KIN 201 1st Edition Lecture 4I. Thoracic wall: a. Body articulation i. Intervertebral (later with back and spine)ii. Costovertebraliii. Sternocoastaliv. Sternoclavicular (later with upper extremely)v. Costochondrialb. Muscles of Thoracic Walli. Intercoastal muscles:ii. External intercostal muscle:iii. Internal intercostal muscle: are deep to our external intercostaliv. TranversusthoracisII. Diaphragm:a. Forced inspiration: inhaling air thoracic goes upb. Food expiration: exhale thoracic goes downc. Motion of ribs: imagine a bucket handled. Respiration muscle: Diaphragm (involuntary) e. Muscle of Inspiration: external intercostali. Muscle of Expiration:ii. Internal intercostaliii. All muscles are skeletal musclesIII. Breasts:a. Bulk of the breast tissue is adipose tissue interspersed with connective tissueb. Breast ducts comprise only about 10% of breast massc. Mammary glands responsible for milk productionIV. Thoracic cavity and viscera:a. Pulmonary cavities x2b. 2 lateral compartments containing lungs & pleuraec. Mediatinumd. Central compartment containing heart, great vessel, tracheaV. Pleurae:a. Allows for movement of lung tissue (reduces friction)b. Visceral pleura (covers the lung)c. Parietal pleura (lines pulmonary cavity)VI. Lungs:These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.a. Vital organ of respiration- oxygenate bloodb. Right lung: 3 lobesc. Left lung: 2 lobesd. Trachea & Bronchii. Trachea bifurcates into a right and left bronchusii. Right & Left Bronchi enters lungs R/L Hilumiii. Bronchial tree ends at Aveoli where O2 exchanges occurse. Vasculature of lungsi. Transmits blood b/w heart and lungsii. Pulmonary artery: heart to the lungs (deoxygenated blood)iii. Pulmonary veins: lungs to the heart (oxygenated)iv. Mediastinum: covered by pleura, contains all thoracic viscera except lungs, highly