The cytoskeleton provides support, structure, motility, and organization, and it forms tracks to direct organelle and vesicle transport. Which of the cytoskeletal elements listed below is the thickest?
(a) actin filaments
(b) microtubules
(c) intermediate filaments
(d) none of the above (all the same thickness)
(b)
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Explain how proprioceptors work
What will be an ideal response?
A disease that has a steady frequency over time in a particular geographic location is referred to as ________.
A. endemic B. chronic C. pandemic D. sporadic E. epidemic
The origin of a muscle is the point of its attachment
A. to a bone that moves. B. on the bone that pushes the muscle. C. on the bone that is secured with only one tendon. D. to a stationary bone.
Exercise can trigger an asthma attack. This is especially true if someone goes for a long run on a cold morning. The two main causes of narrowing of the bronchiole passageways can be treated with drugs that act in different ways. What are the two causes
of this narrowing, and how can drugs work to counteract these conditions? What will be an ideal response?