answer 3
trachea, alveoli, pulmonary capillaries, arteries
answer 2
A is your correct answer
Answer 1
The ear is made up of 3 parts, namely: 1. The external (“external”) ear, made up of the pinna and the auditory canal, 2. The middle ear, made up of the tympanic cavity and three ossicles, 3 The inner ear, composed of through semicircular canals, the utricle, the saccule and the cochlea. Hearing initially occurs by allowing the pinna of the ear to focus sound. Then, through the ear canal and the ossicles, the sound is sent to the fluid-filled eardrum, which begins to vibrate. The vibrations are sent to the snail component of the inner ear called the cochlea. The cochlea detects these vibrations and converts them into nerve impulses which will be interpreted by the brain, causing you to “hear” the sound.