Term
| Head constitutes half of the crown-heel length |
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Definition
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Term
| Broad face, widely separated eyes, low-set ears |
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Definition
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|
Term
| Primary ossification centers begin to appear |
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Definition
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|
Term
| Upper limbs almost full-length, lower limbs not as developed |
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Definition
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|
Term
| External genitalia begin to differentiate |
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Definition
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Term
| Intestinal coils return from umbilical cord to fetal abdomen |
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Definition
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|
Term
| Erythropoiesis shifts from liver to spleen |
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Definition
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|
Term
|
Definition
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|
Term
|
Definition
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Term
| Limb movements begin, but are unnoticeable |
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Definition
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|
Term
|
Definition
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|
Term
|
Definition
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|
Term
| Scalp hair patterning is determined |
|
Definition
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|
Term
| Sex of fetus becomes clearly recognizable |
|
Definition
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|
Term
| Eyes begin to face anteriorly (instead of anterolaterally) |
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Definition
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|
Term
| Ears move to proper position on sides of head |
|
Definition
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|
Term
|
Definition
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|
Term
| Fetal movements (quickening) commonly felt |
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Definition
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|
Term
| Skin is covered in "vernix caseosa" |
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Definition
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|
Term
| Eyebrows and head hair become visible |
|
Definition
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|
Term
| "Lanugo"- fine, downy hairs, cover the body |
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Definition
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|
Term
| Brown fat- a primary heat producer- is formed |
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Definition
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|
Term
| Ovaries are differentiated and contain primordial oogonia |
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Definition
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|
Term
| Uterus is formed and canalization of the vagina begins |
|
Definition
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|
Term
|
Definition
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|
Term
| Period of substantial weight gain |
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Definition
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|
Term
| Rapid eye movements begin |
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Definition
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|
Term
| Type 2 pneumocytes begin to secrete surfactant |
|
Definition
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|
Term
| Fingernails become present |
|
Definition
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|
Term
| First point at which premature delivery may be successful, although resp. system is still very immature |
|
Definition
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|
Term
| Stage wherein premature delivery often results in survival |
|
Definition
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|
Term
| Lungs and pulmonary vasculature are sufficiently developed to provide adequate gas exchange |
|
Definition
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|
Term
| CNS can direct breathing and control body temperature |
|
Definition
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|
Term
|
Definition
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|
Term
|
Definition
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|
Term
| Period during which quantity of white fat increases significantly |
|
Definition
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|
Term
| Erythropoiesis shifts from the spleen to bone marrow |
|
Definition
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|
Term
| MRIs produce clear images |
|
Definition
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|
Term
| Pupillary light reflex of the eyes is effective |
|
Definition
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|
Term
| Period during which premature delivery usually results in survival |
|
Definition
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|
Term
| "Premature by date" as opposed to "premature by weight" |
|
Definition
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|
Term
|
Definition
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|
Term
| Spontaneous orientation to light |
|
Definition
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|
Term
| Circumferences of the head and abdomen are approximately equal |
|
Definition
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|
Term
| Testes descend into the scrotum |
|
Definition
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