BIOS 252 A& P II Midterm Exam (Essay and Review and Question Answer) / BIOS252 A& P II Midterm Exam (Essay and Review and Question Answer)(LATEST)|ALL ANSWERS VERIFIED,100% CORRECT -Chamberlain College of Nursing

BIOS 252 A& P II Midterm Exam (Essay and Review and Question Answer) / BIOS252 A& P II Midterm Exam (Essay and Review and Question Answer)(LATEST)|ALL ANSWERS VERIFIED,100% CORRECT -Chamberlain College of Nursing 1. T Tubules are extensions of the _____ in skeletal muscle? 2. CN III innervates with of of the following muscle? 3. The brain and spinal chord are part of the ______ nervous system? 4. A wheelbarrow is an example of a _______ class lever? 5. The muscle contraction pulling on its insertion point, corresponds to what part of the lever system? 6. A synovial joint corresponds to what part of the lever stem? 7. When would voltage-gated Sodium channels open rapidly? 8. Which of the following muscle closes the lips? 9. Synergists prevent unwanted movements during an action, or aid the agonist during the movement. 10. EPSP stands for _________ 11. EPSPs occur when ______ 12. The Platysma muscle is a muscle of mastication 13. The type of muscle contraction where the muscle contracts but exhibits no change in length is called 14. Calcium is released from the SR when an action potential opens gated ion channels located in the 15. The neurotransmitter found at synapses between the motor neurons and human skeletal muscles, or at the neuromuscular junction is ________ 16. The neurotransmitters that function primarily in the CNS are dopamine and serotonin 17. A propagated change in the membrane potential of part of the cell membrane is an action potential 18. A chemical synapse is most likely to dominate which system? BIOS 252 Midterm Essay Questions Chapter 10 & 11 Q1. Identify and describe intracellular structures (organelles, myofilaments, ect.) of a muscle cell. Contrast skeletal, cardiac and smooth. Q2. Describe all phases of twitch. Q3. 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. Q4. 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) Q5. Differentiate between isotonic, isometric, eccentric and concentric contractions. Q6. Identify the muscles involved in relaxed and forced breathing and describe their role. Chapter 12 Q1. Describe the functional and structural classification of neurons. Q2. Identify and describe the major divisions of the nervous system. Q3. List and describe the function/location of all neuroglia cells Q4. Describe all steps of an action potential, including initiation by local potential. Q5. Understand the mechanism of IPSPs and EPSPs. Chapter 13 Q1. Explain the similarities and differences of a spinal withdrawal reflex and a crossed extensor reflex.