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Exam 10: The Muscular System

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Question 41

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When the term biceps, triceps, or quadriceps forms part of a muscle's name, what does it tell you about the muscle?

A) The muscle has two, three, or four insertions, respectively.
B) The muscle has two, three, or four origins, respectively.
C) The muscle is able to change direction twice, three times, or four times faster than other muscles, respectively.
D) The muscle has two, three, or four functions, respectively.

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Question 42

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Muscles connecting to the hyoid bone are important for swallowing and speech.

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Question 43

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The is the main chewing muscle.

What is the major factor controlling how levers work?

Brian decided to enter a 5- mile race designed to raise money for a class trip. He did not do any preconditioning, nor has he ever jogged before. The morning after the race, Brian had so much pain in both his anterior legs, he was unable to go to school. What caused this pain?

Figure 10.3Using Figure 10.3, match the following: -How can a lever system work at a disadvantage but still be of use to us?

Which of the following muscles is a flexor of the thigh?

Which of the following muscles is involved in inversion at the ankle joint?

Muscles that help to maintain posture are often called synergists.

Figure 10.2Using Figure 10.2, match the following: -Coracobrachialis.

The is a synergist of the latissimus dorsi; it extends, medially rotates, and adducts the humerus.

Figure 10.3Using Figure 10.3, match the following: -Teres major muscle.

The soleus is a synergist of the gastrocnemius during plantar flexion.

Figure 10.1Using Figure 10.1, match the following: -Which muscle is used for normal breathing and which additional muscles are used when performing strenuous exercise?

If L = load, F = fulcrum, and E = effort, what type of lever system is described as LEF?

Figure 10.2Using Figure 10.2, match the following: -Serratus anterior.

The supraspinatus is named for its location on the posterior aspect of the scapula above the spine. What is its action?

Figure 10.3Using Figure 10.3, match the following: -What muscles are involved in biting and chewing an apple?

Muscles that help maintain upright posture are fixators.

In emphysema, the lungs become overdistended with trapped air. Effective abdominal breathing is decreased. Describe the muscles involved when breathing becomes an active process, such as a patient who has emphysema.