Chapter 13 The Peripheral Nervous System and Reflex Activity (Mastering A&P)

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lonelygirl
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214045
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Chapter 13 The Peripheral Nervous System and Reflex Activity (Mastering A&P)
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2013-05-08 05:04:55
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Biology Anatomy Physiology
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Biology 103A
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  1. Anatomically, all general sensory receptors are encapsulated nerve endings. True or False
    False; Anatomically, general sensory receptors are nerve endings that are either nonencapsulated (free) or encapsulated.
  2. __________ do NOT exhibit the property of adaptation.

    A. Sensory receptors
    B. Photoreceptors
    C. Phasic receptors
    D. Tonic receptors
    D. Tonic receptors
    (this multiple choice question has been scrambled)
  3. Which of the following statements is true?



    A. The effects of neurotransmitters released from either sympathetic or parasympathetic postganglionic neurons may be stimulatory
    or inhibitory.
    B. The effects of neurotransmitters released by somatic motor neurons may be either stimulatory or inhibitory.
    C. The effects of neurotransmitters released by sympathetic postganglionic neurons are always stimulatory.
    D. The effects of neurotransmitters released by parasympathetic postganglionic neurons are always inhibitory.
    A. The effects of neurotransmitters released from either sympathetic or parasympathetic postganglionic neurons may be stimulatory or inhibitory.
  4. Which of the following is the site of the release of the neurotransmitter norepinephrine?




    A. terminus of a somatic motor neuron
    B. terminus of a sympathetic postganglionic neuron
    C. terminus of a parasympathetic postganglionic neuron
    D. within the ganglia of the sympathetic division
    E. within the ganglia of the parasympathetic division
    B. terminus of a sympathetic postganglionic neuron
    (this multiple choice question has been scrambled)
  5. Somatic reflexes activate __________.

    A. glands
    B. smooth muscle
    C. skeletal muscle
    D. cardiac muscle
    C. skeletal muscle
    (this multiple choice question has been scrambled)
  6. What type of nerve fibers are found in the ventral ramus of a spinal nerve?

    A. autonomic only
    B. motor only
    C. sensory only
    D. both sensory and motor
    D. both sensory and motor
    (this multiple choice question has been scrambled)
  7. The nerve fibers labeled B and C are both classified as which of the following?



    A. type Ia fibers
    B. gamma efferent fibers
    C. alpha efferent fibers
    D. type II fibers
    C. alpha efferent fibers
    (this multiple choice question has been scrambled)
  8. Which of the receptor types contribute to the sense of touch by responding to deep pressure stimuli?



    A. Modified free nerve endings: Tactile (Merkel) discs
    B. Hair follicle receptors
    C. Lamellar (Pacinian) corpuscles
    D. Free nerve endings of sensory neurons
    E. Muscle spindles
    C. Lamellar (Pacinian) corpuscles
    (this multiple choice question has been scrambled)
  9. The first level of neural integration in the somatosensory system is the __________ level.

    A. circuit
    B. abstraction
    C. receptor
    D. perceptual
    C. receptor
    (this multiple choice question has been scrambled)
  10. __________ are collections of neuron cell bodies associated with nerves in the peripheral nervous system (PNS).

    A. Myelin sheaths
    B. Nuclei
    C. Ganglia
    D. Fascicles
    C. Ganglia
    (this multiple choice question has been scrambled)
  11. The knee-jerk reflex is an example of a __________.

    A. tendon reflex
    B. flexor reflex
    C. stretch reflex
    D. superficial reflex
    C. stretch reflex
    (this multiple choice question has been scrambled)
  12. __________ are receptors that can respond to changes in pressure.

    A. Chemoreceptors
    B. Mechanoreceptors
    C. Photoreceptors
    D. Nociceptors
    B. Mechanoreceptors
    (this multiple choice question has been scrambled)
  13. The circular structures shown within both pathways B and C represent which of the following?



    A. rami
    B. nuclei
    C. tracts
    D. ganglia
    D. ganglia
    (this multiple choice question has been scrambled)
  14. Which of the following lists the hierarchy of motor control from lowest to highest level of control?

    A. projection level, precommand level, segmental level
    B. precommand level, projection level, segmental level
    C. segmental level, precommand level, projection level
    D. segmental level, projection level, precommand level
    D. segmental level, projection level, precommand level
    (this multiple choice question has been scrambled)
  15. Which of the following is NOT used to classify sensory receptors?

    A. structural complexity
    B. location
    C. the type of stimulus they detect
    D. the number of dendritic endings present
    D. the number of dendritic endings present
    (this multiple choice question has been scrambled)
  16. Which of the receptor types pictured function as exteroceptors?

    A. spinal cord
    B. cerebellum
    C. basal nuclei
    D. brain stem
    A. spinal cord
    (this multiple choice question has been scrambled)
  17. Which of the receptor types pictured function as exteroceptors?



    A
    B
    C
    D
    E
    A,C,D,E
  18. The primary nerve that controls breathing is found in which nerve plexus?

    A. sacral
    B. cervical
    C. lumbar
    D. brachial
    B. cervical
    (this multiple choice question has been scrambled)
  19. The synapse between which of the following two neurons is a part of a monosynaptic reflex arc?



    A. A and B
    B. A and D
    C. B and C
    A. A and B
    (this multiple choice question has been scrambled)
  20. Which type of sensory receptor allows us to feel an insect landing on our skin?

    A. thermoreceptor
    B. nociceptor
    C. mechanoreceptor
    D. chemoreceptor
    C. mechanoreceptor
    (this multiple choice question has been scrambled)
  21. Neurons that control the voluntary movement of the arm would be associated with which pathway?



    A. B and C
    B. B only
    C. C only
    D. A only
    D. A only
    (this multiple choice question has been scrambled)
  22. Which of the receptor types pictured function exclusively as proprioceptors?



    B
    C
    D
    B
  23. Which of the following is composed of encapsulated nerve endings?

    A. muscle spindles
    B. hair follicle receptors
    C. free nerve endings of sensory neurons
    D. tactile discs
    A. muscle spindles
    (this multiple choice question has been scrambled)
  24. Which pathways comprise the autonomic nervous system?



    A. C only
    B. B and C
    C. A and C
    D. B only
    E. A only
    B. B and C
    (this multiple choice question has been scrambled)
  25. Which reflex is important for maintaining muscle tone?

    A. stretch reflex
    B. flexor reflex
    C. tendon reflex
    D. crossed-extensor reflex
    A. stretch reflex
    (this multiple choice question has been scrambled)
  26. Which of the receptor types above might function as a nociceptor?



    A. C
    B. E
    C. All of the listed responses are correct.
    D. A
    D. A
    (this multiple choice question has been scrambled)
  27. The five basic components of all reflex arcs.
    • 1. receptor
    • 2. sensory neuron
    • 3. integration center
    • 4. motor neuron
    • 5. effector

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