I would say A. CcSs ( sorry if it’s wrong)
Answer:
<h2>Ear has three main parts; outer most part is called outer ear, middle one is as middle ear and innermost as inner ear.
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Explanation:
1. Outer Ear: Pinna (the outer, funnel-like part), Ear Canal (Conducts sound vibrations from the pinna to the tympanic membrane), and Tympanic Membrane.
2. Middle Ear: Ossicles (Tiny bones that amplify sound waves), Malleus, Tensor Tympani, Incus (Connects the Malleus to the Stapes; receives vibrations from the Malleus and looks like an anvil), Stapes, Stapedius, Oval Window (Receives vibrations from the Stapes and is the flexible opening to the cochlea).
3. Inner Ear: Cochlea (The main structure in the inner ear; tiny coiled structure); Tympanic Canal, Vestibular Canal, Basilar Membrane, Cochlear Partition , Round Window Organ of Corti.
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Route of Sounds: External environment → Collected by the pinna → Through the ear canal → Vibrates the Tympanic Membrane → Vibrates the ossicles → Vibrates the Oval Window → Sends “Traveling Waves” through the Vestibular Canal → Pressure released by Round Window if necessary → Inner and Outer hair cells transduce the vibrations.
<span>Answer: Aerobic bacteria cause an infection on the surface of the skin, and anaerobic bacteria cause an infection in a heart muscle.</span>
An aerobic bacteria can survive and grow in a oxygenated environment. A perfect environment is the skin because it's in contact with a lot of oxygen.
On the other hand, an anaerobic bacteria cannot grow in the presence of oxygen. So for them to cause an infection, they need to be in a place without this gas, just like the heart which a deep tissue.
