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Questions and Answers
Which surface of the cell is exposed to an internal or external environment?
Which surface of the cell is exposed to an internal or external environment?
apical
Keratin is a protein that is typically found in which tissue type?
Keratin is a protein that is typically found in which tissue type?
epithelial
Which tissue type lines the heart and blood vessels?
Which tissue type lines the heart and blood vessels?
simple squamous epithelium
Which epithelial cells, found lining the nasal cavities and the trachea, typically possess cilia?
Which epithelial cells, found lining the nasal cavities and the trachea, typically possess cilia?
Which method(s) of secretion is/are involved in milk production in the mammary glands?
Which method(s) of secretion is/are involved in milk production in the mammary glands?
Why would areolar tissue be considered the ideal type for connective tissue proper?
Why would areolar tissue be considered the ideal type for connective tissue proper?
Which tissue type, found within the knee joint and between the pubic bones of the pelvis, resists compression and limits relative movement?
Which tissue type, found within the knee joint and between the pubic bones of the pelvis, resists compression and limits relative movement?
Which of the following features are significantly different in cartilage compared to bone?
Which of the following features are significantly different in cartilage compared to bone?
Neurons have a very limited ability to divide after injury because most neurons lack which organelle(s)?
Neurons have a very limited ability to divide after injury because most neurons lack which organelle(s)?
In response to tissue injury, which cells release chemicals that stimulate nerve endings, producing the sensation of pain?
In response to tissue injury, which cells release chemicals that stimulate nerve endings, producing the sensation of pain?
The pancreas is an example of which glandular structure?
The pancreas is an example of which glandular structure?
What is a tissue?
What is a tissue?
Transmembrane proteins that bind to each other and to extracellular materials are known as?
Transmembrane proteins that bind to each other and to extracellular materials are known as?
Identify the various types of epithelial intercellular connections.
Identify the various types of epithelial intercellular connections.
Why do the pharynx, esophagus, anus, and vagina have a similar epithelial organization?
Why do the pharynx, esophagus, anus, and vagina have a similar epithelial organization?
What functions are associated with a simple cuboidal epithelium and a transitional epithelium?
What functions are associated with a simple cuboidal epithelium and a transitional epithelium?
Simple cuboidal epithelium is found?
Simple cuboidal epithelium is found?
Describe the appearance of simple columnar epithelial cells in a sectional view.
Describe the appearance of simple columnar epithelial cells in a sectional view.
What three characteristics are used to describe multicellular exocrine glands?
What three characteristics are used to describe multicellular exocrine glands?
Identify the three basic components of connective tissue.
Identify the three basic components of connective tissue.
All of the following are connective tissue proper, except?
All of the following are connective tissue proper, except?
Which connective tissue type is found in the walls of large blood vessels, in ligaments supporting transitional epithelia, and in the erectile tissues of the penis?
Which connective tissue type is found in the walls of large blood vessels, in ligaments supporting transitional epithelia, and in the erectile tissues of the penis?
What type of cells makes up almost half the volume of blood?
What type of cells makes up almost half the volume of blood?
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Study Notes
Epithelial Tissue
- Apical Surface: The side of the cell that faces an internal or external environment.
- Keratin: A protein commonly found in epithelial tissue, providing protection and water resistance.
- Simple Squamous Epithelium: Lines the heart and blood vessels, facilitating diffusion and filtration.
- Pseudostratified Columnar Epithelium: Lines the nasal cavities and trachea; characterized by cilia that help in trapping and moving particles.
Glandular Structure
- Milk Production: Involves both merocrine and apocrine secretion methods in mammary glands.
- Exocrine Glands: Differentiated into simple and compound structures based on duct and secretory area organization, with the pancreas being a compound tubuloalveolar gland.
- Characteristics of Multicellular Exocrine Glands: Assessed by the structure of the duct, shape of the secretory area, and duct-secretory area relationships.
Connective Tissue
- Areolar Tissue: Considered ideal connective tissue proper due to the presence of all cell types found in other connective tissues.
- Fibrocartilage: Provides resistance to compression and restricts movement, found in the knee joint and pubic bones.
- Elastic Connective Tissue: Found in large blood vessel walls, supports transitional epithelia, and in erectile tissues.
Cellular Components
- Neurons: Have limited regenerative ability post-injury due to the absence of centrioles.
- Mast Cells: Release chemicals that trigger pain sensations in response to tissue injury.
Intercellular Connections
- Types: Include tight junctions, adhesion belts, gap junctions, and desmosomes, maintaining tissue integrity and communication.
Specialized Functions
- Simple Cuboidal Epithelium: Primarily involved in secretion and absorption; located in kidney tubules.
- Transitional Epithelium: Specialized for stretching, found in areas that undergo distension such as the bladder.
Blood Composition
- Red Blood Cells: Comprise almost half of blood volume, essential for oxygen transport.
Membranes
- Art-labeling Activities: Used for visual identification and understanding of tissue organization and structure.
Epithelial Organization
- Common Structure in Specific Regions: The pharynx, esophagus, anus, and vagina exhibit similar epithelial features due to exposure to physical stress and abrasion.
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