12) ) 12) Which of the following directly require ATP in skeletal muscle contraction? (Choose all that apply) A) Shiftin

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12 12 Which Of The Following Directly Require Atp In Skeletal Muscle Contraction Choose All That Apply A Shiftin 1 (52.73 KiB) Viewed 53 times

12) ) 12) Which of the following directly require ATP in skeletal muscle contraction? (Choose all that apply) A) Shifting of tropomyosin by troponin B) Release of tropomyosin blocking troponin C) Restoring membrane potentials back to resting potentials D) Release of Cat+ from SR E) Binding Cat+ to the sarcomere F) Return of Cat to the SR G) Activation of the DHP receptor I H) Release of myosin head from actin 13) 13) One of the integration centers controlling the autonomic nervous system is the medulla oblongata. Which of the following is the best description of the antagonistic control exhibited by the ANS? A) Two different interneurons leaving the medulla, one traveling to the autonomic trunk ganglia and another traveling all the way to the target organ B) One interneuron leaving the medulla, and either releasing norepinephrine at the autonomic trunk ganglia or releasing Ach at the target organ C) One interneuron leaving the medulla, traveling to either the thoracic spinal cord gray matter or traveling all the way to the target organ. D) Two different interneurons leaving the medulla, one traveling to the thoracic spinal cord gray matter and another traveling to the cranial nerve nucleus of the vagus nerve. 14) 14) Blood pressure at the glomerulus drives filtration, and this pressure is kept at a low enough pressure under normal conditions so as to not damage the delicate capillaries of the glomerulus. What is the major reason that the hydrostatic blood pressure starts so much lower than the mean arterial pressure? A) capsular pressure B) restricted flow through the renal artery C) colloid osmotic pressure D) massive branching of the renal blood supply inside the kidney 15) - 15) Which of the following is NOT a method of blood pressure control at the arterioles? A) Sympathetic reflex signalling B) Local signalling (paracrine) C) Elastic recoil of vessels D) Various hormonal signalling