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Questions and Answers
What type of fibers are found in dense connective tissue?
What type of fibers are found in dense connective tissue?
- Muscle fibers
- Nerve fibers
- Collagen fibers (correct)
- Elastic fibers
What is a primary function of dense connective tissue?
What is a primary function of dense connective tissue?
- To produce hormones
- To transmit mechanical forces (correct)
- To provide sensory perception
- To regulate body temperature
What is the main location of the nucleus of fibroblast in dense connective tissue?
What is the main location of the nucleus of fibroblast in dense connective tissue?
- Nerve tissue
- Epidermis of skin
- Muscle tissue
- Dermis of skin (correct)
What is the arrangement of collagen fibers in dense connective tissue?
What is the arrangement of collagen fibers in dense connective tissue?
What is the main component of tendons and many ligaments?
What is the main component of tendons and many ligaments?
What is the scale of the light microscope image shown?
What is the scale of the light microscope image shown?
What is the main function of simple cuboidal epithelium?
What is the main function of simple cuboidal epithelium?
Where can simple cuboidal epithelium be found?
Where can simple cuboidal epithelium be found?
What is the shape of simple cuboidal epithelial cells when viewed from the side?
What is the shape of simple cuboidal epithelial cells when viewed from the side?
What feature do some simple cuboidal epithelial cells have to aid in absorption?
What feature do some simple cuboidal epithelial cells have to aid in absorption?
What is the thickness of the simple cuboidal epithelium layer?
What is the thickness of the simple cuboidal epithelium layer?
What is the primary function of smooth muscle contraction in the digestive tract?
What is the primary function of smooth muscle contraction in the digestive tract?
What is the function of the microvilli in simple cuboidal epithelial cells?
What is the function of the microvilli in simple cuboidal epithelial cells?
What is the role of osteocytes in the bone matrix?
What is the role of osteocytes in the bone matrix?
What is the shape of the cells in simple cuboidal epithelium when viewed in cross-section?
What is the shape of the cells in simple cuboidal epithelium when viewed in cross-section?
What is the function of glial cells in nervous tissue?
What is the function of glial cells in nervous tissue?
What is the result of smooth muscle contraction in arterioles?
What is the result of smooth muscle contraction in arterioles?
What type of microscope is used to observe simple cuboidal epithelium?
What type of microscope is used to observe simple cuboidal epithelium?
What is a characteristic of bone matrix?
What is a characteristic of bone matrix?
What is the function of neurons in nervous tissue?
What is the function of neurons in nervous tissue?
Where can smooth muscle be found?
Where can smooth muscle be found?
What is the function of cytoplasmic extensions in osteocytes?
What is the function of cytoplasmic extensions in osteocytes?
In which type of tissue are reticular fibers the main component?
In which type of tissue are reticular fibers the main component?
What is the primary function of adipose tissue cells?
What is the primary function of adipose tissue cells?
What is the main component of the supportive skeleton in embryonic vertebrates?
What is the main component of the supportive skeleton in embryonic vertebrates?
Which type of tissue is specialized to contract and move the body?
Which type of tissue is specialized to contract and move the body?
What is the main function of lymph tissue?
What is the main function of lymph tissue?
In which layer of tissue is adipose tissue commonly found?
In which layer of tissue is adipose tissue commonly found?
What is the primary function of reticular connective tissue?
What is the primary function of reticular connective tissue?
What replaces cartilage in most vertebrates during development?
What replaces cartilage in most vertebrates during development?
What is a characteristic of cancer cells compared to normal cells?
What is a characteristic of cancer cells compared to normal cells?
Why do surgeons often have difficulty removing all malignant masses?
Why do surgeons often have difficulty removing all malignant masses?
What is a requirement for solid tumors to grow?
What is a requirement for solid tumors to grow?
What is a recommended dietary practice to reduce the risk of cancer?
What is a recommended dietary practice to reduce the risk of cancer?
What can happen to some tumors?
What can happen to some tumors?
Approximately what percentage of cancer deaths are due to solid tumors?
Approximately what percentage of cancer deaths are due to solid tumors?
How do cancer cells interact with surrounding cells?
How do cancer cells interact with surrounding cells?
How many cases of skin cancer are reported in the United States each year?
How many cases of skin cancer are reported in the United States each year?
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Study Notes
Simple Cuboidal Epithelium
- Found in linings of kidney tubules and gland ducts
- Functions include secretion and absorption
- Characterized by a single layer of cells with microvilli for absorption
- Cells appear as short cylinders in cross-section
Dense Connective Tissue
- Found in tendons, ligaments, and dermis of skin
- Functions include support and transmission of mechanical forces
- Composed of collagen fibers, which may be regularly or irregularly arranged
- Example image shows dense connective tissue with collagen fibers and fibroblast nuclei
Other Types of Tissue
- Reticular connective tissue forms a supporting internal framework in organs like the liver, spleen, and lymph nodes
- Adipose tissue stores fat and releases it when needed for cellular respiration
- Cartilage is the supporting skeleton in embryonic stages of vertebrates, but is often replaced by bone during development
- Bone is composed of a rigid matrix and osteocytes that communicate with each other through cytoplasmic extensions
Muscle Tissue
- Smooth muscle occurs in the walls of the digestive tract, uterus, blood vessels, and other internal organs
- Contraction of smooth muscle is necessary for certain functions, such as moving food through the digestive tract
- Contraction of smooth muscle in arterioles raises blood pressure
Nervous Tissue
- Consists of neurons and glial cells
- Neurons are specialized for receiving and transmitting signals
- Glial cells support and nourish neurons, destroy pathogens, and modulate transmission of impulses
Cancer
- Cancer cells divide rapidly and in an uncontrolled way
- Unlike normal cells, cancer cells do not respect boundaries and form tissues in an orderly manner
- Solid tumors require blood vessels to ensure delivery of nourishment and oxygen
- Healthy diet and lifestyle habits can help prevent cancer
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