Although all skeletal muscles have different shapes, the fascicle arrangement of each muscle is exactly the same.
In order to propel food down to the esophagus, the pharyngeal constrictor muscles would be used.
Electromyography is the recording and interpretation of graphic records of the electrical activity of contracting muscles.
the difference in the positioning of the effort, load, and fulcrum
What is the major factor controlling the manner in which levers work?
the fascicles are short and attach obliquely to a central tendon that runs the length of a muscle
With regard to muscle fiber arrangement in a pennate muscle ________.
the total number of muscle cells available for contraction
What primarily determines the power of a muscle?
A muscle that provides the major force for producing a specific movement is called ________.
the muscle has two, three, or four origins, respectively
When the term biceps, triceps, or quadriceps forms part of a muscleʹs name, you can assume that ________.
There are over 600 muscles in the body.
Which of the following statements is true regarding the total number of skeletal muscles in the human body?
the muscle elevates and/or adducts a region
The names of muscles often indicate the action of the muscle. When the term levator is part of the descriptive term for a muscleʹs action, this means that ________.
are a group of muscles that lie superior to the hyoid bone and help form the floor of the oral cavity
The suprahyoid muscles ________.
to stabilize the shoulder joint and help prevent downward location of the humerus and to assist in abduction
The supraspinatus is named for its location on the posterior aspect of the scapula above the spine. What is its action?
The muscles that are found at openings of the body are collectively called ________.
the frontal belly of the epicranius
To produce horizontal wrinkles in the forehead, which of the following muscles is involved?
A 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 of the following muscles is involved in crossing one leg over the other while in a sitting position?
load is far from the fulcrum and the effort is applied near the fulcrum
If a lever operates at a mechanical disadvantage, it means that the ________.
A nursing infant develops a powerful sucking muscle that adults also use for whistling called the ________.
During contraction the two articulating bones move equally.
Which generalization concerning movement by skeletal muscles is not true?
Tennis players often complain about pain in the arm (forearm) that swings the racquet. What muscle is usually strained under these conditions?
iliopsoas and rectus femoris
Paralysis of which of the following would make an individual unable to flex the thigh?
in the body can operate at a mechanical advantage or mechanical disadvantage, depending on specific location
First-class levers ________.
medial compartment of the thigh
Adductor magnus, adductor longus, and adductor brevis are parts of a large muscle mass of the ________.
the vastus lateralis
Which of the following muscles serves as a common intramuscular injection site, particularly in infants?
Paralysis of which of the following would make an individual unable to flex the knee?