Reference no: EM132934521

Name the three types of muscle tissue and answer the following questions about each:

a. Single or multiple nuclei?

b. Striated or non striated?

c. Where this type of muscle can be found in the body

2. There are several analogous cellular structures in a muscle fiber, some examples of this are the sarcolemma, sarcoplasm, and sarcoplasmic reticulum.

a. Compare and contrast the functions of these structures to normal cellular structures

3. Explain the sliding filament model - what happens to the sarcomere when the muscle fibers shorten?

a. What is the energy source that fuels muscle contraction?

b. What happens to the H band during contraction of the sarcomere?

c. Does the A band change during muscle contraction?

4. Compare and contrast slow twitch vs fast twitch fibers.

a. Compare their colors. What is their difference due to?

b. Which type of muscle fibers has an aerobic metabolism?

c. Compare a long distance runner and a short distance runner. Which muscle fiber type would you expect to be predominant in each runner?

5.Explain the pathway of a the spinal cord reflex arc in the context of touching a hot stove and include the following structures:

a. Dorsal root ganglion, ventral root, dendrites motor neuron axon, sensory receptor, muscle.

6. Compare and contrast the divisions of the autonomic nervous system.

a. Which ones are voluntary?

b. What are the functions of each division?

c. Which division of the autonomic nervous system would kick in in response to a bear chasing you? How would your pupils respond?