Lesson 1-AsexualInPlants
... – These organs have a store of food. Shoots grow from these organs bearing leaves and flowers. In the process, food is withdrawn from the underground storage organ which shrivels. As the leaves manufacture food, food is transported to the buds which gradually swell to become new underground stems. ...
... – These organs have a store of food. Shoots grow from these organs bearing leaves and flowers. In the process, food is withdrawn from the underground storage organ which shrivels. As the leaves manufacture food, food is transported to the buds which gradually swell to become new underground stems. ...
340Lecture06 - Dr. Stuart Sumida
... Determination comes fairly quickly in Amphioxus. Recall that as a deuterostome, cleavage is radial and initially indeterminate. Determination does come fairly quickly however. In urochordates it can be as early as the 8cell stage. Endoderm lies near the bottom of the egg, which is heavier because al ...
... Determination comes fairly quickly in Amphioxus. Recall that as a deuterostome, cleavage is radial and initially indeterminate. Determination does come fairly quickly however. In urochordates it can be as early as the 8cell stage. Endoderm lies near the bottom of the egg, which is heavier because al ...
Introduction to Embryology of Chordata
... Determination comes fairly quickly in Amphioxus. Recall that as a deuterostome, cleavage is radial and initially indeterminate. Determination does come fairly quickly however. In urochordates it can be as early as the 8cell stage. Endoderm lies near the bottom of the egg, which is heavier because al ...
... Determination comes fairly quickly in Amphioxus. Recall that as a deuterostome, cleavage is radial and initially indeterminate. Determination does come fairly quickly however. In urochordates it can be as early as the 8cell stage. Endoderm lies near the bottom of the egg, which is heavier because al ...
Lecture 15 Dev Bio JS
... Conclusion: In the early gastrula the transplanted tissue undergoes conditional development because the ultimate fate depends on the location in the embryo. In the late gastrula the transplanted tissue exhibits autonomous development independent of their final location after transplantation, i.e. t ...
... Conclusion: In the early gastrula the transplanted tissue undergoes conditional development because the ultimate fate depends on the location in the embryo. In the late gastrula the transplanted tissue exhibits autonomous development independent of their final location after transplantation, i.e. t ...
13.Axial Skeleton
... During fetal life the flat bones of the calvaria are separated by dense connective tissue membranes, that form the sutures ...
... During fetal life the flat bones of the calvaria are separated by dense connective tissue membranes, that form the sutures ...
Chapter 10 Notes (Sections 1-4)
... Internal regulators are proteins that respond to events inside a cell. They allow the cell cycle to proceed only once certain processes have happened inside the cell. External regulators are proteins that respond to events outside the cell. They direct cells to speed up or slow down the cell cycle. ...
... Internal regulators are proteins that respond to events inside a cell. They allow the cell cycle to proceed only once certain processes have happened inside the cell. External regulators are proteins that respond to events outside the cell. They direct cells to speed up or slow down the cell cycle. ...
Lesson Overview
... Internal regulators are proteins that respond to events inside a cell. They allow the cell cycle to proceed only once certain processes have happened inside the cell. External regulators are proteins that respond to events outside the cell. They direct cells to speed up or slow down the cell cycle. ...
... Internal regulators are proteins that respond to events inside a cell. They allow the cell cycle to proceed only once certain processes have happened inside the cell. External regulators are proteins that respond to events outside the cell. They direct cells to speed up or slow down the cell cycle. ...
Lec 06 - Development of e
... Primary explant → callus → meristemoid → organ primordium Direct organogenesis is accomplished without an intervening proliferate callus stage: Primary explant → meristemoid → organ primordium In vitro plant tissues may produce many types of primordia (adventitious buds and organs) including those t ...
... Primary explant → callus → meristemoid → organ primordium Direct organogenesis is accomplished without an intervening proliferate callus stage: Primary explant → meristemoid → organ primordium In vitro plant tissues may produce many types of primordia (adventitious buds and organs) including those t ...
