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2. Within a single fiber, the tension developed during a twitch depends on:
a. Length of the thick filament
b. Duration of the stimulus
c. Amplitude of the action potential

d. Length of the sarcomeres prior to contraction

c. The speed the action potential is propagated throughout the muscle fiber

3. The two systems that directly control homeostasis:

a. Musculoskeletal and endocrine

b. Nervous and endocrine

c. Cardiovascular and nervous

4. There are 4 primary tissue types, which of these is not a primary tissue type:

a. Connective

d. Blood

b. Neural

e. Muscle

c. Epithelial

None of the above

There are more than two systems that control homeostasis

5. The muscle functional unit responsible for force production is the:

d. Sarcolemma

a. Sarcomere

e. Calcium

Motor unit

Myocyte

6. Choose the true statement(s):
a. Biarticular muscles only produce concentric contractions

b. During an eccentric contraction the muscle neither shortens nor lengthens

C. For a given muscle, it will produce its highest forces during a concentric contraction

d. The primary purpose of concentric contractions is fixation

e. The primary purpose of eccentric contractions is deceleration

7. Homeostasis is the condition in which the body maintains:

A. A dynamic state within an unlimited range, depending on circumstances

B. Static state with little deviation from preset points

C. A relatively stable internal environment, within limits

d. The lowest possible energy usage

8. Osteoclast precursor cells are:

a. Osteocytes

b. Osteoblasts

c. Osteogenic cells (stem cells)

d. None of the above

C. Leukocytes (white blood cells)

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