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What does placenta mean in Greek? |
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When does the placenta become fully functional? |
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Endocrine functioning units of the placenta. |
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Four functions of the placenta. |
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Definition
1. nutrition 2. pulmonary 3. renal (waste removal) 4. produces hormones |
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What hormones does the placenta produce? |
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Definition
hcg, progesterone and estrogen |
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Where does nutrient and blood exchange occur in the placenta? |
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Definition
lacunae, clefts, or intervillous spaces |
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Placental size is directly proportional to: |
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Placental function is directly related to: |
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When the AP thickness of the placenta is greater than 5 cm. |
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Hypoechoic areas of the placenta lacking flow could be: |
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Definition
fibrin deposits and/or thrombosis |
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Ischemic necrosis of placental villi resulting from interference with maternal blood flow to the intervillous space. |
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What grade placenta shows suttle indentations? |
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What grade placenta shows comma like indentations? |
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What grade placenta shows comma like indentations projecting to the basalar plate? |
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What abnormal intraplacental lesion has increased hcg, but no embryo? |
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What abnormal intraplacental lesion has a non-viable embryo? |
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A blood vessel tumor appearing as a hypoechoic, well-circumscribed mass beneath the chorion? |
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Is a teratoma in the placenta benign or malignant? |
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What kind of placenta may be associated with vaginal bleeding and may require a c-section delivery? |
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What three factors are associated with placenta previa? |
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Definition
1. AMA 2. multiparity 3. prior c-section/surgery |
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What type of previa has a vessel overlying the os? |
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What is the most common cause of painless 2nd and 3rd trimester bleeding? |
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Chorionic plate is smaller than basalar plate resulting in a shelf or folding appearance of the placenta. |
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Extra lobes of the placenta with vessels. |
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Definition
succenturiate placenta (accessory) |
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Placenta divided into two lobes but united by primary vessels and membranes. |
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Ring shaped placenta attaches like a belt to the myometrium. |
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Placenta covers all or most of the sac. |
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Accumulation of blood beneath the chorionic plate. |
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When is a subchorionic hematoma most commonly seen? |
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Premature detachment of all or part of the placenta from the uterine wall before delivery of the fetus. |
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What are the two types of placenta abruptions? |
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Chorionic villi invades the myometrium. |
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What are the types of accretas, from mild to severe? |
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Definition
accreta, increta, percreta |
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Term
Insertion of the cord along the margin of the placenta. |
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Insertion along the free membranes of the placenta. |
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Definition
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Velamentous cord insertion is associated with what? |
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Definition
vaso previa and succenturiate lobe |
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