Mastering A&P Homework No. 4 PDF

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This document goes over a Mastering A&P assignment based on Chapter 4 (Tissue: The Living Fabric). This assignment goes over topics such as glands, properties of tissues, locations of specific tissues, and classification of tissues. ...

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Mastering A&P Homework No. 4 1. What do the glands shown in A and B both have in common?

 Both are exocrine glands. - Both glands secrete substances onto body surfaces or into body cavities. 2. Which of the following is a property of epithelial tissue?  Epithelial tissue is innervated. - Epithelial tissue is an innervated, avascular tissue that exhibits polarity. Epithelial tissue is also highly regenerative. 3. Which type of epithelium lines the interior of the urinary bladder?  Transitional epithelium - Transitional epithelium forms the lining of hollow urinary organs, which stretch as they fill with urine. The ability of transitional cells to change their shape (undergo "transitions") allows a greater volume of urine to flow through the tube-like ureters and allows more urine to be stored in the urinary bladder. 4. Which of the numbered cell types is primarily responsible for producing protein fibers found in connective tissue proper?

 2: Fibroblast - Cell 2 is a fibroblast, which is the primary producer of the major ECM components in connective tissue proper. 5. Cells 3 and 6 are both classified as ______.  White Blood Cells - Cell 3 (a lymphocyte) and cell 6 (a neutrophil) are two types of white blood cell. 6. Which of the following statements is NOT characteristic of the areolar connective tissue pictured in the figure?  Areolar connective tissue is avascular. - Most connective tissues (except cartilage) contain blood vessels. A capillary is observed in the figure of areolar connective tissue. 7. Which of the following is NOT a role of connective tissue?  Absorption - Absorption, the movement of substances into the body, is a role of epithelial tissue. Roles of connective tissue include: binding and support, protection, insulation, and transportation of substances, via blood, within the body. 8. Why are adipose, blood, and bone all considered to be connective tissues?

 They have a common origin, mesenchyme. - Adipose, bone, and blood (like all connective tissues) are derived from mesenchyme, an embryonic tissue. Also common to all connective tissues is the presence of cells and an extracellular matrix that consists of fibers bathed in ground substance. 9. Which tissue type is responsible for regulating and controlling body functions?  Nervous Tissue - Nervous tissue is the main component of the nervous system, which regulates and controls body functions. Note: the other control system of the body is the endocrine system, which is primarily composed of glandular epithelial tissue.

10. 11. Which tissue repair process results in the formation of scar tissue?  Fibrosis - Fibrosis involves proliferation of fibrous connective tissue, called scar tissue. 12. Which tissues have little to no functional regenerative capacity?  cardiac muscle and nervous tissue in the brain and spinal cord - Cardiac muscle and the nervous tissue in the brain and spinal cord have virtually no functional regenerative capacity, and they are routinely replaced by scar tissue. 13. Injured cartilage might heal more quickly if a treatment were discovered that would __________.  stimulate blood vessels to develop within cartilage - Cartilage is normally avascular, so nutrients required for healing must diffuse from distant blood vessels, which delays the healing process. 14. After a heart attack, fibrosis occurs at the site of cardiac muscle cell death. This reduces the efficiency of the heart's pumping activity because __________.  fibrous connective tissue is incapable of contracting - Cardiac muscle contains sarcomeres, which allow for the tissue to contract when electrically stimulated. Fibrous connective tissue lacks these special contractile units. 15. What process is depicted in the basal layer of the glandular epithelium shown in B?

 Cell division - Cells are regenerated by division in the basal layer and migrate toward the apical surface to replace cells lost by fragmentation. Cell division is indicated by the mitotic phase cells located in the deepest (basal) layer of the glandular epithelium....