BIOL 271 Lecture Notes - Simple Squamous Epithelium, Hyaline Cartilage, Epithelium
Document Summary
Respiratory system anatomy upper respiratory tract superior to vocal cords lower respiratory tract inferior to vocal cords. Nose: external portion nasal bones and hyaline cartilage covered with skin, lined with mucous membrane openings called external nares cavity within the skull inferior to nasal bone, superior to mouth functions: warms, moistens air. Nose: internal portion roof formed by ethmoid and sphenoid bones. Paranasal sinuses cavities in the frontal, sphenoid, ethmoid, and maxillary bones lighten skull gives resonance to voice. Vocal cords ventricular fold false vocal cord vocal fold true vocal cord inferior to false cords attached to arytenoid cartilages. The bronchial tree consists of primary bronchi and 13 generations of their branches. 300,000 bronchioles (smallest branch) in each lung trachea primary bronchi secondary bronchi tertiary bronchi. Pleural membranes visceral: covers outer surface of lungs parietal: lines ribcage, covers diaphragm pleural cavity: space between visceral and parietal pleura.
