The part of the ear that vibrates first when sound waves enter the ear is the

The answer is eardrum (or tympanic membrane).

As sound waves enter the ear, they travel through the outer ear to the eardrum. By striking the eardrum, it begins to vibrate. Sound vibration is transmitted to the hammer (malleus), then to the incus and stapes. Stapes vibration moves the oval window and it is passed onto cochlea. The cochlea contains the receptor organ of hearing which translates the sound vibration into impulses which are then sent to the brain.

If these are the missing choices: a. to determine skin temperature, place the back of your hand against the patient's skin.b. determine body temperature by touching the patient's hands and feet.c. skin temperature will tell you very little about this patient's condition or well-being.d. the patient's skin temperature and color will likely be warm and red.my answer is: a. to determine skin temperature, place the back of your hand against the patient's skin. using the back of the hand to check for temperature rather than the palm is more effective because the back of the hand has more nerves that can feel and transmit the temperature than the palm.