24-hour Chick Embryo

Question 1

How many pairs of somites are in 24 hour chick embryo?

Answer 1

4 pairs of somites

Question 2

Area opaca is divided into two parts namely _

Answer 2

Area vasculosa
Area vitellina

Question 3

Inner region adjacent to the area pellucida. It is darker than the outer region because of the underlying mesoderm which makes it thicker.

Answer 3

Area vasculosa

Question 4

Outer peripheral region of the area opaca which is lighter in appearance.

Answer 4

Area Vitellina

Question 5

Appear as dark bands in the cephalic part of the embryo. They arise from the neural plate which becomes longitudinally folded

Answer 5

Neural folds

Question 6

Depression formed by longitudinal foldings of neural plate

Answer 6

Neural groove

Question 7

Appears as faint line in the middle of the neural groove.

Answer 7

Notochord

Question 8

What hour will one somite per hour change.

Answer 8

40th hour

Question 9

Located in the lower 1/2 of blastoderm

Answer 9

Hensen’s node

Question 10

Located more caudally