Exam 44: The Muscular-Skeletal System and Locomotion

When an organism dies, its muscles remain in a contracted state termed rigor mortis for a brief period of time. Which of the following most directly contributes to this phenomenon?

What is the primary function of the transverse tubules?

When Ron Evans generated transgenic mice in which the gene PPAR-delta was constituitively active (i.e., always expressed), he found that these mice showed a shift from fast glycolytic fibers to slow oxidative fibers. One consequence of this change was that the transgenic mice

Hydrostatic skeletons are normally used for movement by all of the following animals EXCEPT

The disease osteoporosis involves loss of both mineral and organic components from bones. Which of the following can contribute to the development of osteoporosis?

When Ron Evans generated transgenic mice in which the gene PPAR-delta was constituitively active (i.e., always expressed), he found that these mice showed a shift from fast glycolytic fibers to slow oxidative fibers. Based on this, you would also predict faster sprint speeds in the transgenic mice.

Which of the following groups of vertebrates lacks bone?

The thin filament contains _____ molecules.

When undergoing strength training, the number of _____ in each _____ undergoes a/an ___.

In which of the following animals would you NOT find an endoskeleton?

In order for something to be considered a skeleton, it must contain bone or some other hard substance.

Endoskeletons may be involved in directly protecting the body surface.

Which of the following is a component of the human axial skeleton?

When a person "works out"with weights, their muscles typically grow. This growth is due to increases in the number of myofibrils within their muscle fibers.

A skeleton that relies on muscular force exerted against water is termed

Flying animals tend to be smaller than non-flying animals.

Muscle samples are taken from two groups of men. One group performs regular intense aerobic exercise. The second group is sedentary and does not exercise. When you compare their muscle samples at the microscopic level, you expect to find that the exercising men show increases in

The streamlined shape of the dolphin, seal, and other swimming animals is most important for which of the following reasons?

A scientist looking through a microscope at a piece of shoulder muscle would see which of the following features?

Which of the following is an important function of The Vertebrate Skeleton?