The infantry brigade combat team, as of 2014, contains 4,413 soldiers and is organized around three battalions of infantry. Each type of brigade (light infantry, air assault, or airborne) has the same basic organization.
2.1 Structure and function of the outer and middle ear. Figure 1 is a diagram of the human ear. The outer ear consists of the visible part of the ear or pinna, the external auditory canal (meatus) , and the tympanic membrane (tympanum) or eardrum.The human pinna is formed primarily of cartilage and is attached to the head by muscles and ligaments.igure 1 is a diagram of the human ear. The outer ear consists of the visible part of the ear or pinna, the external auditory canal (meatus) , and the tympanic membrane (tympanum) or eardrum.
Ear Anatomy. The external parts of the ear include the pinna, which is the outer, cartilage portion of the ear. This projection of cartilage that grows from the scalp is surrounded by muscles that control functions such as talking, chewing and swallowing.ar Anatomy. The external parts of the ear include the pinna, which is the outer, cartilage portion of the ear. This projection of cartilage that grows from the scalp is surrounded by muscles that control functions such as talking, chewing and swallowing.