The trachea and its direct ramifications, the bronchi
The trachea is a rather rigid and constantly open tube, 10 to 12 cm- long and 11 to 18 mm. wide, which leaves the larynx at the level of the intervertebral disc between the sixth and seventh cervical vertebrae and extends to that of the disc between the fourth and fifth thoracic vertebrae. In the latter situation or in front of the fifth thoracic vertebra it divides into two branches, the bronchi, which form a right angle with each other. This division is called the tracheal bifurcation.
The femur
The femur is the largest long bone of the human body and consists of a superior extremity a shaft and an inferior extremity.
The larynx
The larynx is an irregular tubular dilatation of the respiratory tract proper which connects the pharynx with the trachea and transmits air to the actual respiratory passages.
Stomach
The stomach is a sac-like dilatation of the digestive tube intervening between the oesophagus and the intestine.
Nose (Nasus externus) anatomy - Anatomy of the nose
There may be recognized in the nose a base, which is directed downward, and a root, situated between the two orbits; the rounded anterior surface is directed forward and upward and is termed the dorsum, and it terminates in the tip of the nose, or apex nasi. The margins representing the lower borders of the base pass backward from the tip to form the alee, and they constitute the lateral boundaries of the nostrils (nares), which are separated from each other by the antero-inferior portion of the nasal septum, the membranous septum.
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