NSCA-CSCS Exam Chapter 1 Questions and Answers 100% Pass

NSCA-CSCS Exam Chapter 1 Questions and Answers 100% Pass A-Band overlapping actin and myosin acetylcholine Arrival of the action potential at the nerve terminal causes release of a neurotransmitter, ______, which diffuses across the neuromuscular junction. Once a sufficient amount is released, an action potential is generated across the sarcolemma, and the (muscle)fiber contracts. Actin Show up lighter under a microscope. Thin Filaments. In I band and A band. Contains myosin binding site Actin and Myosin contractile proteins in muscle Action potential the change in electrical potential associated with the passage of an impulse along the membrane of a muscle cell or nerve cell. All-or-none Principle the strength by which a nerve or muscle fiber responds to a stimulus is independent of the strength of the stimulus. If the stimulus exceeds the threshold potential, the nerve or muscle fiber will give a complete response; otherwise, there is no response. Alveolar Pressure the pressure in centimeters of water pressure (cmH2O) held within the alveoli of the lungs during inspiration. The pressure value is the difference from atmospheric pressure, which is considered zero when establishing the value. Alveoli where gases are exchanged in respiration. Aortic Valve prevents backflow from the aorta into the ventricles during ventricular relaxation (diastole) Arterial System Carries blood away from the heart Arteriole small branches of arteries that act as control vessels through which blood enters the capillaries.Play a major role in the regulation of blood flow to the extremeities. Artery Their function is to rapidly transport blood pumped from the heart. Atrioventricular (AV) Bundle conducts the electrical impulse to the ventricles Atrioventricular (AV) Node electrical impulses coming from the SA node are delayed slightly here before passing into the ventricles Atrioventricular (AV) Valves consists of the tricuspid and mitral valve and prevent the flow of blood from the ventricles back into the atria during ventricular contraction (systole). Atrium there are two of these, a right and a left. Their function is to deliver blood to another chamber of the heart. Bone Periosteum a specialized connective tissue covering all bones. Bradycardia fewer than 60 beats of the heart per minute Bronchi These come after the Trachea in the respiratory system and are known as second- generation respiratory passages Bronchiole These come after the Bronchi in the respiratory system and are known as an additional generation of respiratory passages Capillary their function is to exchange oxygen, nutrients, electrolytes, hormones, and other substances between the blood and the interstitial fluid in the various tissues in the body. Cross-bridge Globular heads that protrude away from the myosin filament at regular intervals. Depolarization the reversal of the membrane electrical potential, whereby the normally negative potential inside the membrane