II96 



A MANUAL OF ANATOMY 



the integument over the convexity of the concha. The outer 

 surface is supphed by two cutaneous nerves, as follows: the 

 auriculo-temporal nerve supplies the upper two-thirds, and the 

 great auricular supplies the lower third. The motor nerve of the 

 intrinsic muscles is, as stated, the facial nerve. 



The Nose. 



The nose, as it appears upon the face, presents a root, situated 

 belo\y the glabella of the frontal bone; a tip, or point, situated 

 inferiorly; and a dorsum, which occupies an intermediate position. 

 The upper part of the dorsum is known as the bridge of the nose. 

 At the lower part of the nose there are the openings of the nostrils, 

 or anterior nares. The outer margin of each nostril is slightly 

 prominent and curved, and is called the ala. The nostrils are 

 separated from each other by a septum, called the columella nasi, 



Nasal Bone 



\\ _:.„Nasal Process of Superior 

 Maxillary Bone 

 ^\NV;... Upper Lateral Cartilage 

 2 Cartilage of Septum 



.linor Cartilages 

 Subcutaneous Fat 



Cartilage of Aperture 



Fig. 487. — The Cartilages of the Nose (Anterior View) (Arnold). 



which, as well as the ala, is composed of fibrous tissue and skin. 

 Within the circumference of each nostril there are several stout 

 hairs or vibrissa. 



The superficial or facial aspect of the nose derives its arteries 

 from (i) the lateral nasal and angular branches of the facial, and 

 (2) the nasal branch of the ophthalmic. 



The nerves are derived from the nasal and infra-orbital nerves, 

 the branches from the nasal being the infratrochlear and the terminal 

 cutaneous offsets. 



The cutaneous lymphatics of the root of the nose pass to the super- 

 ficial parotid, or anterior auricular, lymphatic glands. Those from 

 the greater part of the nasal integument pass to the submaxillary 

 lymphatic glands, the superficial facial glands forming gland- 

 stations in their path. 



The framework of the nose is both osseous and cartilaginous. 



