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32 Cards in this Set
- Front
- Back
Which functional group has the major responsibility for producing a specific movement?
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Agonists
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Which of the following muscles is named for it's origin and insertion?
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sternocleidomastoid
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Which of the following is CORRECTLY matched?
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convergent arrangement of fascicles: fan shaped muscle
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Most skeletal muscles of the body act in _______.
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Third-class lever systems
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The major head flexor muscles are the _______.
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sternocleidomastoid muscles
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The main forearm extensor is the _____.
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triceps brachii
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The _____ muscles compress the cheeks to help keep food between the grinding surfaces of the teeth while chewing
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buccinators
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which are the most important muscles of inspiration (inhalation)?
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diaphragm
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Which of the following is a hamstring muscle?
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Biceps femoris
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which of the following muscles is innervated by the phrenic nerves?
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Diaphragm
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A reduction in the lateral angle of the glenohumeral joint in relation to the anatomical position would be called ______.
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adduction
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Movement of the shoulder laterally away from the body is called ______.
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Abduction
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The prime mover of hip extension is the _______.
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Gluteus maximus
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The tensor fascia late is involved in hip _____.
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abduction
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Muscles that act on the knee joint form most of the mass of the _____.
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Thigh
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To allow for flexion, the _____ unlocks the knee joint.
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Popliteus
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Muscles are only able to pull, never push.
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True
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Which of the following is NOT used as a criterion for naming muscles?
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Whether the muscle is controlled by the involuntary or voluntary nervous system
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Which is correctly matched?
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Rectus: straight
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When the tern biceps, triceps, or quadriceps forms part of a muscle's name, what does it tell you about the muscle?
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The muscle has two, three, or four origins, respectively
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The names of muscles often indicate the action of the muscle. What does the term levator mean?
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The muscle elevates and/or adducts a region
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If a lever operates at a mechanical disadvantage, it means that the ________.
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Load is far from the fulcrum and the effort is applied near the fulcrum
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What is the main factor that determines the power of a musle?
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The total number of muscle cells available for contraction
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What is the major factor controlling how levers work?
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The difference in the positioning of the effort, load, and fulcrum
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What are the levers that operate at a mechanical advantage called?
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Power levers
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Which of the following are motor areas of the cerebral cortex that lie in the posterior part of the frontal lobes and control voluntary movement?
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Primary motor cortex; premotor cortex; Broca's area; frontal eye field
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Patients who have lesions involving Broca's area _____.
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can understand language, but have difficulty speaking
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Which protective covering of the brain provides passageways for cerebrospinal fluid (CSF) to drain into superior sagittal sinus?
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arachnoid matter
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Which of the following is NOT a feature of the major spinal cord tracts (pathways)?
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memory
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What part of the spinal cord represents the collection of nerve roots at the inferior end of the vertebral canal?
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cauda equine
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Which of the following hypothalamic control centers would you predict is the LEAST important for survival?
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suprachiasmatic nucleus
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Which of the following is a characteristic of a coma but is NOT characteristic of sleep?
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Continuously reduces mitochondrial activity in brain neurons
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