The organelles that are the source of the spindle fibers are the
A. lysosomes.
B. mitochondria.
C. centrioles.
D. nucleus.
E. ribosomes.
C
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Action potentials are transmitted on a one-to-one basis at both a neuromuscular junction and a synapse
Indicate whether the statement is true or false
Acetylcholine exerts its effect by
A. stimulating the motor neuron's synaptic knob. B. binding to receptors at the motor end plate. C. activating acetylcholinesterase. D. allowing calcium to enter the cell.
Coronal, sagittal, and lambdoid are examples of ________
A) gomphoses B) serrate sutures C) plane sutures D) syndesmoses E) lap sutures
A woman has her right breast and right axillary lymph nodes removed. Which of the following might occur?
A. Right lymphatic duct drainage decreases causing edema in the right arm. B. The thoracic duct would be severed. C. Lymph drainage would be affected in both legs. D. Cisterna chyli flow increases. E. Lymph drainage would be affected in her left arm.