68) The insular lobe of the brain performs _____________functions.
A) visionperception            B)speech            C)gustatory            D)higher executive/decision
70) A neurotransmitter, _________________, is the main chemicalsignal found at a neuromuscular junction.
A)dopamine               B)calcium               C)acetylcholine               D)acetylcholinesterase
73) The most powerful muscle in the body is the ________.
A) quadricepsfemoris        B) rectusabdominis        C)gastrocnemius        D)gluteus maximus
78) The signal on the membrane of a neuron’s dendrites and cellbody is called a(n) ________________.
A) actionpotential            B)neurotransmitter            C)gradedpotential            D)ligand
79) Isotonic contraction describes a muscle _____________ and_______________.
A) contracting;shortening               B)not contracting; shortening
C) not contracting; notshortening               D)contracting; not shortening
81) If ____________ and _____________ are absent or depleted,there will be no muscle contraction.
A) calcium;dopamine               B)acetylcholine; acetylcholinesterase   ÂÂ
C) ATP;acetylcholinesterase               D)calcium; ATP
83) Muscles with a very high stimulus frequency that reach amaximum tension are described as being in a _______________state.
A)sub-threshold               B)fused (complete)tetanus               C)fused (incomplete)tetanus               D)twitch
84) A constant, slightly contracted state of all muscles iscalled muscle ______________.
A)tone               B)twitch               C)summation               D)relaxation
91) The neurotransmitter concentration in the synaptic cleftmust be tightly regulated for neurons to function properly. Whichof the following glial cells is most responsible for thisregulation?
A)microglia             B)astrocytes             C)Schwanncells             D)oligodendrocytes
93) Saltatory conduction of an action potential is made possibleby ________.
A) the myelinsheath                B)large nerve fibers
C) diphasicimpulses                D)erratic transmission of nerve impulses
