Tay-Sach's disease is characterized by the accumulation of large amounts of debris in the cell cytoplasm. This stimulus has no effect and does not stimulate an action potential. A researcher discovered a new hormone that causes blood calcium levels to increase. Digitalis is a drug given to persons with heart problems. Which of these is a function of connective tissue a. lining of body surfaces b. shortening or contraction to produce movement c. transport of materials within the body d. protection from abrasion 19.
Local anesthetics block pain by inhibiting the formation of action potentials.
You examine a cell under the microscope and notice that there are many secretory vesicles within the cytoplasm. A test of the vesicles revels that the contents of the vesicles is the extracellular protein metalloproteinase. The solute composition of a cell and its extracellular fluid are shown. A membrane junction that is formed when the extracellular surfaces of two adjacent cell membranes are joined together so that there is no extracellular space between them and inhibits the movement of substances between cells is likely a a. desmosome b. gap junction c. A peripheral membrane protein would a. have both polar and nonpolar regions b. likely act as a carrier or channel c.