A&P Ch. 2 Chemistry, Matter, & Life Elements Essential for Human Life

21 cards   |   Total Attempts: 182
  

Cards In This Set

Front Back
Element: Oxygen
Symbol: O
Atomic Number: 8
Approximate Percent by Human Body by Weight: 65.0

Importance: Required for cellular metabolism; component of water; present in most organic compounds
Element: Carbon
Symbol: C
Atomic Number: 6
Approximate Percent of Human Body by Weight: 18.5

Importance: Component of all organic compounds

Element: Hydrogen
Symbol: H
Atomic Number: 1
Approximate Percent of Human Body by Weight: 9.5

Importance: Present in most organic compounds; component of water
Element: Nitrogen
Symbol: N
Atomic Number: 7
Approximate Percent of Human Body by Weight: 3.3

Importance: component of all proteins, phospholipids, and nucleic acids.
Element: Calcium
Symbol: Ca
Atomic Number: 20
Approximate Percent of Human Body by Weight: 1.5

Importance: Component of bones and teeth; important in muscle contraction, nerve impulse conduction and blood clotting.
Element: Phosphorus
Symbol: P
Atomic Number: 15
Approximate Percent of Human Body by Weight: 1.0

Importance: Component of phospholipids, nucleic acids, and adenosine triphosphate; important in energy transfer.

Element: Potassium
Symbol: K
Atomic Number: 19
Approximate Percent of Human Body by Weight: 0.4

Importance: Principal cation inside cells; important in muscle contraction and nerve impulse conduction.
Element: Sulfur
Symbol: S
Atomic Number: 16
Approximate Percent of Human Body by Weight: 0.3

Importance: Component of most proteins.

Element: Sodium
Symbol: Na
Atomic Number: 11
Approximate Percent of Human Body by Weight: 0.2

Importance: Principal cation in fluid outside cells; important in muscle contraction and nerve impulse conduction.
Element: Chlorine
Symbol: Cl
Atomic Number: 17
Approximate Percent of Human Body by Weight: 0.2

Principal anion in fluid outside cells; important in fluid balance.
Element: Magnesium
Symbol: Mg
Atomic Number: 12
Approximate Percent of Human Body by Weight: 0.1

Importance: Part of many important enzymes; necessary for bones and teeth.
Element: Fluorine
Symbol: F
Atomic Number: 9
Approximate Percent of Human Body by Weight: trace

Importance: Aids in development of teeth and bones.

Element: Chromium
Symbol: Cr
Atomic Number: 24
Approximate Percent of Human Body by Weight: trace

Importance: Aids in carbohydrate metabolism
Element: Manganese
Symbol: Mg
Atomic Number: 25
Approximate Percent of Human Body by Weight: trace

Importance: Necessary for carbohydrate metabolism and bone formation.
Element: Iron
Symbol: Fe
Atomic Number: 26
Approximate Percent of Human Body by Weight: trace

Importance: Component of hemoglobin; part of many enzymes.