Additional Images
-
Surface view of embryo of Hylobates concolor.
-
Human embryo—length, 2 mm. Dorsal view, with the amnion laid open. X 30.
-
Dorsum of human embryo, 2.11 mm. in length.
-
Section through the embryo.
-
Diagram showing earliest observed stage of human ovum.
-
Diagram illustrating early formation of allantois and differentiation of body-stalk.
-
Diagram showing later stage of allantoic development with commencing constriction of the yolk-sac.
-
Diagram illustrating a later stage in the development of the umbilical cord.
-
Fetus of about eight weeks, enclosed in the amnion. Magnified a little over two diameters.
-
Model of human embryo 1.3 mm. long.
-
Section through ovum imbedded in the uterine decidua
-
Human embryo about fifteen days old. Brain and heart represented from right side. Digestive tube and yolk sac in median section.
Read more about this topic: Yolk Sac
Famous quotes containing the words additional and/or images:
“The world will never be long without some good reason to hate the unhappy; their real faults are immediately detected, and if those are not sufficient to sink them into infamy, an additional weight of calumny will be superadded.”
—Samuel Johnson (1709–1784)
“We picked each other from afar and knew
What hour of terror comes to test the soul,
And in that terror’s name obeyed the call,
And understood, what none have understood,
Those images that waken in the blood.”
—William Butler Yeats (1865–1939)