Podcast
Questions and Answers
What is an essential characteristic of epithelial tissue concerning its vascularity?
What is an essential characteristic of epithelial tissue concerning its vascularity?
- It contains blood vessels within its structure.
- It is highly vascularized.
- It is avascular. (correct)
- It relies on diffusion for nutrient supply.
Which of the following roles is not a function of epithelial tissue?
Which of the following roles is not a function of epithelial tissue?
- Receiving sensory stimuli.
- Lubrication with mucous and serous fluids.
- Filtering substances through the kidney.
- Transporting nutrients via blood vessels. (correct)
Which component distinguishes the apical domain of epithelial cells from the basal domain?
Which component distinguishes the apical domain of epithelial cells from the basal domain?
- Type of membrane proteins.
- Orientation towards the underlying basal lamina.
- Presence of junctional complexes.
- Exposure to the external environment. (correct)
What structural feature is found in the basal lamina of epithelial tissue?
What structural feature is found in the basal lamina of epithelial tissue?
Which of the following is a sensory function of epithelial tissue?
Which of the following is a sensory function of epithelial tissue?
Flashcards
What is Epithelial tissue?
What is Epithelial tissue?
Epithelial tissue is a type of tissue that covers the exterior surfaces of the body, lines internal cavities, and forms the secretory portion of glands. It's also found in sensory organs.
Is epithelial tissue vascular?
Is epithelial tissue vascular?
Epithelial tissue is avascular, meaning it lacks blood vessels. It receives nutrients from the underlying connective tissue.
What are some characteristics of epithelial cells?
What are some characteristics of epithelial cells?
Epithelial cells are arranged in sheets and possess intercellular junctions, creating a strong barrier. They also have distinct surface domains: apical, lateral, and basal.
How does epithelial tissue function in transportation?
How does epithelial tissue function in transportation?
Signup and view all the flashcards
What are other functions of epithelial tissue?
What are other functions of epithelial tissue?
Signup and view all the flashcards
Study Notes
Epithelial Tissue Characteristics
- Epithelial tissue is avascular.
- It covers exterior surfaces of the body.
- It lines internal closed cavities.
- It forms the secretory portion of glands and their ducts.
- It makes up the receptors of certain sensory organs.
Epithelial Cell Characteristics
- Cells are arranged in sheets.
- Cells possess intercellular junctions (junctional complexes).
- Cells display distinct surface domains: apical (free), lateral, and basal.
- Cell properties are determined by the presence of specific membrane proteins.
- Cells rest on an underlying basal lamina, a non-cellular, protein-polysaccharide-rich layer.
Epithelial Tissue Functions
- Transport: Motile cilia on the surface move particles and mucus (e.g., in the trachea and bronchi).
- Sensory Reception: Neuroepithelia (e.g., taste buds of the tongue, retina of the eye) receive sensory stimuli (smell, hearing).
- Secretion/Lubrication: Secretion of mucous and serous fluid provides lubrication.
- Excretion: Epithelial cells filter blood (e.g., urine, sweat)
- Reproductive Functions: Epithelial cells in the ovaries and testes produce and are involved in the processes of sex cells.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Explore the fundamental characteristics and functions of epithelial tissue in the human body. This quiz covers aspects such as cell arrangement, surface domains, and various roles of epithelial tissue in sensation and secretion.
