QUESTIONS WITH ANSWERS GRADED A+
◉ Transverse Tubules. Answer: Rapidly conduct action potentials to the
interior of the muscle fiber
◉ Adrenal Medulla. Answer: Source of catecholamines, modified
sympathetic ganglion, and releases epinephrine and norepinephrine into
the blood
◉ Titin Protein. Answer: Stabilize the position of the contractile
filaments
◉ Na+ Channel. Answer: The binding of ACh to its receptor at the
neuromuscular junction causes it to open
◉ Latent Period. Answer: The brief period of time between the
beginning of the action potential in the muscle and the beginning of
contraction
◉ High Force Crossbridges Form. Answer: Calcium must bind to
troponin which moves tropomyosin