Search results
Results from the WOW.Com Content Network
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 ...
French Gendarmes. The line formation was also used by certain types of cavalry. The Sassanid Persians, the Mamluks, and Muslim cavalry in India often used the tactics named "shower shooting". It involved a line of fairly well-armoured cavalrymen (often on armoured horses) standing in a massed static line or advancing in an ordered formation at the walk while loosing their arrows as quickly as ...
The President of the United States is, according to the Constitution, the Commander-in-Chief of the U.S. Armed Forces and Chief Executive of the Federal Government. The Secretary of Defense is the "Principal Assistant to the President in all matters relating to the Department of Defense", and is vested with statutory authority (10 U.S.C. § 113) to lead the Department and all of its component ...
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 ...
Russian anti-tank obstacles near the horizon, Kherson Oblast, May 2022. Dragon's teeth on the left, Czech hedgehogs on the right In Belgorod Oblast, defensive lines of dragon's teeth were constructed in October 2022 under the supervision of the Wagner Group along the Russia–Ukraine border, intended as a second line of defense alongside trenches and a trained militia in the event the ...
The second and third lines of defense operate by making changes to the buffers, each of which consists of two components: a weak acid and its conjugate base. [5] [13] It is the ratio concentration of the weak acid to its conjugate base that determines the pH of the solution. [14]
Interior lines [a] (as opposed to exterior lines) is a military term, derived from the generic term line of operation or line of movement. [1] The term "interior lines" is commonly used to illustrate, describe, and analyze the various possible routes (lines) of logistics, supply, recon, approach, attack, evasion, maneuver, or retreat of armed forces.
The tonsils are a set of lymphoid organs facing into the aerodigestive tract, which is known as Waldeyer's tonsillar ring and consists of the adenoid tonsil (or pharyngeal tonsil), two tubal tonsils, two palatine tonsils, and the lingual tonsils.