During the time when the action potential moves through the sarcolemma a muscle twitch is in
A) contraction phase.
B) relaxation phase.
C) stimulus phase.
D) latent period.
E) isotonic period.
D
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Choose the correct statement:
a. A pH 6.3 solution has 100 times more H+ ions per liter than a pH 4.3 solution. b. 10 ml of a pH 6.3 solution has 10 times fewer H+ ions than 10 ml of a pH 4.3 solution. c. 100 ml of a solution at pH 6.3 has 10 times more H+ ions per liter than 10 ml of a solution at 6.3 d. A solution at pH 7.35 has 10 times more H+ ions per liter than a solution at pH 7.45. e. 10 ml of a pH 7.45 solution has the same H+ ion concentration as 1 ml at pH 7.45.
Which is true of vesicular transport from the cell interior across plasma membranes?
1.It requires no energy input. 2.The transported substances diffuse through membrane pores. 3.The transported substance is enclosed in a membrane-wrapped organelle that fuses with the plasma membrane. 4.It is also known as endocytosis. 5.The transported substance is attached to carrier proteins in the plasma membrane.
Carol files a suit against Duffy in a state trial court and loses. Carol
a. cannot take her case any higher in the court system. b. can insist that the United States Supreme Court hear her case. c. can plead her case before an appellate court. d. can plead her case before a small claims court.
Which of the following muscles of mastication would be responsible for mandibular elevation?
A) Temporalis B) Zygomaticus major C) Stylohyoid D) Lateral pterygoid E) Zygomaticus minor