2nd week of developement
... cellular debris from eroded uterine glands. The fluid in the lacunar spaces-embryotroph (Greek, trophe, nourishment)-passes to the embryonic disc by diffusion and provides nutritive material to the embryo. ...
... cellular debris from eroded uterine glands. The fluid in the lacunar spaces-embryotroph (Greek, trophe, nourishment)-passes to the embryonic disc by diffusion and provides nutritive material to the embryo. ...
Embryology 8
... normal menstrual bleeding and, therefore, cause inaccuracy in determining the expected delivery date(some pregnant ladies have in the 28th day of menstrual cycle (the thirteenth day of pregnancy)have bleeding as the menstrual cycle caused by the bulky amount of blood in lacunar spaces that results i ...
... normal menstrual bleeding and, therefore, cause inaccuracy in determining the expected delivery date(some pregnant ladies have in the 28th day of menstrual cycle (the thirteenth day of pregnancy)have bleeding as the menstrual cycle caused by the bulky amount of blood in lacunar spaces that results i ...
DEVELOPMENT OF MESODERM,
... At the end of lecture students should be able to know, What is gastrulation. Development of mesoderm. Somitogenesis. Formation of cartilage. ...
... At the end of lecture students should be able to know, What is gastrulation. Development of mesoderm. Somitogenesis. Formation of cartilage. ...
Development
... Since sperm production continues throughout adult life and at the peak, 100-200 million sperm can be produced daily, the spermatogonia are constantly renewed. The first step in spermatogenesis is a mitotic division of the spermatogonium. One of the daughter cells remains, to replace the original spe ...
... Since sperm production continues throughout adult life and at the peak, 100-200 million sperm can be produced daily, the spermatogonia are constantly renewed. The first step in spermatogenesis is a mitotic division of the spermatogonium. One of the daughter cells remains, to replace the original spe ...
Slides - Workforce Development in Stem Cell Research
... References Lecture notes (hyperlink) Activity notes (hyperlink) More links… ...
... References Lecture notes (hyperlink) Activity notes (hyperlink) More links… ...
uterine tube
... thecal cells, is thrown into deep folds as the follicle collapses and is transformed into the corpus luteum (yellow body), or luteal gland (janqueira). Cells of the granulosa and theca interna layers then differentiate into granulosa luteal and theca luteal cells in the process called luteinizatio ...
... thecal cells, is thrown into deep folds as the follicle collapses and is transformed into the corpus luteum (yellow body), or luteal gland (janqueira). Cells of the granulosa and theca interna layers then differentiate into granulosa luteal and theca luteal cells in the process called luteinizatio ...
Chapter 8: Embryonic Induction
... Many other cell types originate as a result of inductive interaction throughout development of the organism; this is secondary induction. Inductive interactions have been classified as either instructive or permissive. In an instructive interaction, the inducing tissue apparently gives precise infor ...
... Many other cell types originate as a result of inductive interaction throughout development of the organism; this is secondary induction. Inductive interactions have been classified as either instructive or permissive. In an instructive interaction, the inducing tissue apparently gives precise infor ...
Meristems
... have been proposed. Meristems based on stage of development: - Promeristem or Primordial Meristem: Group of cells (limited no.) from the embryo found in region where new organ or parts of organ is initiated (stem &root), it give rise to all primary meristems. Plant Anatomy 254 lec no. 8 Rajaa Abueid ...
... have been proposed. Meristems based on stage of development: - Promeristem or Primordial Meristem: Group of cells (limited no.) from the embryo found in region where new organ or parts of organ is initiated (stem &root), it give rise to all primary meristems. Plant Anatomy 254 lec no. 8 Rajaa Abueid ...
12-AXIAL SKEL(1)..
... migrate to different locations and are able to differentiate into : Fibroblasts, Chondroblasts and Osteoblasts. ...
