presentation on oogenesis of fertilisation process full details about it u will never find it anywhere else have full details about the ovum formation polar bodies and everything . so explore here
presentation on oogenesis of fertilisation process full details about it u will never find it anywhere else have full details about the ovum formation polar bodies and everything . so explore here
A brief account of different parts of sperm and its constitutions and,ovum parts and different envelops.all things are explained by a simple attractive diagram.
The term implantation is used to describe the attachment of the developing embryo to the endometrium.
After fertilization, the embryo reaches the uterus in the blastocyst stage. Then attached to the wall of the uterus. Though the implantation may occur at any period between the sixth to the tenth day after the fertilization generally it occurs on the seventh day after fertilization.
Here provided contents for learning that what are the male and female gametes. How to they form? And described how to both gametes fused (fertilization)on the molecular basis.
In testis, the immature male germ cell (spermatogonia ) produce sperms by spermatogenesis
The spermatogonia ( sing. Spermatogonium ) present on the inside of seminiferous tubules multiply by mitotic division and increase in numbers
Each spermatogonium is diploid and contains 46 chromosomes
Some of the spermatogonia called primary spermatocytes periodically undergo meiosis.A primary spermatocyte completes the first meiotic division (reduction division) leading to formation of two equal, haploid cells called secondary spermatocyte, which have only 23 chromosomes
The secondary spermatocyte undergo the second meiotic division to produce four equal, haploid spermatids
A brief account of different parts of sperm and its constitutions and,ovum parts and different envelops.all things are explained by a simple attractive diagram.
The term implantation is used to describe the attachment of the developing embryo to the endometrium.
After fertilization, the embryo reaches the uterus in the blastocyst stage. Then attached to the wall of the uterus. Though the implantation may occur at any period between the sixth to the tenth day after the fertilization generally it occurs on the seventh day after fertilization.
Here provided contents for learning that what are the male and female gametes. How to they form? And described how to both gametes fused (fertilization)on the molecular basis.
In testis, the immature male germ cell (spermatogonia ) produce sperms by spermatogenesis
The spermatogonia ( sing. Spermatogonium ) present on the inside of seminiferous tubules multiply by mitotic division and increase in numbers
Each spermatogonium is diploid and contains 46 chromosomes
Some of the spermatogonia called primary spermatocytes periodically undergo meiosis.A primary spermatocyte completes the first meiotic division (reduction division) leading to formation of two equal, haploid cells called secondary spermatocyte, which have only 23 chromosomes
The secondary spermatocyte undergo the second meiotic division to produce four equal, haploid spermatids
Craniofacial growth is a complex and a beautiful phenomenon.
It all begins when a sperm cell fuses with an egg cell, a process called fertilization.
Human fertilization is the union of a human egg and sperm, usually occurring in the ampulla of the fallopian tube. The result of this union is the production of a ’Zygote’ cell, or fertilized egg, initiating prenatal development
Prenatal growth can be divided into 3 main stages:
Germinal stage: From ovulation to implantation(0-2 weeks).
Embryonic stage : 3rd week to 8th week.
Fetal stage: 9th week till birth.
Lecture PowerPoint on embryogenesis. This revolves around the events that occur right from pregnancy to childbirth. Medical students as well as medical professionals will find this lecture invaluable as it gives first information.
This is a slide for complete development in chick ,as chick is a vertebrate so with the help of the development in a chick we can we can understand development in vertebrates .
This topic explains the whole process of growth and development in animal the processes include
Fertilization and incubation
Cleavage
Morula
Blastula
Gastrulation
Notochord And Mesoderm Formation
Neurulation
DEVELOPMENT OF FACE/ Development of face, palate and jawDishikaBhagwani27
• Introduction, General embryology○ Fertilization ○ Formation of germ layers ○ Development of face – •Pharyngeal arches, pouch & clefts ○ Development of nose. development of maxilla & mandible, development of eyes,development of lips & checks Development of head • Development of skull • Development of face.....
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Normal Labour/ Stages of Labour/ Mechanism of LabourWasim Ak
Normal labor is also termed spontaneous labor, defined as the natural physiological process through which the fetus, placenta, and membranes are expelled from the uterus through the birth canal at term (37 to 42 weeks
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
2. Gastrulation
• The most characteristic event occurring
during the third week of gestation is
gastrulation.
• Definition: gastrulation is the process
that establishes all three germ layers
(ectoderm, mesoderm, and endoderm)
in the embryo.
• The endoderm is the innermost layer.
• The ectoderm is the outermost layer.
• The mesoderm is the layer between
these two layers
3.
4. Gastrulation
• Gastrulation begins with
formation of the primitive streak
on the surface of the epiblast
(ectoderm).
• The primitive streak is clearly
visible as a narrow groove with
slightly bulging regions on either
side at the caudal end of the
embryonic disc, it appears in a
15- to 16-day embryo
• The cephalic end of the streak,
the primitive node, consists of a
slightly elevated area surrounding
the small primitive pit.
5. The primitive streak
• The Primitive streak
consists of:
1. primitive groove.
2. Primitive node.
3. Primitive pit.
After primitive streak formation,
the embryo has:
1. Craniocuadal axis.
2. Dorsal &ventral surfaces.
3. Right & left sides.
By the end of 4th week the
primitive streak shows regressive
changes, rapidly shrinks and soon
DISAPPEARS.
6.
7.
8. Mechanism of gastrulation
• Cells of the epiblast migrate toward the primitive
streak. Upon arrival in the region of the streak, they
become flask-shaped, detach from the epiblast, and
slip beneath it. This inward movement is known as
invagination
• Once the cells have invaginated, some displace the
hypoblast, creating the embryonic endoderm, and
others come to lie between the epiblast and newly
created endoderm to form mesoderm. Cells
remaining in the epiblast then form ectoderm.
• Thus, the epiblast, through the process of
gastrulation, is the source of all of the germ layers,
and cells in these layers will give rise to all of the
tissues and organs in the embryo.
9.
10.
11.
12. • As more and more cells move between the epiblast and
hypoblast layers, they begin to spread laterally and cranially.
• Gradually, they migrate beyond the margin of the disc and
establish contact with the extraembryonic mesoderm
covering the yolk sac and amnion.
• In the cephalic direction, they pass on each side of the
prechordal plate.
• The prechordal plate itself forms between the tip of the
notochord and the oropharyngeal membrane and is derived
from some of the first cells that migrate through the node in
the midline and move in a cephalic direction.
• The oropharyngeal membrane at the cranial end of the disc
consists of a small region of tightly adherent ectoderm and
endoderm cells that represents the future opening of the
oral cavity
13.
14.
15. Clinical Correlates
• Gastrulation itself may be disrupted by genetic
abnormalities, toxic insults and maternal diabetes
• In caudal dysgenesis (sirenomelia), insufficient
mesoderm is formed in the caudalmost region of
the embryo. Because this mesoderm contributes
to formation of the lower limbs, urogenital system
(intermediate mesoderm), and lumbosacral
vertebrae, abnormalities in these structures
ensue.
16.
17. Tumors Associated With Gastrulation
• Sometimes, remnants of the primitive streak
persist in the sacrococcygeal region. These
clusters of pluripotent cells proliferate and form
tumors, known as sacrococcygeal teratomas, that
commonly contain tissues derived from all three
germ layers. This is the most common tumor in
newborns, occurring with a frequency of one in
37,000. These tumors may also arise from
primordial germ cells that fail to migrate to the
gonadal ridge