Simple cuboidal epithelium m. Simple columnar epithelium n. Pseudostratified columnar epithelium o. Stratified squamous epithelium p. Stratified cuboidal epithelium q. Stratified columnar epithelium r. Transitional epithelium s. Glandular epithelium i. Lining of intestines ii. Lining of ducts of mammary glands iii. Lining of urinary bladder iv. Salivary glands v. Air sacs of lungs vi. Respiratory passages vii. Ductus deferens viii. Lining of kidney tubules ix. Outer layer of skin 6. Distinguish between exocrine and endocrine glands. (p. 01) * Exocrine-Glands that secrete their products into ducts that open onto surfaces, such as the skin or the lining of the digestive tract. * Endocrine- glands that secrete their products into tissue fluid or blood. 7. A gland that secretes substances out of cells by exocytosis is a(n) ________. (p. 101) t. Merocrine gland u. Apocrine gland v. Holocrine gland 8. Define extracellular matrix. (p. 102) * Composed of protein fibers, and a ground substance consisting of nonfibrous protein, other molecules, and fluid. The consistency varies from fluid to semisolid to solid. 9.
Describe three major types of connective tissue cells. (p. 102) * Fixed cells- reside in the tissue for an extended period of time * Wandering cells- move through and appear in tissues temporarily, usually in response to injury or infection * Fibroblasts- large star shaped cells that produce fibers by secreting proteins into the extracellular matrix of connective tissues. 10. Distinguish between collagen and elastin. (p. 104) * Collagen- long, parallel bundles that are flexible but only slightly elastic. They have great strength in resisting a pulling force.
The Essay on Tissue Types Body Tissues Cells
Biology Assignment 1. Tissue types and their properties! Body tissues! The four core types of tissues in the body are; epithelial, connective, muscle and nervous. Each is designed for specific functions. Epithelial Tissues! Epithelial tissues are spread out all over the body. They cover all surfaces and also line body cavities and hollow organs. These tissues are also the major tissue in glands. ...
They are important for holding structures together, like ligaments. * Elastin- thin fibers that branch, forming complex networks. They are weaker than collagen fibers, but they stretch easily and can go back to normal. They are found in vocal cords and other parts of the body that are frequently stretched. 11. Compare and contrast the different types of loose connective tissue. (p. 105) * Areolar tissue- forms delicate, thin membranes throughout the body. The cells of this tissue are located far apart and separated by a gel-like extracellular matrix containing many collagenous and elastic fibers.
This tissue binds the skin to the underlying organs and fills spaces between muscles. * Adipose tissue- this tissue develops when certain cells store fat as droplets in their cytoplasm and enlarge. When these cells become so abundant that they crowd other cell types they form adipose tissue. Its found between muscles, around kidneys, behind the eyeballs, on the surface of the heart, and around certain joints. * Reticular tissue- composed of thin, collagenous fibers in a 3-D network. It helps provide the framework of certain internal organs, such as the liver and spleen. 12. Define dense connective tissue. p. 106) * Consists of many closely packed, thick, collagenous fibers and a fine network of elastic fibers. It has few cells, most of which are fibroblasts. The collagenous fibers are very strong, enabling the tissue to withstand pulling forces. As parts of tendons and ligaments. This tissue binds muscle to bone and bone to bone. 13. Explain why injured dense connective tissue and cartilage are usually slow to heal. (p. 106) * The blood supply to dense connective tissue is poor, which slows tissue repair * The lack of a direct blood supply to cartilage is also why cartilage heals slowly 14.
The Essay on How Is a Cell’s Membrane Suited to Its Functions?
Each phospholipid is composed of a non-polar (hydrophobic) region of two fatty acids pointing inwards and a polar (hydrophilic) phosphorylated alcohol head region pointing outwards on the exterior of the membrane. Connecting the phosphorylated alcohol and both fatty acids is a 3-carbon compound called glycerol. Since there is both a hydrophilic and a hydrophobic region of each phospholipid, then ...
Name the types of cartilages and describe their differences and similarities. (p. 106) * Hyaline- very fine collagenous fibers in its extracellular matrix and loks somewhat like white glass. Its found on the ends of bones in many joints, in the soft part of the nose, and in the supporting rings of the respiratory passages. Its important in the growth of most bones * Elastic- a dense network of elastic fibers and is more flexible than hyaline. It provides the framework for the external ears and for parts of the larynx. * Fibrocartilage-a very tough tissue, and has many collagenous fibers.
It’s a shock absorber for structures that are subjected to pressure. 15. Describe how bone cells are organized in bone tissue. (p. 108) * Bone matrix is deposited in thin layers called lamellae, which form concentric patterns around tiny longitudinal tubes called central canals. Bone cells are located in lacunae, which are evenly spaced within the lamellae. 16. The fluid extracellular matrix of blood is called________. (p. 109) w. White blood cells x. Red blood cells y. Platelets z. Plasma {. Bone marrow 17. Identify the locations of four types of membranes in the body and indicate the types of tissues making up each membrane. p. 110) * Serous membranes lines body cavities that lack openings to the outside. A layer of simple squamous epithelium and a thin layer of loose connective tissue. * Mucous membranes line cavities and tubes that open to the outside of the body. Epithelium overlying a layer of loose connective tissue. * Cutaneous membrane is the skin. Epithelial tissue * Synovial membrane lines joints. Connective tissues 18. Compare and contrast skeletal, smooth, and cardiac muscle tissues. (p. 110) * 19. Distinguish between neurons and neurological cells with respect to their functions. (p. 111) *
