A&P Chapter 10

Which type of lever is demonstrated by using scissors? A. a fourth-class lever B. a first-class lever C. a third-class lever D. a second-class lever

What muscle is primarily responsible for preventing foot drop?

What is the major factor controlling how levers work?

Which of the following is not a muscle primarily involved in the breathing process?

What is the main factor that determines the power of a muscle?

What is a muscle that provides the major force for producing a specific movement called?

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

The most powerful muscle in the body is the ________.

The names of muscles often indicate the action of the muscle. What does the term levator mean?

Which of the following describes the suprahyoid muscles?

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

Which of the following muscles is not a rotator cuff muscle?

Which of the following muscles is involved in producing horizontal wrinkles in the forehead?

cute, little curly-haired child is sitting behind you in church. You turn around for a moment and she sticks her tongue out at you. Which tongue muscle did she use?

Which group of muscles flexes and rotates the neck?

Which of the following muscles is involved in crossing one leg over the other while in a sitting position?

which of the following muscles insets by the calcaneal tendon?

If a lever operates at a mechanical disadvantage, it means that the ________.

Which of the following muscles fixes and depresses the ribs and stabilizes the pelvis during walking?

A muscle that opposes, or reverses, a particular movement is a(n) ________.

What type of muscle assists an agonist by causing a like movement or by stabilizing a joint over which an agonist acts?

Which of the following is not a member of the hamstrings?

A nursing infant develops a powerful sucking muscle that adults also use for whistling. What is this muscle called?

spasms of this straplike muscle often result in wryneck or torticollis

which generalization concerning movement by skeletal muscles is not true?

Which of these is not a way of classifying muscles?

Which of the following muscles is not a member of the hamstrings group?

Which of the following best describes the orbicularis oris

Which muscle group is involved when a "pulled groin" occurs?

What are the levers that operate at a mechanical advantage called?

Tennis players often complain about pain in the arm (forarm) that swings the racquet. What muscle is usually strained under these conditions?

Which muscles is "are" contracted to exhale forcibly

Paralysis of which of the following would make an individual unable to flex the thigh?

First class levers

What do the genioglossus, hyoglossus, and styloglossus muscles have in common?

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

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

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

Which of the following muscles serves as a common intramuscular injection site, particularly in infants?

Paralysis of which of the following muscles would make an individual unable to flex the knee?

Which of the following muscles does not act in plantar flexion?

A pair of tweezers is a good example of a second class lever

Both first and second class levers operate at a mechanical advantage

Although all skeletal muscles have different shapes, the fascicle arrangement of each muscle is exactly the same.

Muscles are only able to pull, they never push

Regardless of type, all levers follow the same basic principle: effort farther than load from fulcrum = mechanical advantage; effort nearer than load to fulcrum = mechanical disadvantage.

The muscle that prevents the biting of the cheek when chewing is the buccinator.

muscles that help maintain upright posture are fixators

Deep muscles of the thorax promote movements for breathing

The deltoid is a prime mover of the arm that acts in adduction

the soleus is a synergist of the gastrocnemius during plantar flexion

Muscles that help to maintain posture are often called synergists.

in order to propel food down the esophagus, the pharyngeal constrictor muscles are used.

The major head flexors are the sternocleidomastoid muscles, with the help of the muscles attached to the hyoid bone.

The arrangement of a muscle's fascicles determines its range of motion and power.

Muscle power does not depend on the direction of the fascicles.

The calcaneal tendon (Achilles tendon) is the largest, strongest tendon in the body.

Electromyography is the recording and interpretation of graphic records of the electrical activity of contracting muscles.

The broadest muscle of the back is the latissimus dorsi

Muscle spasms of the back often are due to the erector spinae contraction.

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

The muscles of facial expression insert into skin or other muscles, not bones.

Most superficial thorax muscles are extrinsic shoulder muscles.