This is a PowerPoint presentation undertaken by Fasama H. Kollie and Antoinette H. Wright. This presentation gives a clue about how the muscular system develop during embryonic development.
Development of the musculoskeletal systemSahar Hafeez
In this presentation you will learn about the development of Musculoskeletal system, one of the major systems of human body. The presentation briefly highlights upon the process of bone formation during the intrauterine life. It also describes the origin of two main groups of muscles in the body, the Extensors & Flexors and their motor innervation pattern.
Development of the musculoskeletal systemSahar Hafeez
In this presentation development of the Musculoskeletal system which is one of the largest systems of human body has been described. The viewer would be able to learn about the concept of Intrauterine bone formation in general and the role of embryonic connective tissue. Also, the origin of the two muscle groups of the , Extensors & Flexors along with their motor innervation pattern has been described in this presentation.
Development of the musculoskeletal systemSahar Hafeez
In this presentation you will learn about the development of Musculoskeletal system, one of the major systems of human body. The presentation briefly highlights upon the process of bone formation during the intrauterine life. It also describes the origin of two main groups of muscles in the body, the Extensors & Flexors and their motor innervation pattern.
Development of the musculoskeletal systemSahar Hafeez
In this presentation development of the Musculoskeletal system which is one of the largest systems of human body has been described. The viewer would be able to learn about the concept of Intrauterine bone formation in general and the role of embryonic connective tissue. Also, the origin of the two muscle groups of the , Extensors & Flexors along with their motor innervation pattern has been described in this presentation.
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
Thinking of getting a dog? Be aware that breeds like Pit Bulls, Rottweilers, and German Shepherds can be loyal and dangerous. Proper training and socialization are crucial to preventing aggressive behaviors. Ensure safety by understanding their needs and always supervising interactions. Stay safe, and enjoy your furry friends!
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.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
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at Integral University, Lucknow, 06.06.2024
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Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
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Delivering Micro-Credentials in Technical and Vocational Education and TrainingAG2 Design
Explore how micro-credentials are transforming Technical and Vocational Education and Training (TVET) with this comprehensive slide deck. Discover what micro-credentials are, their importance in TVET, the advantages they offer, and the insights from industry experts. Additionally, learn about the top software applications available for creating and managing micro-credentials. This presentation also includes valuable resources and a discussion on the future of these specialised certifications.
For more detailed information on delivering micro-credentials in TVET, visit this https://tvettrainer.com/delivering-micro-credentials-in-tvet/
Pride Month Slides 2024 David Douglas School District
Development of the Muscular System (Human Embryology, Zoo 404)
1.
2. The formation of the muscular system begins
about 4Th week of embryonic development.
The beginning cells are called Myoblasts.
Most of our muscles develops from the
mesodermal germ layer
Except some smooth muscle tissues (pupil,
sweat glands and mammary gland
differentiate from ectoderm)
3. The muscular system consist of;
1. Skeletal musculature
2. Cardiac musculature
3. Smooth musculature
Skeletal muscles are derived from paraxial
mesoderm
This forms;
Somites from the occipital to the
sacral regions
Somitomeres in the head
4. Smooth muscles differentiate from
splanchnic mesoderm surrounding the gut
and its derivatives.
Cardiac muscles are derived from
splanchnic mesoderm surrounding the
heart tube
5. Musculature of the head, axial skeleton and
body wall are formed by Somites and
somitomeres
From the occipital region caudally, somites form and
differentiate into;
►Sclerotome
►Dermatome
►Two muscle-forming regions
One in the dorsolateral region of the somite
provides progenitor cells for limb and body
wall musculature (hypomeric)
The other in the dorsalmedial region forms the
myotome (epimeric musculature)
6.
