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Embryo 3
Stack #85634
| Question | Answer |
|---|---|
| Q. What does the sinus venosus form? | A. R.Atrium |
| Q. What does the sinus venosus form? | A. R.Atrium |
| Q. Atrium | A. L&R Atrium |
| Q. Ventricle | A. L ventricle |
| Q. Bulbos Cordus | A. Prox.= trabeculate R. Ventricle, Distal= outflow roots of both ventrilces |
| Q. Truncus Arteriosus | A. Pulmonary Trunk and Aorta |
| Q. Primordial Interventricular septum | A. Muscular part of IV septum |
| Q. Dorsal Aorta | A. Median sacral artery |
| Q.Vitelline arteries | A. 1)celiac trunk 2)superior 3)inferior mesenteric artery, supplies yolk sac |
| Q.Brachiocephalic trunk | A. supply blood to arm & head |
| Q.Umbilical arteries | A. (after birth) proximal=internal iliac arteries and sup. visceral arteries, Distal=medial umbilical ligaments (wk 4) connects w/ common iliac artery |
| Q. dorsal aorta | A. umbilical arteries |
| Q. Arch 1 | maxillary arteries |
| Q. ductus arteriosus | A. 1)prenatal shunt b/w pulmonary artery and aorta 2)left recurrent laryngeal n. passes inferior |
| Q. distal pulmonary arch degenerates | A. allow R recurrent laryngeal n. to rise and hook around R subclavian artery |
| Q. What makes up the Aortic sac (ascending aorta) | A. L=arch of aorta, R=brachiocephalic trunk |
| Q. aortic arch | A. aortic sac, L 4th aortic arch, L dorsal aorta |
| Q.primordial veins | A.vitelline veins(yolk sac), umbilical vieins (chorion), common,ant. and post cardinal veins |
| Q. constriction of aorta | A. postducal (disal to ductus arteriosus, collateral circulation), preductal (no effect prenatally due to patent DA, severe hypoperfusion postnatally) |
| Q.vitelline veins | A. Hepatic portal veins (duodenum), hepatic sinusoids and veins (septum transversum), inferior vena cava (hepatic portion) |
| Q.Umbilical veins | A. R=regresses, L=umbilical vein (carries ox blood to embryo), ductus venosus (shunt in liver) |
| Q.anterior cardinal veins | A. L brachiocephalic, sup. vena cava, |
| Q.posterior cardial veins | A. mostly regress, root of azygos vein & common iliac veins |
| Q.supracardinal veins | A.intercostal veins |
| Q.subcardinal veins | A.drain developing kidneys |
| Q.hepatic segment of Inferior vena cava | A.hepatic vein(R vitelline) |
| Q.prerenal segment (IVC) | A.R subcardinal |
| Q.renal segment (IVC) | A. subcardinal & supracardinal anastomoses |
| Q.postrenal (IVC) | A. R supracardinal veins |
| Q. Umbilical vein becomes | A. ligamentum teres hepatis |
| Q. ductus venosus becomes | A. ligamentum venosum (b/w portal vein & inf. vena cava) |
| Q. umbilical arteries become | A. medial umbilical ligament & bladder |
| Q. foramen ovale becomes | A. fossa ovalis (funcional closure @ birth, anatomic by 3 months) |
| Q. ductus arteriosus become | A. ligamentum arteriosum (12wks) |
| Q. Patent ductus arteriosus can be associated with what? | A. rubella,premature infants, respiratory distress syndrome (under inflation of lungs) |
| Which of the 3 primary germ layers forms the endocardial heart tube? | A. mesoderm |
| What is frequently seen in premature infants? | A. patent ductus arteriosus |
| Which foramen persists throughout fetal development? | A. foramen secundum |
| Interventricular septal defects are seen in which of the following conditions? | A. persistent truncus arteriosus, unequal division of the truncus arteriosus |
| The brachiocephalic trunk is derived from the left horn of the aortic sac. T/F | A. false, from the right horn |
| The L brachiocephalic vein connects the ___ vein with the ___ vein. | A. left ant. cardinal, right ant. cardinal |
| Which of the following contribute to the formation of the inferior vena cava? | A. subcardinal veins, supracardinal veins, sacrocardinal veins |
| Which of the following allow blood to bypass the lungs during fetal life? | A. ductus arteriosus |
| Which of the following develops from the ductus venosus? | A. ligamentum venosum |
| The foramen ovale allows blood to bypass the ___ circulation. | A. pulmonary |
| At the time of birth the foramen ovale closes functionally ___ the ductus arteriosus. | A. earlier than |
| The smooth muscle ct and cartilage of the primary bronchus are derived from: | A. splanchnic mesoderm |
| Which of the following is responsible for separating the respiratory diverticulum from the primitive foregut? | tracheoesophageal septum |
| At which of the following developmentall stages is the fetus absolutely not vable? | pseudoglandular |
| Kupffer cells of the adult liver are derived from: | A. splanchnic mesoderm |
| Which of the following arteries supplies derivatives of the foregut? | A. celiac gut |
| Origin of stomach? | A. foregut |
| origin of duodenum? | A. foregut and midgut |
| origin of transverse colon? | A. midgut and hindgut |
| Somatic efferent | A. CN III, IV, VI,XIII |
Created by:
Allpurpose
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