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Embryo Mash 3 NWHSU

QuestionAnswer
In detail, why does the stomach rotate clockwise around its vertical axis? -Dorsal mesentary grows -rotation occurs because right mesentary breaks down
Specifically from what does the infracardiac bursa develop? Specifically where is it located? from superior recesses of the omental bursa forming cycstic structure posterior and lung not above the diaphragm
Draw a simple diagram showing the bell stage of tooth development. Lable embryonic layers which have adult crown derivatives. include the adult derivatives Inner dental epithelium of crown (enamel), outer mesenchymal cells of dental papill (dentin), inner messenchymal cells of dental papilla (pulp)
True or false The primitive choanae are located behind the primary palate true
True or false paranasal sinuses are formed when bones are excavated true
True or false surfactant is produced at 7 months of fetal development true
True or false in tracheoesophageal fistula, rarely do both the proximal and distal parts of the esophagus open into the trachea true
true or false by the time the lung reaches adult maturity, a total of 17 generations of subdivisions form the bronchial tree False
True or false Tracheoesophageal fistulas usually connect to trachea at the tracheas upper end false
True or false at birth the tracheal bifurcation is at T6 False
True or false The oronasal membrane lies just behind the secondary palate false
True or false Endoderm forms the epithelium of the paranasal sinuses False
What specific embryonic vessels (give right or left if necessary) give rise to: Oblique vein of Marshall Left common cardinal
What specific embryonic vessels (give right or left if necessary) give rise to: gonadal veins subcardinals
Discuss in detail the development of the ductus venosus. The liver grows L to R over the umbillical and vitelline vein. The lumbilicus v and R vitelline Vein are connected to help blood flow of the heart and later become ductus venosus.
Concerning development of the portal vein: What embryonic veins are responsible for its formation? The vitellines are responsible for formation
Concerning development of the portal vein: What specific part of the vein remains to form the portal? R UG of cervical ring and the middle anatamosis remain
What specific embryonic vessels (give r or l if necessary) give rise to: Internal jugular vein Cranial parts of precardinals
What specific embryonic vessels (give r or l if necessary) give rise to: Distal left renal vein L sub-supracardinal anatamosis
Discuss the development of the inferior vena cava. Include segments and embryonic vessels responsible. Use r or l if necessary. Both segment and embryonic vessels must be correct. Hepatic-Common Hepatics Pre Renal-R subcaridinal Renal-R sub-supracardinal anastamosis Post renal-R supracardinal
Name Adult arteries which develop from the vitellines -celiac A -Superior mesenteric A -Inferior mesenteric A
Besides the umbilicals, name 2 different arteries that develop from the embryonic unbilical arteries. -Internal Iliac -Superior and middle vesical
Specifically how and where does the omental bursa begin its development -as clefts/cavities/spaces -on the doral mesogastrium
True or False Only about 1/6 of the adult alveoli are present at birth True
True or false The laryngotracheal groove develops from the pharynx during the 4th week of development True
True or false Endoderm gives rise to the epithelium, but not connective tissue of the larynx, bronchi, and lungs. True
In tracheoesophageal fistula, there is usually an additional fibrous cord attached to the larynx. False
The trachea develops from which Endoderm, ectoderm, mesoderm or mixture? Endoderm and Mesoderm
True or false At birth the tracheal bifurcation lies at T4 True
true or false Ectopic lung lobes arise from the trachea or esophagus true
Using the terms regresses and persists, give the fate of the right and left proximal and distal segments (distal to that part toward the placenta) of the umbilical veins: (Left umbilical Prox ______ Dist ______) (Right umbilical Prox ____ Dist _____) (Left Umbilical Proximal regresses, Distal Persists) (Right umbilical proximal regresses, Distal regresses)
Briefly discuss the formation of the left brachiocephalic vein. anastomosis between precardinals
What specific embryonic vessels (l and r if necessary) give rise to: Hepatic sinusoids Vitellines R and L
hat specific embryonic vessels (l and r if necessary) give rise to:hat specific embryonic vessels (l and r if necessary) give rise to: Suprarenal veins Subcardinals R and L
What lymphatic sacs may be responsible for: Deep cervical nodes- Lumbar nodes- deep cervical-jugular sacs lumbar nodes-retroperitoneal
What embryonic component of the bell stage of tooth development gives rise to: the cells that form the pulp inner mesenchymal cells of dental papilla
t embryonic component of the bell stage of tooth development gives rise to: Dentin (odontoblasts) outer mesenchymal cells of dental papilla
Mesenchyme imediately peripheral to the dentin of the root of a developing tooth forms what two components cementum and peridontal membrane
What specific embryonic vessels (give l and r if necessary) gives rise to: Right renal vein intersubcardinal anastomosis
What specific embryonic vessels (give l and r if necessary) gives rise to: Proximal left renal vein intersubcardinal anastomosis
Name the adult components formed from the primary head vein. Dural venous sinus Cerebral veins
Give the name of the embryonic component that specifically forms: Enamel Dental Cuticle Enamal-inner dental epithelium Dental cuticle-stellate reticulum
In detail discuss how the pancreas becomes retroperitoneal. Mesoduodenum on the right and mesogastrium on the left fuse together at the dorsal body wall
During development of the arteries within the limb bud, a main ventral ______ vessel develops by enlargement and consolidation of the capillary plexus vessels. axial vessels
Discuss the development of the vertebral artery. The dorsal ramus of the dorsal intersegment fuse via anastomosis between 1-7 forming the vertebral artery
What specific embryonic vessels form: hepatic veins R vitelline
What specific embryonic vessels form: Superior vena cava R common cardinal and R precardinal
What specific embryonic vessels form: hemiazygos, accessory hemiazyogos supracardinal Vein
What components comprise the ventral mesentery? falciform ligament, lesser omentum
Created by: T1NWHSU
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