervated by which one of the following nerves?
Correct Answer:A
Explanation:
The short head of biceps femoris is the only hamstring muscle innervated by the common peroneal division of the sciatic nerve (L5-S2). All other hamstrings are tibial division.
12
Rough endoplasmic reticulum is concerned with?
Correct Answer:C
Explanation:
RER synthesizes secretory proteins (enzymes, hormones) and lysosomal enzymes. Ribosomes on RER translate mRNA into proteins that enter the ER lumen for modification and sorting.
13
Regarding intra muscular injection?
Correct Answer:C
Explanation:
The upper outer quadrant of the gluteal region (ventrogluteal site) is safest, avoiding the sciatic nerve. The femoral nerve is anterior and not at risk. Injections must penetrate muscle (not subcutaneous).
14
Implantation generally takes place at?
Correct Answer:A
Explanation:
The blastocyst implants into the functional layer (stratum functionalis) of the endometrium during the secretory phase (day 20-24). The basal layer regenerates the functional layer post-menstruation.