A nurse is reinforcing teaching to a group of high school students about how penetrating traumatic brain injuries cause damage to the brain. Which of the following statements should the nurse include in the teaching?

A. "Endolymph fluid provides protection to the structures of the inner ear": Endolymph is a fluid found within the membranous labyrinth of the inner ear. It plays a crucial role in maintaining the balance of ions necessary for proper sensory function of the auditory and vestibular systems. Endolymph helps protect the delicate sensory structures of the inner ear, including the hair cells responsible for hearing and balance.

B. "Aqueous humor provides protection to the structures of the inner ear": Aqueous humor is a clear fluid that fills the anterior chamber of the eye, maintaining intraocular pressure and nourishing the cornea and lens. It is not involved in protecting the structures of the inner ear.

C. "Vitreous humor provides protection to the structures of the inner ear": Vitreous humor is a gel-like substance that fills the posterior chamber of the eye, providing structural support to the eyeball and maintaining its shape. It is not associated with protecting the structures of the inner ear.

D. "Sanguineous fluid provides protection to the structures of the inner ear": Sanguineous fluid refers to blood or a blood-like fluid, which does not directly provide protection to the structures of the inner ear. While the circulatory system supplies oxygen and nutrients to the inner ear structures, blood itself does not serve as a protective fluid within the inner ear.

A. "Vision changes occur when blood vessels leak fluid or blood under a portion of the retina": This statement describes a symptom of diabetic retinopathy, not open-angle glaucoma. In open-angle glaucoma, vision changes primarily result from increased intraocular pressure (IOP) due to impaired drainage of aqueous humor, not leakage of fluid or blood under the retina.

B. "Vision changes occur when the cloudy lens alters the passage of light through the eye": This statement describes a symptom of cataracts, not open-angle glaucoma. Cataracts involve clouding of the lens inside the eye, which affects the passage of light and leads to visual disturbances. Open-angle glaucoma, however, primarily affects the optic nerve and visual field due to increased intraocular pressure.

C. "Vision changes occur when retinal tissue pulls away from the blood vessels in the eye": This statement describes a symptom of retinal detachment, not open-angle glaucoma. Retinal detachment occurs when the retina detaches from the underlying layers of the eye, leading to vision changes and potentially vision loss. Open-angle glaucoma, on the other hand, primarily involves increased intraocular pressure and optic nerve damage.

D. "Vision changes occur when pressure in the eye is increased due to a decrease of aqueous humor": This statement is accurate. In open-angle glaucoma, vision changes occur due to increased intraocular pressure resulting from inadequate drainage of aqueous humor from the eye. This increased pressure can lead to damage of the optic nerve, resulting in peripheral vision loss and potentially blindness if left untreated.