Exam (elaborations) BIOS 252 MIDTERM EXAM UNIT 4 ESSAY QUESTION AND ANSWERS

BIOS 252 Midterm Exam Essay Question Chapter 10 and 11 Identify and describe intracellular structures (organelles, myofilaments, ect.) of a muscle cell. Contrast skeletal, cardiac and smooth. Describe all phases of Describe the major functions of the three types of muscles and the differences between them. Outline the sequence of physiological events of a twitch starting at the motor neurons and ending with movement. Describe a neuromuscular junction and identify all major components. Describe the connective tissue “packaging” of muscle. Differentiate between isotonic, isometric, eccentric and concentric contractions. Describe how skeletal muscles acting across synovial joints function as a lever system. Discriminate between 1st class, 2nd class and 3rd class levers in the human body(provide an example of each) Identify the muscles involved in relaxed and forced breathing and describe their role. Chapter 12 Identify the anatomy of a neuron Describe the functional and structural classification of neurons. Identify and describe the major divisions of the nervous system.