FREE Registration for Biology online tutoring and homework help.

Respiratory System 3, Nervous System 1

Respiratory System III, Nervous System I: In this lecture, Professor Diamond begins with a review of the respiratory bronchile. She then continues to discuss the structure of the lungs including the trachea, hilum, primary bronchi, pulmonary arteries and veins, nerves, alveoli and diaphragm, as well as the parietal pleura and the visceral pleura. After building this foundation she describes the process of innervation and the firing of the phrenic nerve before moving into an introduction of the nervous system. Starting with an introduction of the three basic divisions of the nervous system, the central nervous system, the peripheral nervous system, and the automatic nervous system, Professor Diamond then discusses neurohistology starting with nerve cells and glial cells before describing the basic structure of the nerve cell including the cell body or soma, the nucleus, mitochondria, golgi, nissl substance, and neurotubules. Next, she explains nerve branches and the functions of the axon, axon hillock, and myelin. At the end of the lecture, she shows pictures of the various structures involved in respiration.