If a dog starts to put its paw down on a sharp stone, the tough skin skin protects underlying structures from damage. Additionally, touch receptors in the skin send sensory signals to the spinal cord. The spinal cord then sends a signal to the muscles to lift the paw rather than continuing to press down. In this scenario, the dog may experience discomfort but avoid injury.

What two body systems are being used to protect the structures beneath the dog's skin and signal the muscles to lift the paw?
A.
integumentary and lymphatic systems
B.
integumentary and nervous systems
C.
circulatory and lymphatic systems
D.
circulatory and nervous systems

1 answer

B. integumentary and nervous systems
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