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The US Institute of Medicine (IOM) established Recommended Dietary Allowances (RDAs) for calcium in 1997 and updated those values in 2011. [6] See table. The European Food Safety Authority (EFSA) uses the term Population Reference Intake (PRIs) instead of RDAs and sets slightly different numbers: ages 4–10 800 mg, ages 11–17 1150 mg, ages 18–24 1000 mg, and >25 years 950 mg. [10]
The heart is a muscular organ found in humans and other animals.This organ pumps blood through the blood vessels. [1] Heart and blood vessels together make the circulatory system. [2]
The sinoatrial node (SA node) is the primary pacemaker of the heart. It is a region of cardiac muscle on the wall of the upper right atrium near to the superior vena cava entrance.
In mammals, invertebrates and most fish, [1] [2] the anus (pl.: anuses or ani; from Latin, 'ring' or 'circle') is the external body orifice at the exit end of the digestive tract (), i.e. the opposite end from the mouth.
Sol Invictus (Classical Latin: [ˈsoːɫ ɪnˈwɪktʊs], "Invincible Sun" or "Unconquered Sun") was the official sun god of the late Roman Empire and a later version of the god Sol.
Economy. tax cuts; tariffs; China trade war; farmer bailouts; Environment. Paris withdrawal; Foreign policy. America First; Saudi Arabia arms deal; Iran nuclear deal ...
Poliomyelitis (/ ˌ p oʊ l i oʊ ˌ m aɪ ə ˈ l aɪ t ɪ s / POH-lee-oh-MY-ə-LY-tiss), commonly shortened to polio, is an infectious disease caused by the poliovirus. [1] Approximately 75% of cases are asymptomatic; [5] mild symptoms which can occur include sore throat and fever; in a proportion of cases more severe symptoms develop such as headache, neck stiffness, and paresthesia.
The term "penicillin" is defined as the natural product of Penicillium mould with antimicrobial activity. [8] It was coined by Alexander Fleming on 7 March 1929 when he discovered the antibacterial property of Penicillium rubens. [9]