Biology 172 Quiz 15: The Sense Organs and Muscular Systems

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Biology 172 Quiz 15: The Sense Organs and Muscular Systems
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2013-12-17 16:01:45
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Biology 172 Quiz 15 Sense Organs Muscular Systems
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Biology 172 Quiz 15: The Sense Organs and Muscular Systems
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  1. The rods in the retina of the eye 
    A.provide exceptional visual resolution
    B.function primarily for bright-light vision 
    C.are responsible for color vision 
    D.are very sensitive to light 
    E.are found in high concentrations in the fovea
    D.are very sensitive to light
    (this multiple choice question has been scrambled)
  2. With what sensations are Pacinian corpuscles associated? 
    A.touch
    B.hot/cold 
    C.pressure 
    D.muscle stretch
    E.pain 
    C.pressure
    (this multiple choice question has been scrambled)
  3. Which structure of the ear actually converts mechanical vibrations into action potentials in neurons? 
    A.ear drum 
    B.sensory hair cells in the cochlea 
    C.auricle 
    D.external auditory canal
    E.middle ear ossicles
    B.sensory hair cells in the cochlea
    (this multiple choice question has been scrambled)
  4. The ear ossicles (i.e., malleus, incus, & stapes) are found in the 
    A.inner ear 
    B.outer ear
    C.vestibular canal
    D.external auditory canal 
    E.middle ear 
    E.middle ear
    (this multiple choice question has been scrambled)
  5. The chemoreceptors involved with our sense of olfaction may be found 
    A.in the organ of Corti
    B.inside Paccinian corpuscles
    C.in the nasal epithelium 
    D.on the surface of the tongue 
    E.under the epidermis of this skin 
    C.in the nasal epithelium
    (this multiple choice question has been scrambled)
  6. Our sense of dynamic equilibrium involves
    A.mechanoreceptors in the semicircular canals 
    B.vibrations of the organ of Corti 
    C.proprioceptors in muscle bundles 
    D.photoreceptors in the retina of the eye 
    E.free nerve endings in the skin
    A.mechanoreceptors in the semicircular canals
    (this multiple choice question has been scrambled)
  7. Accommodation, the focusing adjustments made be the eye, involves not only changing the shape of the lens, but also changing the diameter of the
    A.optic nerve 
    B.pupil 
    C.cornea
    D.fovea centralis 
    E.Eustachian tube 
    B.pupil
    (this multiple choice question has been scrambled)
  8. In order to taste any substance, 
    A.it must occur in food 
    B.molecules must ionize
    C.its molecular structure must be small 
    D.the nose must not be inflamed
    E.it must be dissolved in solution 
    E.it must be dissolved in solution
    (this multiple choice question has been scrambled)
  9. A sarcomere
    A.is found only in smooth or involuntary muscle 
    B.is the fundamental unit of compact bone
    C.is the basic functional or contractile unit of striated muscle tissue
    D.contains only actin myofilaments
    E.contains only myosin myofilaments 
    C.is the basic functional or contractile unit of striated muscle tissue
    (this multiple choice question has been scrambled)
  10. Cardiac muscle 
    A.is under voluntary control 
    B.occurs in the walls of the hollow organs of the body
    C.lines many hollow internal organs 
    D.is composed of branching striated cells 
    E.cells have no nuclei
    D.is composed of branching striated cells
    (this multiple choice question has been scrambled)
  11. What is the role of calcium in muscle contractions? 
    A.transmit the action potential across the neuromuscular junction 
    B.spread the action potential through the T tubules
    C.break the cross-bridges as a cofactor in the hydrolysis of ATP 
    D.reestablish the polarization of the plasma membrane following an action potential 
    E.bind to the troponin complex, which leads to the exposure of the myosin-binding sites
    E.bind to the troponin complex, which leads to the exposure of the myosin-binding sites
    (this multiple choice question has been scrambled)
  12. ATP is required 
    A.only during vigorous exercise 
    B.only when the sarcomere contracts 
    C.only when the sarcomere expands (relaxes)
    D.when the sarcomere contracts and when it expands 
    E.ATP is never needed for muscle cell contraction
    D.when the sarcomere contracts and when it expands
    (this multiple choice question has been scrambled)
  13. In describing muscle function, a motor unit consists of 
    A.only contracting muscle cells 
    B.a single sarcomere 
    C.only a motor neuron
    D.a gasoline-powered engine
    E.a motor neuron and the muscle cells it innervates 
    E.a motor neuron and the muscle cells it innervates
    (this multiple choice question has been scrambled)
  14. In skeletal muscle, engaging more and more motor units to contract is called 
    A.engagement
    B.recruitment 
    C.tetanus 
    D.twitching
    E.wave summation 
    B.recruitment
    (this multiple choice question has been scrambled)
  15. Contraction of a muscle will not occur as long as ________ covers the binding sites on the actin molecules. 
    A.ATP
    B.calcium 
    C.myosin 
    D.troponin
    E.tropomyosin 
    E.tropomyosin
    (this multiple choice question has been scrambled)

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