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.
Pinna can refer to: 1  Pinna (anatomy) , the outer part of the ear-also referred to as the auricle. 2  Pinna (genus) , a genus of bivalve molluscs also known as pen shells.3  In botany the pinnae are the divisions of a compound leaf or frond; Pinnation#Plants or Frond#Pinnate fronds.inna can refer to: 1  Pinna (anatomy) , the outer part of the ear-also referred to as the auricle. 2  Pinna (genus) , a genus of bivalve molluscs also known as pen shells.