Seeley's Anatomy & Physiology, Final Exam 163 questions and solutions

Seeley's Anatomy & Physiology, Final Exam 163 xe xe xe xe xe xe




1. positive-feedback mechanisms: - are you in a normal healthy individual xe xe xe xe xe xe xe xe xe




- are used to amplify the effect or response of a system
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- sometimes can create a deviation from homeostasis that leads to death xe xe xe xe xe xe xe xe xe xe




- cause the deviation from normal to become even more pronounced
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2. Which portion of a feedback mechanism carries out a response to change a
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body variable?: effector
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3. Homeostasis is the condition produced by: The tendency for change in a body x
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variable to be counteracted as soon as the body variable goes past its normal range of
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values
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4. ,locatedwithin the cytoplasm of the cell,facilitate the movement of x
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chromosomes during cell division.: centrioles
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5. are components of the cytoskeleton that help to provide support, xe xe xe xe xe xe xe xe xe




assist in cell division, and form cilia.: microtubules
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6. movable projections from the surface of cells found in abundance and the xe xe xe xe xe xe xe xe xe xe xe




respiratory tract are
xe .: cilia xe xe xe xe




7. The sperm cell is able to move because of its
xe .: flagellum xe xe xe xe xe xe xe xe xe xe




8. active transport: - requires metabolic energy (ATPs)
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- may exchange one substance for another
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- involves carrier molecules xe xe




9. phospholipid molecules: are arranged in a double layer in the cell membrane. xe xe xe xe xe xe xe xe xe xe xe




10. Majorcomponentsoftheextracellularmatrixofconnectivetissueinclude-
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: protein fibers, ground substance, fluid
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11. connective tissue cells whose names contain the suffix -cyte: maintain the xe xe xe xe xe xe xe xe xe xe




matrix
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12. The connective tissue that composes tendons and ligaments is: dense
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collagenous connective tissue
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13. You would normally expect to find xe epitheliumintheouterlayerofthe xe xe xe xe xe xe xe xe xe xe xe




skin: stratified squamous
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14. You would normally expect to find xe epithelium in the urinary bladder.- xe xe xe xe xe xe xe xe xe




: transitional
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15. VitaminD: -isformedfromaprecursormoleculethatismodifiedintheliverand xe xe xe xe xe xe xe xe xe xe xe xe xe xe xe




kidneys
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- stimulus calcium and phosphate uptake in the small intestinexe xe xe xe xe xe xe xe




- isformedfromaprecursormoleculethatismadewhenskinisexposedtoultraviolet light
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- Maybe required in the diet if a person is exposed to very little ultraviolet light
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16. fingerprints and footprints are produced by dermal projections into the xe xe xe xe xe xe xe xe xe




epidermis called
xe .: papillae xe xe xe




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, Seeley's Anatomy & Physiology, Final Exam 163 xe xe xe xe xe xe




17. Thetypeofglandsthatopenonsurfaceofskinandhaveawaterysecretion are
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: eccrine sweat glands
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18. sebaceous glands: produce an oily white substance rich in lipids xe xe xe xe xe xe xe xe xe




19. The skeletal system aids in movement by: acting as points of attachment for
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muscle to provide leverage.
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20. is a unique movement that occurs at the thumb as it moves toward thexe xe xe xe xe xe xe xe xe xe xe xe xe




little finger.: opposition
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21. Bones is a type of: connective tissue. xe xe xe xe xe xe




22. joints are classified structurally according to the xe thatbindsthem,and xe xe xe xe xe xe x
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functionally according to their
xe .: connective tissue, degree of motion xe xe xe xe xe xe xe xe xe




23. what is the microscopic study of tissues?: histology xe xe xe xe xe xe xe




24. The four primary tissue types are: epithelial, connective, muscular, nervous
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25. The result of is the division of a cell's chromosomes into two new
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nuclei, each of which has the same amount and type of DNA as the original
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nucleus.: mitosis
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26. The division of the cell cytoplasm is called xe and occurs with the xe xe xe xe xe xe xe x e x e xe xe xe




production of two new cells.: cytokinesis
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27. Mitosis forms: two daughter cells with the same amount of DNA as the mother cell.
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28. muscles that work together to cause movement are called: synergists xe xe xe xe xe xe xe xe xe




29. extensibility is the ability of skeletal muscle to: be stretched. xe xe xe xe xe xe xe xe xe




30. The is a group of muscle fibers surrounded by perimysium.:muscle
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fascicle
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31. In skeletal muscle contraction relaxation CA2+: are returned to the
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sacroplasmic reticulum by active transport.
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32. A high - energy molecule that can be quickly used to produce ATP is:cre-
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atine phosphate
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33. The specific molecules that provide calcium-binding sites on actin are
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molecules.: troponin xe xe




34. In contraction the amount of tension increases during contraction, xe xe xe xe xe xe xe




but the length of the muscle does not change.: isometric
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35. Thepartoftheepithalamusthatisanendocrinegland,is locatedposterior to
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the thalamus, and may influence puberty, is the
xe xe .: pineal gland xe xe xe xe xe xe xe xe xe




36. Axons: - carry action potentials away from the cell body xe xe xe xe xe xe xe xe xe




- are often surrounded by a myelin sheath
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- may branch to form collateral axons
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- have an axon hillock which is devoid of Nissl bodies
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37. The Nodes of Ranvier: - allow for saltatory conduction of the action potential
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- increase the conduction velocity of an action potential xe xe xe xe xe xe xe




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