BIO 235 Exam 3 Questions and Answers 100% Pass

BIO 235 Exam 3 Questions and Answers 100% Pass The end plate potential is generated by the influx of ______ into the motor end plate. - sodium (Na+) Acetylcholine is released from the synaptic terminus in response to ___ - An action potential arriving at the synaptic terminus The term "synaptic cleft" refers to ___ - The gap between the neuron and the muscle fiber. The sodium channels of the motor end plate are ___ - ligand-gated channels The end plate potential is ___ - local depolarization The channels that open in the sarcolemma surrounding the motor endplate and generate an action potential are - voltage-gated channels 2 100% Pass Guarantee Katelyn Whitman, All Rights The term, "propagate" when referring to an action potential means __ - spread The triad consists of - two terminal cisternae and a T tubule What is released from the sarcoplasmic reticulum (SR) in response to arrival of an action potential? - Ca2+ (Calcium) Hydrolysis of ATP is responsible for __ - recooking of the myosin heads The binding of ATP to myosin is responsible for - Release of the myosin heads from the actin active sites The release of ADP and Pi from myosin occurs during ___ - power stroke The power stroke - Pulls the thin filaments toward the M lines What are the three main types of muscle tissue? - skeletal, cardiac, smooth What are the five main functions of muscle tissue? - generate force (muscle tension) 3 100% Pass Guarantee Katelyn Whitman, All Rights create movement maintain posture stabilize joint generate heat and regulate the flow of materials through hollow organs. Define skeletal muscle tissue characteristics and properties - Made up of long, multinucleated cells arranged parallel to one another with striations Muscle cells are known as fibers due to length & appearance Contractions are voluntary Most are attached by connective tissue to skeleton;contraction can produce movement of body Define cardiac muscle tissue properties and characteristics. - Made up of short and highly branched cells with one or two nucle