The nurse notes that a patient is able to walk down steps without having to look down at her feet. This finding is considered
a. Optic reflex c. Labyrinthine sense
b. Antigravity reflex d. Proprioception
D
The optic reflex is a visual sensation that affects posture by helping the person establish spatial relationships to surrounding objects. The antigravity reflex occurs when extensor muscles are stretched beyond a certain point and the stimulation causes a reflex contraction that counteracts the gravitational pull. The labyrinthine sense occurs when sensory organs in the ear activate impulses when the head is turned. Proprioception is the awareness of posture, movement, and changes in equilibrium and the knowledge of position, weight, and resistance of objects in relation to the body. An example of this is walking down the steps without looking at the feet.
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