Muscles General
What characteristic of muscle tissue allows it to respond to stimulation by the nervous system?
Excitability
Muscles of mastication most often insert into the ________.
Mandible
Knee extensors, known as the quadriceps femoris, include the ________.
three vastus muscles and the rectus femoris muscle
The muscle that assists in mastication, and is also useful to musicians, as in playing a trumpet, is the ________ muscle.
DOUBLE POINTS!!!
Buccinator
A bundle of muscle fibers within a skeletal muscle body is called a ________.
Fascicle
Slow muscle fibers contain large amounts of the oxygen-binding protein ________.
Myoglobin
Which of the following muscles runs between the larynx and the hyoid bone?
mylohyoid
geniohyoid
genioglossus
thyrohyoid
digastric
Thyrohyoid
The origin of the deltoid muscle is (the) ________ ___________. (Two origins)
Scapula and Clavicle
Attempting to lift a table that is heavier than you can lift is an example what type of contraction?
Isometric
An intermediate fiber contracts fast, but it has more ________ and greater resistance to fatigue than a fast fiber.
Mitochondria
What are the 4 major functions of Skeletal Muscle?
DOUBLE POINTS!!!
Produce Skeletal movement
Maintain posture
Support Soft tissue
Maintain body temperature
Orbicularis oris, orbicularis oculi, and platysma are part of the group of muscles known as the muscles of ________.
Muscles of facial expression
Inflammation of the flexor tendon sheath within the wrist area can restrict movement and irritate the ________, resulting in carpal tunnel syndrome.
Median nerve
Flexion of the forearm at the elbow involves the use of the principle of (a) ________ lever(s).
Third Class lever
The triceps brachii muscle is opposed in extension of the elbow by the antagonistic muscle, ________.
Biceps Brachii
How does a muscle named lateralis differ from one named latissimus?
Lateralis refers to the side of the organism, whereas latissimus refers to the width of the structure.
Which muscle(s) moves the bolus into the esophagus?
pharyngeal constrictors
Which powerful hip flexors originate alongside the iliac fossa and the inferior thoracic and lumbar vertebrae?
Iliopsoas group
What feature is common to the muscles of mastication?
They move the mandible at the temporal mandibular joint
The action of the rhomboid major muscle is to ________.
adduct and rotate the scapula downward
Aging skeletal muscles develop increasing amounts of ________.
Fibrous Connective Tissue
The digastric and omohyoid muscles are similar in that they both ________.
Both have two bellies
The ________ muscle is the most active muscle of the pectoral girdle because it can move the scapula in nearly any direction, depending on the active region and the state of other muscles.
Trapezius
These posterior neck muscles extend, rotate, and laterally flex the cervical vertebrae.
Splenius group
The muscle that can extend, adduct, and medially rotate the shoulder is (the) ________.
latissimus dorsi