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FIRST MONTH .The embryo is markedly curved on itself, and when viewed in

profile is almost circular in outline. The cerebral hemispheres appear as hollow buds, a

he elevations which form the rudiments of the auricula are visible. The limbs now

appear as oval flattened projections

SECOND MONTH -The flexure of the head is gradually reduced and the neck is

somewhat lengthened. The upper lip is completed and the nose is more prominent. Thenostrilsare directed forward and the palate is not completely developed. The eyelids are

present in the shape of folds above and below the eye, and the different parts of the

auricula are distinguishable. By the end of the second month the fetus measures from 2

o 30 mm. in length

The head is extended and the neck is lengthened. The eyelids meet and

fuse, remaining closed until the end of the sixth month. The limbs are well-developed a

nails appear on the digits. The external generative organs are so far differentiated that

s possible to distinguish the sex. By the end of this month the length of the fetus is abo

7 cm., but if the legs be included it is from 9 to 10 cm.

The loop of gut which projected into the umbilical cord is withdrawn

within the fetus. The hairs begin to make their appearance. There is a general increase

size so that by the end of the fourth month the fetus is from 12 to 13 cm. in length, but i

he legs be included it is from 16 to 20 cm.

FIFTH MONTH-It is during this month that the first movements of the fetus are usua

observed. The eruption of hair on the head commences, and the vernix caseosabegins to

deposited. By the end of this month the total length of the fetus, including the legs, is

from 25 to 27 cm

The body is covered by fine hairs (lanugo) and the deposit of vernix

caseosa is considerable. The papill of the skin are developed and the free border of thenail projects from the corium of the dermis. Measured from vertex to heels, the total

ength of the fetus at the end of this month is from 30 to 32 cm.

The pupillary membrane atrophies and the eyelids are open. The test

descends with the vaginal sac of the peritoneum. From vertex to heels the total length at

he end of the seventh month is from 35 to 36 cm. The weight is a little over three pound

The skin assumes a pink color and is now entirely coated with vernix

caseosa, and the lanugo begins to disappear. Subcutaneous fat has been developed to a

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considerable extent, and the fetus presents a plump appearance. The total length, i.

e., from head to heels, at the end of the eighth month is about 40 cm., and the weight

varies between four and one-half and five and one-half pounds.

The lanugo has largely disappeared from the trunk. The umbilicus is

almost in the middle of the body and the testes are in the scrotum. At full time the fetus

weighs from six and one-half to eight pounds, and measures from head to heels about 50

cm

Submitted by: MR. CECILIO Q. ALVAREZ JR.

Submmitted to : MS. VICTORIA BASA