... migrate to different locations and are able to differentiate into : Fibroblasts, Chondroblasts and Osteoblasts. ...
Karl Ernst von Baer in Italy (1845-46)
... noticed that embryonic structures grow not only by addition of molecules at the surface, but in three dimensions, as if they followed an "internal mould". Development, then, should occur by aggregation as well as by inner modification. ...
... noticed that embryonic structures grow not only by addition of molecules at the surface, but in three dimensions, as if they followed an "internal mould". Development, then, should occur by aggregation as well as by inner modification. ...
Morphogenesis and Differentiation During Animal Development
... morphogenesis. In 1910, Alexander Gurwitsch presented the theory of the morphogenetic field, which posited that cells developed into specific body regions in response to specific chemicals secreted by the embryo. By the 1920s, scientists Hans Spemann and Hilde Mangold conducted a simple transplantat ...
... morphogenesis. In 1910, Alexander Gurwitsch presented the theory of the morphogenetic field, which posited that cells developed into specific body regions in response to specific chemicals secreted by the embryo. By the 1920s, scientists Hans Spemann and Hilde Mangold conducted a simple transplantat ...
chapter 47 - Biolympiads
... In frogs, the first two cleavages are vertical and result in four blastomeres of equal size, each extending from the animal pole to the vegetal pole. The third division is equatorial (horizontal), producing an eight-celled embryo with two tiers of four cells. ○ The unequal division of yolk displaces ...
... In frogs, the first two cleavages are vertical and result in four blastomeres of equal size, each extending from the animal pole to the vegetal pole. The third division is equatorial (horizontal), producing an eight-celled embryo with two tiers of four cells. ○ The unequal division of yolk displaces ...
Class Notes
... In frogs, the first two cleavages are vertical and result in four blastomeres of equal size, each extending from the animal pole to the vegetal pole. The third division is equatorial (horizontal), producing an eight-celled embryo with two tiers of four cells. ○ The unequal division of yolk displaces ...
... In frogs, the first two cleavages are vertical and result in four blastomeres of equal size, each extending from the animal pole to the vegetal pole. The third division is equatorial (horizontal), producing an eight-celled embryo with two tiers of four cells. ○ The unequal division of yolk displaces ...
Chapter 8 Principles of Development
... enough yolk support growth to juvenile stages (reptiles & birds) telolecithal egg indirect development: larval stages between egg & adult isolecithal/mesolecithal eggs Development single cell—differentiate into different body parts commonality among 32 multicellular phyla ...
... enough yolk support growth to juvenile stages (reptiles & birds) telolecithal egg indirect development: larval stages between egg & adult isolecithal/mesolecithal eggs Development single cell—differentiate into different body parts commonality among 32 multicellular phyla ...
Chapter Overviews
... 4. Not true. There are many examples of hormonal crossover between males and females. In females, the granulosa cells of the ovarian follicle produce estrogen from its precursor molecule, testosterone. Androgens in the ovary are involved in the atresia of follicles. In the pregnant female, the plac ...
... 4. Not true. There are many examples of hormonal crossover between males and females. In females, the granulosa cells of the ovarian follicle produce estrogen from its precursor molecule, testosterone. Androgens in the ovary are involved in the atresia of follicles. In the pregnant female, the plac ...
2nd week of Development
... Outer cell mass :also differentiate into two layers 1. Layer of mononucleated cells called cytotrophblast. These cells are active mitotically 2. Layer of multinucleated zone without distinct cell bounderies called syncytotrophblast or syncitium Extraembryonic structures • The embryonic disc gives ri ...
... Outer cell mass :also differentiate into two layers 1. Layer of mononucleated cells called cytotrophblast. These cells are active mitotically 2. Layer of multinucleated zone without distinct cell bounderies called syncytotrophblast or syncitium Extraembryonic structures • The embryonic disc gives ri ...