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Metabolic component: The third line of defense is slow, best measured by the base excess, [9] and mostly depends on the renal system which can add or remove bicarbonate ions (HCO − 3) to or from the ECF. [5] Bicarbonate ions are derived from metabolic carbon dioxide which is enzymatically converted to carbonic acid in the renal tubular cells.
The 3–3–5 defense can also be referred to as the 3–3 stack or the spread defense. It is one form of the nickel defense , a generic term for a formation with five defensive backs. Veteran college football defensive coordinator Joe Lee Dunn is widely credited with being the main innovator of the 3–3–5 scheme.
A diagram showing an I formation on offense and a 4-3 formation on defense In American football , the specific role that a player takes on the field is referred to as their "position". Under the modern rules of American football, both teams are allowed 11 players [ 1 ] on the field at one time and have "unlimited free substitutions", meaning ...
In the first line of defense, inhaled bacteria are trapped by mucus and are swept toward the pharynx and are swallowed. [1] Bacteria which penetrate the mucous layer are dealt with a second line of defense which includes antimicrobial peptides that are secreted by the surface epithelium of the respiratory tract which kill many strains of ...
Numbered 1, the fullback's primary role is the last line of defence, standing behind the main line of defenders.Defensively, fullbacks must be able to chase and tackle any player who breaks the first line of defence, and must be able to catch and return kicks made by the attacking side.
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Diagram of the Cover 3 defense. In Cover 3, the two corners and free safety each have responsibility for a deep third of the field, while the strong safety plays like a linebacker. [7] [8] [9] This coverage is generally considered to be a run stopping defense as it focuses on preventing big pass plays and stopping the run while giving up short ...