1)Physiology
29 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary function of the somatic nervous system?

  • To provide involuntary control of bodily functions
  • To control the functions of internal organs
  • To process sensory information from the external environment
  • To control the movements of the musculoskeletal system (correct)

    • How does the autonomic nervous system differ from the somatic nervous system?

  • The autonomic system controls internal organs, while the somatic system controls external sensations
  • The autonomic system produces reflex activations and works involuntarily, while the somatic system works voluntarily (correct)
  • The autonomic system is activated by incoming senses, while the somatic system is activated by the body's needs
  • The autonomic system works voluntarily, while the somatic system works involuntarily

    • Which of the following is considered a special sense?

  • Pain
  • Touch
  • Proprioception
  • Vision (correct)

    • Where are the receptors for touch, pressure, proprioception, and pain located?

    <p>Throughout the skin and underlying tissue</p> Signup and view all the answers

    What is the primary function of the special senses?

    <p>To process sensory information from the external environment</p> Signup and view all the answers

    What is the purpose of the somatosensory system's receptors?

    <p>To provide awareness of activity in the surrounding area and allow appropriate or protective actions to be taken</p> Signup and view all the answers

    Which type of receptor is stimulated by chemicals in the blood?

    <p>Chemoreceptor</p> Signup and view all the answers

    Which type of mechanoreceptor is sensitive to light touch in glabrous skin?

    <p>Meissner's corpuscles</p> Signup and view all the answers

    What is the function of Ruffini endings?

    <p>Sense continuous deformation, such as heavy touch or pressure</p> Signup and view all the answers

    Which type of mechanoreceptor is stimulated by rapid movement on the skin?

    <p>Pacinian corpuscles</p> Signup and view all the answers

    Which type of receptor is stimulated by light?

    <p>Photoreceptor</p> Signup and view all the answers

    What is the function of free nerve endings?

    <p>Respond to pain, touch, pressure, and thermal stimuli</p> Signup and view all the answers

    What type of sensory receptors are Hair Follicle Receptors?

    <p>Phasic receptors</p> Signup and view all the answers

    What constitutes a 'sensory unit'?

    <p>A single sensory axon and its peripheral branches</p> Signup and view all the answers

    What is the 'receptive field' in the context of sensory receptors?

    <p>The area where a stimulus produces a sensory effect in the clusters of neighboring receptors</p> Signup and view all the answers

    What determines the intensity of a stimulus according to the text?

    <p>Both the frequency of impulse transmission and the number of receptors involved</p> Signup and view all the answers

    What affects the senses according to the 'Law of Specific Energies' mentioned in the text?

    <p>The type of sensation (modality) does not change as intensity increases</p> Signup and view all the answers

    What determines the ability to discriminate between two separate stimuli applied together?

    <p>Both the distance between the stimuli and the type of sensory receptors involved</p> Signup and view all the answers

    Which type of sensory fibers enter the spinal cord via dorsal roots?

    <p>Somatic and part of autonomic</p> Signup and view all the answers

    Where are the cell bodies of somatic afferents located?

    <p>Spinal ganglion</p> Signup and view all the answers

    What do lesions in the Dorsal Column-Medial Lemniscal System cause?

    <p>Disorders of balance</p> Signup and view all the answers

    Which receptors are associated with the Dorsal Column-Medial Lemniscus System for proprioception and fine touch?

    <p>Muscle spindles, Golgi tendon organs, Ruffini Endings</p> Signup and view all the answers

    Where do the afferents of the Dorsal Column - Medial Lemniscus System travel in the spinal cord?

    <p>Dorsal horn</p> Signup and view all the answers

    Which area in the brain contains the third neurons related to the Dorsal Column-Medial Lemniscal System?

    <p>Ventral posterolateral nucleus of Thalamus</p> Signup and view all the answers

    What percentage of sensory inputs that enter the central nervous system are eliminated?

    <p>99%</p> Signup and view all the answers

    Which type of receptor detects distant senses such as light and sound?

    <p>Teleceptors</p> Signup and view all the answers

    What is the function of receptors?

    <p>Both a and b</p> Signup and view all the answers

    What type of receptors perceive stimuli from the body's internal environment?

    <p>Interoceptors</p> Signup and view all the answers

    What happens when a receptor potential reaches a threshold voltage?

    <p>The receptor potential is converted into an action potential in the sensory axon</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser