901. The hypertrichosis is the developmental abnormality comprised of :
A. Absence of hair
B. Abundance of hair *
C. Absence of lanugo hair
D. Abundance of sweat gland
902. The trigone of the urinary bladder develops from :
A. Metanephric blastoma
B. Mesonephric duct*
C. Para mesonephric duct
D. Cloaca
903. Spinal bifida occulta is most commonly found in which of the following regions ?
A. Cervical
B. Upper thoracic
C. Midthoracic
D. Lumbosacral *
904. Regarding the primitive pleural cavities :
A. Originate from the pericardioperitoneal canals *
B. Are lined by pleurae derived from endoderm
C. Are formed from the original extraembryonic coelom
D. None of the above
905. Intermaxillary segment gives rise to :
A. Secondary palate
B. Upper jaw component having four incisor teeth *
C. The upper lip
D. Orbicularis oris muscle
906. Derivatives of hindgut include :
A. Ascending colon
B. Vermiform appendix
C. Rectum *
D. Caecum
907. The most common site of thyroglossal cyst is :
A. Base of tongue
B. Close to hyoid bone *
C. Anterior to thyroid cartilage
D. Posterior to thyroid cartilage
908. The right horn of sinus venosus is the precursor of the :
A. Pectinate wall of the left atrium
B. Pectinate wall of the right atrium
C. Smooth wall of the right atrium *
D. Coronary sinus
909. Meckel’s diverticulum is a result of :
A. Improper retraction of herniated intestinal loops
B. Congenital umbilical hernia
C. Abnormal rotation of the primitive intestinal loop
D. Persistence of a portion of the vitelline duct *
910. Which of the following is not a muscle of the first arch ?
A. Tensor tympani
B. Lateral pterygoid
C. Mylohyoid
D. Posterior belly of digastric *