10 Questions
What is the primary function of epithelium tissue?
To cover the external and internal surfaces of the body
Which primary tissue type forms the external and internal surface of the body?
Epithelium tissue
What is the role of the basement membrane in epithelial tissue?
To attach epithelium to the connective tissue
In what form does the epithelial tissue exist according to its structure and function?
As a sheet of contiguous cells covering internal surfaces
Which type of tissue consists largely or entirely of closed packet cells with little or no intercellular material between adjacent cells?
Epithelium tissue
From which embryonic germ layer do the liver, pancreas, and lining of the respiratory and gastro-intestinal tract originate?
Endoderm
Which germ layer gives rise to the oral and nasal mucosa, cornea, and skin glands?
Ectoderm
What embryonic origin does the mammary glands have?
Ectoderm
From which germ layer do the uriniferous tubules of the kidney originate?
Mesoderm
Which germ layer gives rise to the endothelial lining of the circulating system and the mesothelium of the body cavities?
Mesoderm
Study Notes
Epithelial Tissue
- The primary function of epithelial tissue is to form the external and internal surface of the body.
Structure and Function
- Epithelial tissue exists in two forms according to its structure and function: simple (single layer) and stratified (multiple layers).
Basement Membrane
- The basement membrane plays a crucial role in epithelial tissue, serving as a thin, flexible layer that separates epithelial cells from underlying connective tissue.
Tissue Types
- Epithelial tissue is characterized by closed packet cells with little or no intercellular material between adjacent cells.
Embryonic Origin
- The liver, pancreas, and lining of the respiratory and gastrointestinal tract originate from the endodermal embryonic germ layer.
- The oral and nasal mucosa, cornea, and skin glands originate from the ectodermal embryonic germ layer.
- The mammary glands originate from the ectodermal embryonic germ layer.
- The uriniferous tubules of the kidney originate from the mesodermal embryonic germ layer.
- The endothelial lining of the circulating system and the mesothelium of the body cavities originate from the mesodermal embryonic germ layer.
Test your knowledge of the four primary tissues in the human body and their functions. Explore how these tissues work together to form organs and systems.
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