30 Questions
During which day of gestation do progenitor heart cells migrate through the primitive streak on?
16
What is being established for the entire embryo around the same time that patterning of heart cells occurs?
Left-right sidedness
What is the term for the group of cells that will give rise to the right ventricle and outflow tract?
Secondary heart field
What is the name of the structure that will eventually form the conus cordis and truncus arteriosus?
Conotruncal region
What is the term for the layer of cells that will give rise to the heart and other mesodermal derivatives?
Splanchnic mesoderm
What is the name of the structure that is formed from the fusion of the lateral plate mesoderm?
Septum transversum
What develops into the dorsal aortae?
Pericardial blood islands
What are the two heart fields that constitute the cardiac progenitor cells?
Primary dorsal heart field and secondary pharyngeal heart field
What is the term for the development of blood and blood vessels?
Angiogenesis
What is the earliest stage at which the heart components can be identified?
Day 18 of embryonic development
What is the term for the veins that return blood to the heart from the anterior, common, and posterior regions of the embryo?
Cardinal veins
What is the name of the structure that receives blood from the vitelline and umbilical veins?
Sinus venosus
What is the region where cardiac myoblasts and blood islands are formed?
Cardiogenic mesoderm
What process leads to the formation of blood vessels from blood islands?
Vasculogenesis
What is the cavity that develops into the pericardial cavity?
Intraembryonic cavity
What is the function of the PHF?
Induction of cardiac myoblasts and blood islands
What is the shape of the endothelial-lined tube formed from blood islands?
Horseshoe-shaped
What is the role of the underlying pharyngeal endoderm?
Induction of cardiac myoblasts and blood islands
What is the result of the growth of the brain and cephalic folding of the embryo?
The heart and pericardial cavity move first to the cervical region and finally to the thorax.
What forms the muscular wall of the heart?
Myocardium
What is derived from the surface of the sinus venosus?
Epicardium
What is the result of the merging of the caudal regions of the heart tube?
Formation of the medial umbilical ligaments
What is the name of the sac that is formed by the separation of the endocarcells from the mesoderm?
Aortic sac
What is the name of the tube that forms the heart?
Heart tube
What is the location of the heart where it receives venous drainage?
Caudal pole
What is the fate of the central part of the horseshoe-shaped tube?
It forms the future outflow tract
What is the external layer of the embryonic heart tube?
Epicardium
Where does the heart tube eventually come to lie?
Ventral to the foregut
What is the origin of the pericardial cavity?
From the splanchnic mesoderm
What is the function of the myocardium?
It secretes a layer of extracellular matrix
Discover how heart cells migrate and develop during embryogenesis. Learn about the primitive streak, mesoderm, and the formation of the heart ventricle. Test your knowledge on the patterning of heart cells and their contribution to the overall embryonic development.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
