Answer and Explanation:
In rest, attraction strengths between myosin and actin filaments are inhibited by the tropomyosin. When the muscle fiber membrane depolarizes, the action potential caused by this depolarization enters the t-tubules depolarizing the inner portion of the muscle fiber. This activates calcium channels in the T tubules membrane and releases calcium into the sarcolemma. At this point, tropomyosin is obstructing binding sites for myosin on the thin filament. When calcium binds to the troponin C, the troponin T alters the tropomyosin by moving it and then unblocks the binding sites. Myosin heads bind to the uncovered actin-binding sites forming cross-bridges, and while doing it ATP is transformed into ADP and inorganic phosphate which is released. Myofilaments slide impulsed by chemical energy collected in myosin heads, producing a power stroke. The power stroke initiates when the myosin cross-bridge binds to actin. As they slide, ADP molecules are released. A new ATP links to myosin heads and breaks the bindings to the actin filament. Then ATP splits into ADP and phosphate, and the energy produced is accumulated in the myosin heads, which starts a new binding cycle to actin. Z-bands are then pulled toward each other, thus shortening the sarcomere and the I-band, and producing muscle fiber contraction.
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Answer: runoff is like when rain and water drains away
Explanation:
Trauma Glasgow 7 is caused by failure to recognize and control the amount of haemorrhage. Immediate priority which nurse takes is to manage large volume of blood loss. Assessment of airway stability and patency should be performed and airway management intuited should be there as needed unless the patient is in cardiac.
Primary survey is the initial management and assessment of trauma patient. The primary purpose of the pivotal study is to treat actual and detect life threats and prevent complication from the injury. The time the patient arrives at the emergency department, full non-invasive monitoring should be applied to the patient.
The primary survey which is taken to the trauma patient include ABCDE
Airway. It is to check for any airway obstruction.
Breathing. Check for haemothorax.
Circulation. Check for circulation of blood.
Disability.
<span>Exposure</span>
Because alpha ray can penatrate the body deeper than other x rays and do more damage