7. Precursor cells, the myoblasts, fuse and
form long, multinucleated muscle fibers
Myofibrils soon appear in the cytoplasm, and
by the end of the third month, cross-
striations appear in skeletal muscle
A similar process occurs in the seven
somitomeres in the head region rostral to the
occipital somites
8. Patterns of muscle formation are controlled by
connective tissue into which myoblasts
migrate
In the head region these connective tissues are
derived from neural crest cells;
in cervical and occipital regions they
differentiate from somatic mesoderm; and
In the body wall and limbs they originate from
somatic mesoderm
9. By the end of the 5th week prospective muscle
cells are collected into two parts:
Epimere (small dorsal portion) – innervated by the
dorsal primary ramus
Hypomere (larger ventral part) – innervated by the
ventral primary ramus
Myoblasts of the epimeres form the extensor
muscles of the vertebral column, and those of
the hypomeres give rise to muscles of the
limbs and body wall
11. Myoblasts from cervical hypomeres form the
scalene, geniohyoid, and prevertebral muscles.
Those from thoracic segments split into three
layers, which in the thorax are represented by;
External Intercostal
Internal Intercostal
Innermost Intercostal
In the abdominal wall these three muscle layers
consist of the external oblique, the internal
oblique, and the transversus abdominis
muscles.
12. Myoblasts from the hypoblast of lumbar
segments form the quadrates lumborum
muscle
Those from sacral and coccygeal regions form
the pelvic diaphragm and striated muscles of
the anus.
A ventral longitudinal column arises at the
ventral tip of the hypomeres.
This column is represented by the rectus
abdominis muscle and the infrahyoid
musculature
13. All voluntary muscles of the head region are
derived from paraxial mesoderm (somitomeres
and somites);
Including muscle of the tongue, eye (except that
of the iris, which is derived from optic cup
ectoderm), and that associated with the
pharyngeal (visceral) arches.
Patterns of muscle formation in the head are
directed by connective tissue elements (Neural
crest cells)
14. Connective tissue dictates the pattern of
muscle formation in the limb
Derived from the somatic mesoderm
The mesenchyme is derived from
dorsolateral cells of the somites that migrate
into the limb bud to form the muscles
With elongation of the limb buds, the muscle
tissue splits into flexor and extensor
components
15. The upper limb buds lie
opposite the lower five
cervical and upper two
thoracic segments, and
the lower limb buds lie
opposite the lower four
lumbar and upper two
sacral segments
16. As soon as the buds form, ventral primary rami penetrate
into the mesenchyme.
At first each ventral ramus enters with isolated dorsal and
ventral branches, but soon these branches unite to form
large dorsal and ventral nerves
The radial nerve is formed by a combination of the dorsal
segmental branches
The ulnar and median nerves are formed by a
combination of the ventral branches.
Spinal nerves not only play an important role in
differentiation and motor innervation of the limb
musculature, but also provide sensory innervations for the
dermatomes.
17. Develops from splanchnic mesoderm surrounding the
endothelia heart tube
Myoblasts adhere to one another by special attachments
that later develop into intercalated discs.
Myofibrils develop as in skeletal muscle, but myoblasts do
not fuse
During later development, a few special bundles of muscle
cells with irregularly distributed myofibrils become visible
These bundles, the Purkinje fibers, form the conducting
system of the heart.
18. Derived from splanchnic mesoderm
surrounding the endoderm of the gut and its
derivatives
ciliary muscle and sphincter papillae muscles
of the eye are derived from neural crest
ectoderm
Vascular smooth muscle differentiates from
local mesoderm adjacent to vascular
endothelium
19. Most muscles arise from the mesoderm in the 3rd week of embryonic
development
Skeletal muscles are derived from paraxial mesoderm,
Progenitor cells for muscle tissues are derived from the dorsolateral and
dorsomedial portions of the somites.
Cells in the dorsolateral portion migrate to form hypomeric muscle; cells
in the dorsomedial portion migrate ventral to the dermatome to form
the myotome, and ultimately form epimeric musculature.
By the 5th week muscle precursor cells are divided into a small dorsal
portion, the epimere, innervated by a dorsal primary ramus, and a larger
ventral portion, the hypomere, innervated by a ventral primary ramus