LESSON 1 Flashcards
Allows manipulation of the environment, locomotion, and facial expression; maintains posture; produces heat.
Muscular System
Protects and supports body organs; provides a framework the muscles use to cause movement; blood cells are formed within bones; stores minerals.
Skeletal System
Forms the external body covering; protects deeper tissue from injury; synthesizes Vitamin D; location of sensory receptors(pain, pressure,etc.) and sweat and oil glands
Integumentary System
Fast-acting control system of the body; responds to internal and external changes by activating appropriate muscles and glands.
Nervous System
Fast-acting control system of the body; responds to internal and external changes by activating appropriate muscles and glands.
Nervous System
Glands secrete hormones that regulate processes such as growth, reproduction, and nutrient use by body cells.
Endocrine System
Blood vessels transport blood, which carries oxygen, nutrients, hormones, carbon dioxide, wastes, etc.; the heart pumps blood
Cardiovascular System
Blood vessels transport blood, which carries oxygen, nutrients, hormones, carbon dioxide, wastes, etc.; the heart pumps blood
Cardiovascular System
Picks up fluid leaked from blood vessels and returns it to blood; disposes of debris in the lymphatic stream; houses white blood cells involved in immunity.
Lymphatic System
Keeps blood constantly supplied with oxygen and removes carbon dioxide; the gaseous exchanges occur through the walls of the air sacs of the lungs
Respiratory System
Eliminates nitrogen-containing wastes from the body; regulates water, electrolyte, and acid-base balance of the blood.
Urinary System
Produced sperm and male hormones
Testes
Produced eggs and female hormones
Ovaries
Female breasts produce milk to nourish the newborn
Mammary Glands
Breaks food down into absorbable nutrients that enter the blood for distribution to body cells; indigestible foodstuffs are eliminated as feces
Digestive System
Chemicals used for energy and cell building include carbohydrates, proteins, lipids, vitamins, and minerals
Nutrients
Required for chemical reactions made available by the cooperation of the respiratory and cardiovascular systems
Oxygen
Required for chemical reactions made available by the cooperation of the respiratory and cardiovascular systems
Oxygen
60 to 80 percent of body weight
Most abundant chemical in the human body provides fluid base for body secretions and excretions
Water
37C (98.6F)
Below this temperature, chemical reactions slow and stop
Above this temperature, chemical reactions proceed too rapidly
Normal body temperature
Must be appropriate for gas exchange
Atmospheric pressure
Takes in nutrients, digest them (part of metabolism), and excretes unabsorbed matter (feces)
Digestive system
Takes in oxygen, which is required for metabolism, and excretes carbon dioxide.
Respiratory System
Excretes nitrogen containing wastes and excess ions
Urinary System
Protects the body as a whole from the external environment by maintaining boundaries.
Integumentary system
Houses the spinal cord
Spinal cavity
Houses the brain
Cranial Cavity
Protected by the vertebrae
Spinal Cavity
Protected by the skull
Cranial cavity
Fundamental units of matter
Elements
How many percent of the body is made from four Elements
96%
What is the four elements
Oxygen
Carbon
Hydrogen
Nitrogen
Most common; 65% of the body’s mass
Oxygen
Characteristics of living organisms
Sum of total of all chemical reactions to maintain health and life
Metablosim