front 1 Which of the following has (have) both endocrine and exocrine activity? | back 1 the pancreas |
front 2 Penguins, seals, and tuna have body forms that permit rapid swimming, because | back 2 the shape is a convergent evolutionary solution to the need to reduce drag while swimming |
front 3 Interstitial fluid | back 3 the route for the exchange of materials between blood and bloody cells |
front 4 Tissues are composed of cells, and tissues functioning together make up | back 4 organs |
front 5 An exchange surface is direct contact with the external environment is found in the | back 5 lungs |
front 6 The absorptive epithelia in the gut are considered "polarized" because | back 6 the structures on the apical surface are different than those on the basal surface |
front 7 An example of connective tissue is the | back 7 blood |
front 8 Connective tissues typically have | back 8 relatively few cells and a large amount of extracellular matrix |
front 9 If you gently twist your earlobe, it does not remain distorted because it contains | back 9 elastic fibers |
front 10 The nourishment, insulation, and support for neurons is the result of activity by the | back 10 glial cells |
front 11 Fibroblasts secrete | back 11 proteins for connective fibers |
front 12 Blood is best classified as connective tissue because | back 12 its cells are separated from each other by an extracellular matrix |
front 13 Muscles are joined to bones by | back 13 tendons |
front 14 With its abundance to collagenous fibers, cartilage is an example of | back 14 connective tissue |
front 15 All types of muscle tissue have | back 15 interactions between actin and myosin |
front 16 All skeletal muscle fibers are both | back 16 striated and under voluntary control |
front 17 The type of muscle tissue surrounding internal organs, other than the heart, is | back 17 smooth muscle |
front 18 Food moves along the digestive tract as the result of contractions by | back 18 smooth muscle |
front 19 The body's automatic tendency to maintain a constant and optimal internal environment is termed | back 19 homeostasis |
front 20 An example of a properly functioning homeostatic control system is seen when | back 20 the kidneys excrete salt into the urine when dietary salt levels rise |
front 21 An example of effectors' roles in homeostatic responses is observable when | back 21 an increase in body temperature results from involuntary shivering |
front 22 In a survivably cold environment, an ectotherm is most likely to survive an extended period of food deprivation than would an equally sized endotherm because the ectotherm | back 22 invests little energy in temperature regulation |
front 23 Humans can lose, but cannot gain, heat through process of | back 23 evaporation |
front 24 An example of an ectothermic organism that has few or no behavioral options when it comes to its ability to adjust its body temperature is a | back 24 sea star, a marine invertebrate |
front 25 The thermoregulatory response of an overheated dog in a very hot environment is impaired if the response causes | back 25 body temperature to increase to match the environmental temperature. |
front 26 The panting responses that are observed in overheated birds and mammals dissipates excess heat by | back 26 evaporation |
front 27 An example of an organism that has only behavioral controls over its body temperature is the | back 27 green frog |
front 28 Most land-dwelling invertebrates and all of the amphibians | back 28 are ectothermic organisms with variable body temperatures |
front 29 The temperature-regulating center of vertebrate animals is located in the | back 29 hypothalamus |
front 30 Seasonal changes in snake activity are due to the fact that the snake | back 30 is more active in summer because it can gain body heat by conduction. |
front 31 Panting by an overheated dog achieves cooling by | back 31 evaporation |
front 32 Animals that migrate great distances would obtain the greatest energetic benefit of storing chemical energy as | back 32 fats |