Appendix 1
The Chronological Development of The Unborn Child

 

Seventh Week

 

 

Source
The eyes are developing rapidly. 7th week after conception Rugh, p 52
The ears are developing rapidly.
7th week after conception Rugh, p 52
Thumbs and fingers with pads are present. 7th week after conception Rugh, p 44
All the fingers are present. 7th week after conception Rugh, p 52
The jaws, ribs, and vertebrae are changing from cartilage to bone. 7th week after conception Rugh, p 52
The fetal heart is functionally complete and normal. 7th week after conception Rugh, p 53
The heels are developing. 7th week after conception Rugh, p 44
Bronchi begin to form in the right and left lung. 7th week after fertilization Moore, p 262
The first indication of limb musculature is observed. 7th week of development Sadler, 7th ed., p 168
A distinct neck connects the head with the body. 7th week after conception Rugh, p 51
The nasal chamber is developing. 7th week Sadler, p 376
The primary palate is developing. 7th week Sadler, p 376
The anorectal canal is developing. 7th week Sadler, p 316
The gonads acquire male or female characteristics. 7th week of development Sadler, p 319
Neck and trunk muscles start contracting spontaneously. 7th week after fertilization England, p 206
Startles first occur. 7th week after conception Roodenburg, p 33
Startles were observed in 12 of 12 fetuses studied, with a median number of about 42 per hour. 7th week after conception. de Vries (1985), p 104
Isolated arm movements first occur. About 7 1/4 to 8 1/2 weeks after conception de Vries (1982), p 311
Isolated leg movements first occur. About 7 1/4 - 10 1/2 weeks after conception de Vries (1982), p 311
Backwards head movements first occur. 7 1/2 - 10 1/2 weeks after conception Nijhuis/de Vries, p 5
Head rotations first occur. 7 1/2 - 10/12 weeks after conception Nijhuis/de Vries, p 5
Ossification of the bones of the upper limbs has begun. End of the 7th week after fertilization Moore, p 96
The toes are well-formed. 7th-8th weeks Sadler, p 108
The fingers are developing. Day 43 after fertilization Sadler, front pages
Toe rays are developing. Day 43 after fertilization Sadler, front pages
The eyelids are formed. Days 43-49 of development Sadler, p 110
Pigmentation of the retina can be seen. Days 43-49 of development Sadler, p 110
Digital foot rays are separating. Days 43-49 Sadler, p 110
Digital rays are spearating Days 43-49 of development Sadler, p 110
The upper lid is forming. Days 43-49 of development Sadler, p 110
The elbows appear. Day 44 after fertilization Larsen, p xii
The palate is forming. Day 44 after conception Rugh, p 50
Nipples are formed. Days 43-49 of development Sadler, p 110
The eyelids form in the face. Day 44 after fertilization. Larsen, p xii
The nerve cells of the retina form. Day 44 after conception Rugh, p 50
The first hair follicles appear. Day 44 after fertilization Larsen, p xii
Nipples appear. Day 44 after fertilization Larsen, p xii
Toe rays appear. Day 44 after fertilization Larsen, p xii
The elbow region is visible. Days 44-46 after fertilization Moore, p 91
Digital rays can be seen clearly in the foot plates. Days 44-46 after fertilization Moore, p 91
Notches are present between the digital rays in the hand. Days 44-46 after fertilization Moore, p 91
Nipples are visible. Days 44-46 after fertilization Moore, p 91
The nasal passages open to the outside. Day 46 after conception Rugh, p 51
Microscopic examination can identify the embryo's sex because the ovaries and testes have differentiated. Day 46 after conception Rugh, p 51
The bridge of the nose is visible. Days 47-48 after fertilization England, p 78
The cheek is visible. Days 47-48 after fertilization England, p 83
The knees are developing. Days 47-48 after fertilization England, p 180
The nerve connections from the retina to the brain are established. Day 48 after conception Rugh, p 51
The face becomes fuller and starts to look human. Day 48 after conception Rugh, p 51
The stomach is a scale model of what it will be at the time of birth. Day 48 after conception Rugh, p 52
The toes are developing. Day 48 after fertilization Sadler, front pages
The tongue forms from the floor of the mouth. Day 48 after conception Rugh, p 51
The liver is developing. About 48 days after fertilization Moore, p 99
The wrist is developing. About day 48 after fertilization Moore, p 99
Notches appear between the digital rays in the feet. Days 49-51 after fertilization Moore, p 91
The upper limbs are longer and bent at the elbows. Days 49-51 after fertilization Moore, p 91
The rudiment of the face is created. Days 49-63 Larsen, p 230
     


 


Download the report
(1,255 KB, Word doc)