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Questions and Answers
Select the correct statement regarding epithelia.
Select the correct statement regarding epithelia.
- Cuboidal epithelia are never found in glands.
- Stratified epithelia are present where protection from abrasion is important. (correct)
- Simple squamous epithelium is the only type of epithelial tissue.
- All epithelia are vascularized.
Which of the following is true about the mode of secretion of exocrine glands?
Which of the following is true about the mode of secretion of exocrine glands?
- Apocrine glands are always the most common type of gland.
- Merocrine glands are not altered by the secretory process. (correct)
- Holocrine glands secrete their contents without losing cellular material.
- Merocrine glands are altered by the secretory process.
Which of the following is true about epithelia?
Which of the following is true about epithelia?
- Endothelium provides a slick surface lining all hollow cardiovascular organs. (correct)
- Simple columnar epithelium is always ciliated.
- Epithelia are non-vascular tissues.
- Cuboidal epithelium is primarily involved in absorption only.
Inability to absorb digested nutrients and secrete mucus might indicate a disorder in which epithelial tissue?
Inability to absorb digested nutrients and secrete mucus might indicate a disorder in which epithelial tissue?
Which epithelia forms the walls of the air sacs across which gas exchange occurs in the lungs?
Which epithelia forms the walls of the air sacs across which gas exchange occurs in the lungs?
A ciliated version of pseudostratified columnar epithelium containing mucus-secreting goblet cells ________.
A ciliated version of pseudostratified columnar epithelium containing mucus-secreting goblet cells ________.
Select the correct statement regarding adipose tissue.
Select the correct statement regarding adipose tissue.
Which of the following statements is true of connective tissue?
Which of the following statements is true of connective tissue?
The shape of the external ear is maintained by ________.
The shape of the external ear is maintained by ________.
The fiber type that gives connective tissue great tensile strength is ________.
The fiber type that gives connective tissue great tensile strength is ________.
Connective tissue extracellular matrix is composed of ________.
Connective tissue extracellular matrix is composed of ________.
Which of the following is NOT found in cartilage but is found in bone?
Which of the following is NOT found in cartilage but is found in bone?
Which is true concerning muscle tissue?
Which is true concerning muscle tissue?
Select the correct statement regarding tissue repair.
Select the correct statement regarding tissue repair.
The first step in tissue repair involves ________.
The first step in tissue repair involves ________.
Smooth muscle
Smooth muscle
Skeletal muscle
Skeletal muscle
Cardiac muscle
Cardiac muscle
Areolar connective tissue
Areolar connective tissue
Tendons and ligaments
Tendons and ligaments
The salivary glands are a good example of a ________ exocrine gland.
The salivary glands are a good example of a ________ exocrine gland.
Mesenchymal cells are most commonly found in ________ connective tissue.
Mesenchymal cells are most commonly found in ________ connective tissue.
Chondroblasts ________.
Chondroblasts ________.
Which tissue type is formed by many cells joining together, which are multinucleated?
Which tissue type is formed by many cells joining together, which are multinucleated?
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Study Notes
Epithelia
- Stratified epithelia provide protection from abrasion, indicating their role in areas subject to wear and tear.
- Endothelium serves as a smooth lining for hollow cardiovascular organs, facilitating blood flow.
- Simple columnar epithelium is essential for nutrient absorption and mucus secretion; disorders here may lead to nutrient malabsorption.
- Simple squamous epithelium forms the walls of alveoli in lungs, allowing for efficient gas exchange.
- Ciliated pseudostratified columnar epithelium, featuring goblet cells, lines the respiratory tract, aiding in mucus clearance.
Connective Tissue
- Adipose tissue primarily stores nutrients, highlighting its energy reserve function.
- Collagen fibers impart high tensile strength to connective tissue, crucial for structural integrity.
- Elastic cartilage maintains the shape of structures like the external ear, providing flexibility.
- Collagen fibers are the primary components responsible for tensile strength in connective tissues.
- Connective tissue's extracellular matrix consists of fibers and ground substance, influencing its properties.
- Bone contains blood vessels, while cartilage does not, distinguishing these two tissue types.
Muscle Tissue
- Muscle tissue is characterized by being highly cellular and well-vascularized, supporting its functions of contraction and movement.
- Smooth muscle exhibits moderate regenerative ability, allowing it to heal from injury.
- Skeletal muscle has a weak regenerative ability due to its structure and function.
- Cardiac muscle has virtually no capability for functional regeneration after injury.
Tissue Repair
- Inflammation is the initial response in tissue repair, causing capillaries to dilate and increase permeability.
- The first step in tissue repair is inflammation, setting the stage for healing processes.
Regeneration
- Areolar connective tissue regenerates extremely well, making it resilient after injury.
- Tendons and ligaments possess moderate regenerative abilities, reflecting their structured composition.
Glandular Tissue
- Salivary glands exemplify compound tubuloalveolar exocrine glands, demonstrating the complexity of gland structure.
- Mesenchymal cells are primarily found in embryonic connective tissue, implicated in development and repair.
- Chondroblasts reside within cartilage, where they divide and secrete new matrix, contributing to growth and healing.
Skeletal Muscle
- Formed by many cells fused together, skeletal muscle fibers are multinucleated, enabling strong contractions and force generation.
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