Exam 2 Spring 2014 1. Neuroglial cells that regulate neurotransmitter metabolism and capillary permeability are: a. neurolemmacytes b. astrocytes c. oligodendrocytes d. neurons
2. The portion of the nervous system concerned with afferent input from skeletal muscle is: a. visceral sensory b. somatic motor c. somatosensory d. propriosensory
3 Light adaptation of the eye occurs due to: a .a decrease in the active photo pigment b. an increase in active photopigment c. a shift to using rod cells d. a shift to using cone cells. e both b and c
4. A Na+/ K+ ATPase on a neuron membrane acts to: a. create ion gradients necessary for creating a membrane potential b. creates most of the charge difference across the membrane …show more content…
Which of the following is located in the sarcoplasmic reticulum membrane? a. DHP receptor b. ryanodine receptor c. Ca ATPase d. both b and c
46. The smooth sustained contraction that is a result of a high frequency of stimulation is: a. recruitment b. unfused tetanus c. fused tetanus d. treppe
47. Stretch increases the strength of contraction in: a. skeletal muscle b. single unit smooth muscle c. multiunit smooth muscle d. cardiac muscle
48. Which of the following is a function of the middle ear? a. amplification of signal strength b. reduction of signal strength c. equalization of pressure d. all of the above
49. We can distinguish many different tastes because: a. the law of proportions on 5 types of taste receptors provides many potential combinations of stimuli b. the law of proportions on 4 types of taste receptors provides many potential combinations of stimuli c. stimulation of both taste and olfactory receptors interact to provide what we consider to be taste d. both b and c are important e. both a and c are important
50. The time/tension curve of a muscle twitch is asymmetrical because: a. affinity to ADP is increased during contraction resulting in fast cross bridge