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Involuntary or voluntary control?

Exercise and reference answers

Items
  1. Group
    Involuntary
    Item
    Internal sphinc.
  2. Group
    Involuntary
    Item
    Smooth muscle
  3. Group
    Involuntary
    Item
    Autonomic drive
  4. Group
    Voluntary
    Item
    External sphinc.
  5. Group
    Voluntary
    Item
    Skeletal muscle
  6. Group
    Voluntary
    Item
    Pudendal nerve
Groups
  1. Item
    Involuntary
  2. Item
    Voluntary
Instructions
Steer each falling structure onto its control type. Alike types merge and grow.

Explanation

_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 25 "The Urinary System", section Urethra_
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