ANAT2341 Lab 5 - Online Assessment: Difference between revisions
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This is not this weeks assessment item, that will be added above. | This is not this weeks assessment item, that will be added above. | ||
Have a look at the range and type of questions that some of your peers set for the Quiz assessment. | Have a look at the range and type of questions that some of your peers set for the Quiz assessment. Not all questions are on the GIT. | ||
* How many can you get right? | * How many can you get right? | ||
* How many of the questions are designed with the actual right answer? | |||
* What makes a good quiz question? | * What makes a good quiz question? | ||
* When the answer is revealed, does the explanation provided help your understanding of the concept? | * When the answer is revealed, does the explanation provided help your understanding of the concept? | ||
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<quiz display=simple> | <quiz display=simple> | ||
{1. The splanchnic mesoderm does '''not''' contribute to: | |||
|type="()"} | |||
+ epithelium | |||
- mesentery | |||
- blood vessels | |||
- smooth muscle | |||
||The splanchnic mesoderm is involved in the development of mesentery, connective tissue, smooth muscle, and blood vessels. The endoderm contributes to development of epithelium. | |||
{2. The correct order of blood supply for the foregut, midgut, and hindgut is: | |||
|type="()"} | |||
- inferior mesenteric artery, celiac artery, superior mesenteric artery | |||
- superior mesenteric artery, inferior mesenteric artery, celiac artery | |||
+ celiac artery, superior mesenteric artery, inferior mesenteric artery | |||
- celiac artery, inferior mesenteric artery, superior mesenteric artery | |||
||The foregut is supplied by the celiac artery, the midgut is supplied by the superior mesenteric artery, and the hindgut is supplied by the inferior mesenteric artery. | |||
{3. Which of these statements is '''false'''? | |||
|type="()"} | |||
- The right hepatic bud will eventually form the right lobe of the liver. | |||
- The cloaca initially forms a common urogenital and gastrointestinal space. | |||
- Meckel's diverticulum is a common abnormality caused by failed degeneration of the vitelline duct during development. | |||
+ The ventral mesentery is completely lost during development. | |||
||The ventral mesentery is lost except at the level of the stomach and the liver, and will eventually contribute to the development of the lesser omentum and the falciform ligament. | |||
{4. Which abnormality involves narrowing of the gastrointestinal tract lumen? | |||
|type="()"} | |||
+ stenosis | |||
- atresia | |||
- duplication | |||
- gastroschisis | |||
||Stenosis is narrowing of the GIT lumen. Atresia is interruption of the lumen, duplication is incomplete recanalisation leading to the formation of parallel lumens, and gastroschisis is an abdominal wall defect that results in herniation of the abdominal viscera into the amniotic cavity. | |||
{During Gastrulation, or gut formation, at the rostral and caudal end of the embryo which membrane breaks down first and when does it occur?: | |||
|type="()"} | |||
- buccopharangeal membrane at 6 weeks | |||
- cloacal membrane at 5 weeks | |||
+ buccopharangeal membrane at 4 weeks | |||
- coacal membrane at 4 weeks | |||
||At week 4 the '''buccopharangeal membrane''' breaks down first and now the foregut is open to the amniotic cavity and amniotic fluid will fill the foregut. The present '''cloacal membrane ''' breaks down afterwards and divides into '''urogenital sinus''' and '''rectum'''. | |||
{During Gastrulation which organ forms first after the heart tube, and at what week of embryo development does this occur?: | |||
|type="()"} | |||
- Pancreas at 5 weeks | |||
- Foregut of stomach at 6 weeks | |||
+ Liver at 4 weeks | |||
- Kidneys at 5 weeks | |||
||At week 4 beginning of stage 11 the primitive liver forms at the level of the transverse septum underneath the stomach bud. It is the first organ to form after the heart tube. | |||
{When the primitive stomach is forming in Week 4 how many turns does it need to take in order to form the correct adult anatomical position?: | |||
|type="()"} | |||
+ Two turns 90 degrees each | |||
- One turn at 90 degrees and one turn at 45 degrees | |||
- Only one turn at 90 degrees | |||
- Only one turn at 180 degrees | |||
||During week 4 at the level where the stomach will form the tube begins to dilate, forming an enlarged lumen. | |||
The dorsal border grows more rapidly than ventral first rotation (of 90 degrees), which establishes the greater curvature of the stomach. | |||
A second rotation (of 90 degrees) occurs on the longitudinal axis establishing the adult orientation of the stomach. Thus there are two rotations the primitive stomach must undertake, the first one at 90 degrees to establish the classic curvature, and the second turn at 90 degrees to correct the anatomical position. | |||
{How many cavities does the mammalian "placental" cloaca have and in what groups of vertebrates is the cloaca only a single cavity?: | |||
|type="()"} | |||
+ Placental mammalian can have two or three seperate orifices for evacuation. Birds, reptiles, amphibians and some other mammals have only one. | |||
- All animals only have one opening called a cloaca for the urinary, digestive and reproductive tracts. | |||
- All animals have two openings, one for the urinary/digestive tract and the other for the reproductive tract. | |||
- All mammals and reptiles have two openings one for the urinary/digestive tract and the other for the reproductive tract. | |||
||All amphibians, birds, reptiles, and a few mammals (monotremes, tenrecs, golden moles, and marsupial moles) have only a cloaca, from which they excrete both urine and feces; this is in contrast to most placental mammals, which have two or three separate orifices for evacuation. In the developing human embryo and placental mammal embryo the hindgut (cloaca) will later be divided into separate urogenital and rectal regions that end at the cloacal membrane. | |||
{There are many different types of lumen abnormalities that can occur in the gastrointestinal tract. Indicate whether the following statement is true or false: | |||
Stenosis is a condition where the lumen is interrupted (or a passage in the body is usually abnormally closed or absent). | |||
|type="()"} | |||
- True | |||
+ False | |||
|| Stenosis is the abnormal narrowing of the lumen, usually caused by a lesion. The interruption of the lumen, where there is congenital absence of a normal opening, is called Atresia. | |||
{What 3 major body cavities does the coelomic cavity form? | |||
|type="()"} | |||
- Endoderm, Mesoderm, Ectoderm | |||
+ Pericardial, pleural, peritoneal | |||
- Cranial cavity, Thoracic cavity, Abdominal cavity | |||
- Foregut, midgut, hindgut | |||
|| The Endoderm (inner layer), Mesoderm (middle layer) and Ectoderm (outer layer) are germ layers that form during embryogenesis. The mesoderm first goes through segmentation to form paraxial, intermediate mesoderm and lateral plate mesoderm. Lateral plate mesoderm segments into somatic and splanchnic mesoderm. The space formed in the middle is called the coelomic cavity. A coelom is a body cavity filled with fluid and is lined with epithelium derived from the mesoderm. The coelomic cavity forms 3 major body cavities: pericardial, pleural and peritoneal. | |||
{Explain the vascular supply of the foregut, midgut and hindgut. | |||
|type="()"} | |||
- The foregut is supplied by the aorta. The midgut is supplied by the celiac artery. The hindgut is supplied by the inferior mesenteric artery. | |||
- The foregut is supplied by branches of the superior mesenteric artery. The midgut and the hindgut are both supplied by the inferior mesenteric artery. | |||
+ The foregut is supplied by branches of the celiac artery. The midgut is supplied by branches of the superior mesenteric artery. The hindgut is supplied by branches of the inferior mesenteric artery. | |||
|| The gastrointestinal tract is separated into 3 portions - the foregut, midgut and hindgut - and all contribute to different parts of the tract. The foregut is the anterior part of the gut and is supplied by the celiac artery. It includes the trachea, lungs, oesophagus and stomach. The midgut lies in the middle and is the portion from which most of the intestines develop, including structures such as the jejunum, ileum, cecum and appendix. It is supplied by the superior mesenteric artery. The posterior part of the gut is called the hindgut and that is supplied by the inferior mesenteric artery. It consists of the half transverse colon, descending colon, rectum and superior part of the anal canal. | |||
{Ladd's Bands are fibrous bands of peritoneal tissue that attach the cecum to the abdominal wall, creating a blockage in the duodenum. In what abnormality is this condition found? | |||
|type="()"} | |||
+ In the malrotation of the intestine | |||
- Intestinal Aganglionosis | |||
- Gastroschisis | |||
- Meckel's Diverticulum | |||
|| Ladd's Bands are a series of bands of peritoneal tissue in the disarrangement of intestines - that is, Intestinal Malrotation. To treat this, the surgeon must untwist the the intestines and cut the Ladd's Bands. | |||
{Which of the following structures does the ectoderm contribute to? | {Which of the following structures does the ectoderm contribute to? |
Latest revision as of 12:46, 2 September 2016
Lab 5: Introduction | Trilaminar Embryo | Early Embryo | Late Embryo | Fetal | Postnatal | Abnormalities | Online Assessment |
Lab 5 Online Assessment
TBA
Lab 4 Assessment
This is not this weeks assessment item, that will be added above.
Have a look at the range and type of questions that some of your peers set for the Quiz assessment. Not all questions are on the GIT.
- How many can you get right?
- How many of the questions are designed with the actual right answer?
- What makes a good quiz question?
- When the answer is revealed, does the explanation provided help your understanding of the concept?
Student Quiz Questions |
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Lab 5: Introduction | Trilaminar Embryo | Early Embryo | Late Embryo | Fetal | Postnatal | Abnormalities | Online Assessment |
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Cite this page: Hill, M.A. (2024, April 25) Embryology ANAT2341 Lab 5 - Online Assessment. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/ANAT2341_Lab_5_-_Online_Assessment
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G