20 Questions
What is the name of the epithelium that lines the urinary system, including the ureter and urinary bladder?
Transitional Epithelium
Which type of epithelium is formed of 2-3 layers of cuboidal cells and is found in the ducts of sweat glands?
Stratified Cuboidal Epithelium
What is the main function of Glandular Epithelium?
To produce secretions
Which type of secretion involves the loss of the apical part of the cell?
Apocrine
What is the characteristic of the superficial cells of Transitional Epithelium?
They are large, rounded, and have a convex free border
Which type of gland is characterized by the presence of ducts and the secretion of hormones?
Mixed gland
What is the main characteristic of epithelial tissue?
Formation mainly of cells with few intercellular substances
Which type of epithelium is responsible for secretion and absorption?
Simple Cubical Epithelium
What is the function of simple squamous epithelium?
To facilitate the flow of fluids and gases
Which of the following is NOT a type of epithelium?
Connective Epithelium
What is the characteristic feature of simple columnar ciliated epithelium?
Presence of cilia
Which type of epithelium is responsible for transmission of nerve impulses?
Neuro-Epithelium
What is the function of myo-epithelium?
Muscular contraction
Which of the following is a type of glandular epithelium?
Thyroid follicle
What is the primary function of Myoepithelium in exocrine glands?
Contraction to help evacuate secretions
What type of epithelial tissue is found in the taste buds of the tongue?
Neuroepithelium
Which type of epithelial tissue is responsible for secretion in the body?
Glandular epithelium
What is the function of Neuroepithelium in the organ of Corti?
Hearing sensation
What is the primary function of Neuroepithelium in the body?
Sensation
What is the name given to the Myoepithelium cells in secretory acini of exocrine glands?
Basket cells
Study Notes
General Characters of Epithelium
- Can be ectodermal, endodermal, or mesodermal in origin
- Formed mainly of cells with few intercellular substances
- Cells rest on basement membrane
- Avascular (no blood, no lymphatic penetration)
- Highly innervated
- Has high power of regeneration
Types of Epithelium
- Surface Epithelium
- Simple Epithelium
- Stratified Epithelium
- Glandular Epithelium
- Neuro-Epithelium
- Myo-Epithelium
Types of Simple Epithelium
- Simple Squamous Epithelium
- Formed of single layer of flat cells with flat nucleus
- Site: lining blood vascular system, serous cavities, lung alveoli, Bowman's capsule, and loop of Henle in kidney
- Function: facilitates flow of fluids, easy movement, gas exchange, filtration, and diffusion
- Simple Cubical Epithelium
- Formed of single layer of cube-like cells with central rounded nucleus
- Site: secretory units, convoluted tubule of kidney, and covering eye lens
- Function: responsible for secretion or reabsorption
- Simple Columnar Epithelium
- Formed of single layer of tall columnar cells with basal oval nuclei
- Site: stomach, intestine, cervical canal of uterus, and convoluted tubule of kidney
- Function: secretion or absorption
- Simple Columnar Ciliated Epithelium
- Formed of single layer of columnar cells with basal oval nuclei and cilia on surface
- Function: helps in secretion or absorption, with additional function of movement of substances due to cilia
Stratified Epithelium
- Stratified Cuboidal Epithelium
- Site: ducts of sweat glands
- Transitional Epithelium
- Site: lines urinary system (ureter and urinary bladder)
- Can change shape according to state of organ
Glandular Epithelium
- Epithelial cells modified for secretion
- Classified by:
- Presence or absence of ducts (exocrine, endocrine, or mixed glands)
- Number of cells (unicellular or multicellular)
- Mode of secretion (merocrine, apocrine, or holocrine)
Neuro-Epithelium
- Specialized epithelial tissue for receiving stimuli
- Consists of hair cells, supporting cells, and basal cells
- Site: taste buds, olfactory epithelium, and organ of Corti
Myo-Epithelium
- Specialized epithelial tissue with contractile cells
- Site: around secretory cells in exocrine glands
- Function: helps secretory cells to squeeze and evacuate secretion
This quiz covers the different types of epithelial tissue, their structures, and sites in the human body. It includes stratified cuboidal epithelium, transitional epithelium, and more.
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