Embryology And Histology

Question 1

Sclerotome forms

Answer 1

Vertebral column, myotome, dermatome

Question 2

Somites comes from which layer?

Answer 2

Mesoderm

Question 3

Neural plate develops into

Answer 3

MOANER
Macroglial cells (oligodendrocytes & astrocytes)
Neurons CNS
Ependymal cells
Retinal cells

Question 4

Ectoderm gives rise to…

Answer 4

Notochord, ectoderm, neural plate

Question 5

Foramen ovale becomes

Answer 5

Fossa ovalis (between interatrial septum)

Question 6

Ductus Arteriosus becomes

Answer 6

Ligamentum arteriosum (bypasses lung pulmonary trunk to arch of aorta)

Question 7

Ductus venosus becomes

Answer 7

Ligamentum venosum (bypasses sinusoids of fetal liver)

Question 8

Umbilical vein becomes

Answer 8

Ligamentum teres (round ligament)

Question 9

Umbilical arteries become

Answer 9

MEDIAL umbilical ligaments

Question 10

Urachus is a remnant of the

Answer 10

Duct of Allantois

Question 11

Skeletal structures from C.N. V3

Answer 11

Malleus (Meckel’s cartilage)

Incus (Quadrate cartilage)

Question 12

Skeletal structures of C.N. VII

Answer 12

Stapes and Styloid

Question 13

Skeletal structures of C.N. IX

Answer 13

Cornu and hyoid

Question 14

Skeletal structures of superior laryngeal of X

Answer 14

Thyroid cartilage

Cricoid cartilage

Question 15

Skeletal structures of Inferior laryngeal of X

Answer 15

Arytenoid
Corniculate cartilage
Cuneiform cartilage

Question 16

Mandibular branch of V (V3) supplies which muscles

Answer 16

Muscles of Mastication

Jaw-CLOSING muscles

Question 17

Muscles of Mastication

Answer 17

Masseter
Temporalis
Medial PTERYGOID
Lateral PTERYGOID

Question 18

Which muscle closes the jaw?

Answer 18

Medial PTERYGOID

Question 19

Which muscle opens the jaw?

Answer 19

Lateral PTERYGOID

Question 20

Facial nerve (VII) supplies which muscles?

Answer 20

Muscles of facial expression
And jaw opening muscles (lateral PTERYGOID)
Styohyoid, stapedius

Question 21

Which muscle does the glossopharyngeal nerve supply?

Answer 21

Stylopharyngeus

Question 22

Which muscles does the superior laryngeal nerve of the vagus supply?

Answer 22

Pharyngeal
Cricothyroid
Levator palatine

Question 23

Which muscle does the inferior laryngeal nerve of the vagus (recurrent branch)?

Answer 23

Laryngeal

Question 24

Vertebral column forms from

Answer 24

Sclerotome (somite cells)