Term
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Definition
- Spinal cord is formed and fused at the midpoint.
- Head folds forward and is prominent.
- The back is bent, which makes the head almost touch the tail.
- A prominent bulge appears which would later form as the heart.
- Lateral wings, the body, folds forward and fuse at midline.
- Arms and legs are budlike structures.
- Eyes, ears, and nose are barely recognizable.
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Term
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Definition
- Organogenesis is achieved and complete.
- The heart already developed a septum and valves and is beating rhythmically.
- Arms and legs have developed.
- Facial features are noticeable.
- The genital starts to form but is not yet recognizable.
- Fetal intestine is rapidly growing.
- Results of an ultrasound would show a gestational sac which confirms pregnancy.
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Term
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Definition
- The toes and fingers already have nail beds.
- Faint fetal movements are starting.
- Early reflexes are present.
- Tooth buds are forming.
- Formation of bone ossification centers initiate.
- The genital is already recognizable through its appearance.
- Urine secretion begins but is not yet evident.
- Heartbeat could be detected by Doppler.
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Term
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Definition
- An ordinary stethoscope could detect the fetus’ heart beat.
- Lanugo has started to form.
- The pancreas and liver are forming.
- Urine is present in the amniotic fluid.
- Fetus starts to swallow the amniotic fluid.
- Ultrasound could determine the sex of the fetus.
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Term
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Definition
- Mother could sense spontaneous fetal movements.
- There is hair formation on the head until the eyebrows.
- The upper intestine contains meconium.
- Brown fat starts to form behind the kidneys, sternum, and posterior neck.
- Vernix caseosa also starts to form and covers the skin.
- Passive antibody transfer begins.
- The sleep and activity patterns of the fetus are evident.
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Term
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Definition
- Lung surfactant begins to develop.
- Meconium is present at the rectum.
- Eyebrows and eyelashes are distinguishable.
- Eyelids can now open.
- Pupils react to light.
- The fetus has reached the age of viability, wherein they could survive externally if cared for in a modern intensive facility.
- Responds to sudden sounds
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Term
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Definition
- Surfactant is demonstrated in the amniotic fluid.
- Alveoli are starting to mature.
- Testes descend into the scrotal sac.
- Retinal blood vessels start to form but are highly susceptible to damage.
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Term
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Definition
- Subcutaneous fat is deposited.
- Fetus responds to sounds outside the mother’s body through movements.
- Active Moro reflex is present.
- Iron stores are starting to develop.
- Fingernails are starting to grow.
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Term
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Definition
- Depositions of iron, carbohydrate, calcium, and glycogen stores are in the body.
- Additional subcutaneous fats are deposited.
- One or two creases are present at the sole of the foot.
- Lanugo starts to diminish.
- Some babies turn and assume a vertex presentation.
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Term
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Definition
- Fetus now kicks very actively and hard enough to cause discomfort.
- The fetal hemoglobin is being converted to adult hemoglobin.
- Vernix caseosa is fully formed.
- Fingernails extend to the fingertips.
- The soles of the feet have creases that cover at least two-thirds of the surface.
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