GA2 EMBRYO MASH 3
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| Give the name of the embryonic component (not germ layer or cells) that specifically forms: a) enamel b) dental cuticle | show 🗑
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| Besides the medial umbilical ligaments, give the derivatives of the embryonic umbilical arteries | show 🗑
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| Briefly discuss the formation of the left brachiocephalic vein | show 🗑
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| Concerning development of the portal vein: (a) what embryonic vein(s) is/are responsible for its formation? (b) what specific part(s) of the vein(s) remain(s) to form the portal? | show 🗑
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| show | The liver grows laterally to the umbilical vv and allows for a more direct route to the heart through hepatic sinusoids. The diagonal blood flow between left & right vitelline veins eventually form the ductus venosus.
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| Discuss the development of the inferior vena cava. Include segments and embryonic vessels responsible. Use right or left if necessary. Both segment and embryonic vessels must be correct to receive ANY credit. | show 🗑
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| show | Form from anastamosis of the dorsal rami 1-7, therefore, they take origin from the 7th dorsal intersegmental & travel upward
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| Draw a simple diagram showing the 'bell'stage of tooth development. Now label ONLY the embryonic layers which have ADULT CROWN derivatives. LASTLY, include in parentheses ( ) the adult derivative. | show 🗑
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| show | axial
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| show | a) inferior phrenic artery, suprarenal artery, renal artery, and testicular or ovarian artery b) internal iliac aa., umbilical aa., superior & middle vesical aa.
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| Give the name of the embryonic component (not germ layer or cells) that specifically forms: a) enamel b) dental cuticle | show 🗑
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| show | Left side of dorsal mesogastrium & right side of dorsal mesoduodenum fuse with dorsal body wall pancreas becomes reteroperitoneal
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| show | Dorsal mesentary of omental bursa lengthens & moves to left due to clefts on the right side of dorsal mesentary causing stomach to rotate 90 degrees.
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| show | Cementum, periodontal membrane
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| Name ADULT arteries which develop from the vitellines | show 🗑
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| Name the ADULT arteries which develop from the VENTRAL rami of dorsal intersegmentals. | show 🗑
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| show | Superficial layer – dural venous sinuses, Deep layer – cerebral veins
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| show | Falciform ligament, lesser omentum
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| show | The superior recess of the omental bursa grows cranially to the right lung bud above diaphragm. Usually disappears but can form cystic structure posterior to root of the lung.
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| Specifically, how and where does the omental bursa BEGIN its development? | show 🗑
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| show | Inferior epigastric vessels
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| show | TRUE
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| T or F: _______ ectopic lung lobes arise from the trachea or esophagus. | show 🗑
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| show | Superior - levator ani m.; Inferior - deep perineal space
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| The trachea develops from: a. endoderm b. ectoderm c. mesoderm d. ectoderm AND endoderm e. endoderm AND mesoderm f. ectoderm AND mesoderm | show 🗑
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| show | a) T
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| show | b) F
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| True or False c) endoderm forms the epithelium of the paranasal sinuses | show 🗑
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| True or False d) ectopic lung lobes arise from the trachea or esophagus | show 🗑
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| True or False e) surfactant is produced at seven months of fetal development | show 🗑
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| True or False f) primitive choanae are located behind the primary palate | show 🗑
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| Using (only) the terms REGRESSES and PERSISTS, give the fate of right and left proximal and distal segments (distal = that part toward the placenta) of the umbilical veins. | show 🗑
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| show | a. inner mesenchyme of dental papilla b. outer mesenchyme of dental papilla
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| What lymphatic sacs may be responsible for :a) deep cervical nodes- b) lumbar nodes- | show 🗑
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| What specific embryonic vessels (give right of left if needed) form: a. hepatic veins- b. left brachiocephalic vein- c. renal segment of the inferior vena cava- | show 🗑
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| What specific embryonic vessels (give right of left if needed) form: d. superior vena cava- e. hemiazygos, accessory hemiazygos and most of azygos- | show 🗑
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| What specific embryonic vessels (give right or left if necessary) give rise to: a) hepatic sinusoids b) suprarenal veins | show 🗑
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| What specific embryonic vessels (give right or left if necessary) give rise to: a) oblique vein of Marshall b) gonadal veins c) internal jugular vein d) distal left renal vein | show 🗑
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| show | a) intersubcardinal anastamosis b) intersubcardinal anasatmosis
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| show | TRUE
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| show | TRUE
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| show | a. the PRIMITIVE choanae are located behind the primary palate - T b. paranasal sinuses are formed when bones are excavated - T c. surfactant is produced at 7 months of fetal development - T
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| show | TRUE
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| Which is FALSE? d. in tracheoesophageal fistula, rarely do both the proximal and distal parts of the esophagus open into the trachea e. by the time the lung reaches adult maturity, a total of 17 generations of subdivisions form the bronchial tree | show 🗑
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| Which ONE of the following statements is FALSE? d. endoderm gives rise to the epithelium, but not connective tissue of the larynx, bronchi, and lungs | show 🗑
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| Which ONE of the following statements is FALSE? e. in tracheoesophageal fistula, there is usually an additional fibrous cord attached to the larynx | show 🗑
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Created by:
brookert81
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