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Three classes of muscle in humans

Skeletal muscle__________ X

Cardiac muscle__________ X

Smooth muscle__________ X

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Chapter 12Muscular

System

Fig. 12.2

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What is a fascicle?

Where is connective tissue found?

How is a tendon formed?

What are bursa, and what is their function?

What is the origin of a muscle?

What is the insertion?

What is meant by prime mover?

What is/are synergists?

Fig. 12.3

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Why do muscles pull, but not push?

What is an antagonist?

Give an example of two muscles that are antagonistic:

Fig. 12.5

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Table 12.1

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A muscle fiber is a cell, but its organelles have special names:

Label the muscle fiber on the next page.

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Label the name and function of each structure:

Fig. 12.8a

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Neuromuscular junctionWatch the video (link on website) and summarize what is happening at each stage:

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Fig. 12.8b

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• Draw arrows to show muscle contraction.• Draw triangles where ATP is split into ADP + P• Which mineral ion is necessary for muscle contraction?

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What is a muscle twitch?

Define / explain each term as part a muscle twitch:

Fig. 12.10

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Title: ___________________________

What are the four possible energy sources for muscle?

Summarize how use of each energy source changes as length of submaximal exercise prolongs:

Fig. 12.11

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Pro(s):

Con(s):

Title:

Pro(s):

Con(s):

Pro(s):

Con(s):

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Contrast Slow-twitch and Fast-twitch muscle fibers:

Slow-Twitch Fast-Twitch

aerobic or anaerobic

fibers per unit

mitochondria

myoglobin

useful for

power

fatigue

Fig. 12.13

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