1 - Molecular and Cell Biology 32 Professor Andrew E...

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ILLEGAL and will These notes are copyrighted by the University of California and are for your personal use only. Sharing or copying these notes is illegal and could end note taking for this course Opening Announcements: There is a course website on bspace. You should be getting emails from bspace when there is an announcement about the course. There will be discussion sections starting this week today (Tuesday). Student: Can we sit in on a discussion if we had the Monday section this week. Professor: Yes. I do not have any control over the class rosters. People will be dropping and adding over the next few weeks so hopefully there will be enough room for everyone who wants to enroll. We will use the 10 th edition of the Stewart book for this class. Not a big difference between the 9th and 10 th edition. In the first chapter of the tenth, however, there has been an added section about stem cells. I therefore encourage you to get the 10 th edition. I am currently in the process of arranging office hours. They will probably be held sometime on Friday. Today’s Lecture: Homeostasis and Molecules Today’s lecture is designed to be an introductory broad overview of the course. Certain themes presented today will occur over and over again throughout the semester. Chapter 1: Introduction Key terms: tissues, organs, organ systems, negative feedback, homeostasis, insulin, glucagons, glucose, molecules of life. Tissues: similar cells that perform a single function. Classification: structure and function. Three types of muscle cells: 1) Skeletal muscle cells- -Voluntary conscious control mediates graded responses. We can consciously control the movement of these muscles. -Striated muscle in which actin and myosin have a specific pattern. -Every fiber is generated through the fusion of myoblasts so the muscle cells have multiple nuclei. 2) Cardiac Muscle Cells -Involuntary. We have no conscious control over these muscle cells. -Electrochemical impulses enervate cardiac tissue. -Made up of single cells that each have only one nuclei
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