A nurse is teaching a parent of a-month-old infant about home safety.

Which of the following instructions should the nurse include in the teaching?( select all that apply)

Choice A rationale

Vibration of the eardrum is not directly transmitted to the eighth cranial nerve, bypassing the inner ear structures. The vibrations from the eardrum are first transmitted through the ossicles (tiny bones in the middle ear) to the cochlea in the inner ear.

Choice B rationale

Sound waves enter the ear canal, but they are not directly converted to electrical impulses. The sound waves cause the eardrum to vibrate, and these vibrations are transmitted through the ossicles to the cochlea, where they are converted into electrical signals that are sent to the brain via the eighth cranial nerve.

Choice C rationale

Vibration of the eardrum transmits through the bony ossicles to the perilymph in the inner ear, stimulating the eighth cranial nerve. This is the correct description of the process of hearing.

Choice D rationale

Sound is not transmitted directly from the eardrum to the brain. The sound-induced vibrations of the eardrum are transmitted through the ossicles to the cochlea, where they are converted into electrical signals that are sent to the brain via the eighth cranial nerve.

Choice A rationale

Increased collagen is not a factor that would lead to a pressure injury in a client with impaired mobility. Collagen is a protein that helps in the formation of skin and other connective tissues.

Choice B rationale

Decreased serum calcium is not directly related to the development of pressure injuries. While calcium is important for bone health and muscle function, it does not play a direct role in skin integrity.

Choice C rationale

Increased muscle mass is not a risk factor for pressure injuries. In fact, good muscle mass can help distribute pressure more evenly and potentially reduce the risk of pressure injuries.

Choice D rationale

Decreased circulation is a major risk factor for the development of pressure injuries. When blood flow to an area of the body is reduced, the tissues in that area can become deprived of oxygen and nutrients, leading to cell death and the formation of pressure injuries.