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module 7

Horizontales
outermost and largest of the three small bones in the middle ear
It is usually collapsed and closed, but opens during swallowing or yawning to allow air from the nasopharynx into the tympanic cavity and equalize the pressure on either side of the tympanic membrane.
smallest skeletal muscle in the human body.
a highly vascularised flap of skin that forms the most inferior part of the auricle. It is non-cartilaginous.
What part of the ear is first affected by sound?
role is to dampen loud sounds, such as those produced from chewing, shouting, or thunder
It vibrates in response to sound waves received along the auditory canal.
After the brainstem, where does the sound travel for initial processing?
the middle ossicle and resembles an anvil or a bicuspid tooth
forms the outer, curved margin of the auricle
Verticales
usually attached to hair follicles and release a fatty substance, sebum, into the follicular duct and thence to the surface of the skin
an air-filled compartment surrounded by bone that is separated from the external ear
The hair cells near this area best detect low frequency sounds.
plays an important role in the protection of the ear canal against physical damage and microbial invasion
fibromuscular mass on either side of the mouth.
After the bones in the middle ear, where does the sound travel next?
smallest and most medial ossicle of the middle ear and takes its name from its resemblance to a stirrup.
Visible portion of the outer ear
What is the nerve called that sends the signal to the brainstem as the last step in the ear?
Towards what end of cochlea do hair cells hear higher pitch?