Cell Structure and Function Flashcards
THE HUMAN BODY CAN BE BROKEN DOWN INTO 6 LEVELS (BODY ORGANIZATION)? WHAT ARE THE 6 LEVELS?
- CHEMICAL
- CELLULAR
- TISSUE
- ORGAN
- SYSTEM
- ORGANISM
WHAT ARE THE MOST ABUNDANT ELEMENTS WITHIN THE BODY AND WHAT ARE THEIR PERCENTAGES?
*There are 4 of them.
OXYGEN (65%)
CARBON (18.5%)
HYDROGEN (9.5%)
NITROGEN (3.2)
IN BODY ORGANIZATION, WHAT IS THE DEFINITION OF THE ‘CHEMICAL’ LEVEL?
CHEMICAL ELEMENTS COMPOSED OF ATOMS WHICH MAY BE BOUND TOGETHER TO FORM MOLECULES.
IN BODY ORGANIZATION, WHAT IS THE DEFINITION OF THE ‘CELLULAR’ LEVEL? ABOUT HOW MANY CELLS ARE THERE IN THE BODY?
BASIC STRUCTURAL AND FUNCTIONAL COMPONENTS OF LIFE.
75-100 TRILLION CELLS
HOW MANY DIFFERENT TYPES OF CELLS ARE THERE IN THE HUMAN BODY?
200-250 TYPES OF CELLS
CELLS ARE COMPOSED OF _________ AND MUST _________ IN ORDER TO SURVIVE.
- PROTOPLASM
2. METABOLIZE
IN BODY ORGANIZATION, WHAT IS THE DEFINITION OF THE ‘TISSUE’ LEVEL?
AGGREGATIONS OF SIMILAR CELLS THAT PERFORM ‘SPECIFIC’ FUNCTIONS.
WHAT ARE THE ‘FOUR’ BASIC TYPES OF ‘TISSUES’ IN THE HUMAN BODY?
- EPITHELIAL
- CONNECTIVE
- MUSCULAR
- NERVOUS
‘EPITHELIAL’ TISSUE IS ALSO KNOWN AS WHAT?
SURFACE-COVERING TISSUE
‘CONNECTIVE’ TISSUE IS ALSO KNOWN AS WHAT?
SUPPORTING TISSUE
‘MUSCULAR’ TISSUE IS ALSO KNOWN AS WHAT?
CONTRACTING TISSUE
‘NERVOUS’ TISSUE IS ALSO KNOWN AS WHAT?
CONDUCTION TISSUE
IN BODY ORGANIZATION, WHAT IS THE DEFINITION OF THE ‘ORGAN’ LEVEL?
AGGREGATION OF TWO OR MORE ‘TISSUES’ INTEGRATED TO PERFORM A ‘PARTICULAR FUNCTION’.
ORGAN VARY IN _____ AND _______
- SIZE
2. FUNCTION
TRUE OR FALSE:
The heart, spleen, skin, ovary, and each bone of the body are considered ‘ORGANS’.
TRUE
HEART, SPLEEN, SKIN, OVARIES AND BONES ARE CONSIDERED ORGANS.
IN BODY ORGANIZATION, WHAT IS THE DEFINITION OF THE ‘SYSTEM’ LEVEL?
VARIOUS ORGANS HAVING SIMILAR OR RELATED FUNCTIONS.
WHAT ARE SOME EXAMPLES OF THE ‘SYSTEM’ LEVEL IN ‘BODY ORGANIZATION’?
(*There are 10 of them in the packet)
- CIRCULATORY
- RESPIRATORY
- NERVOUS
- DIGESTIVE
- URINARY
- REPRODUCTIVE
- MUSCULAR
- SKELETAL
- IMMUNE
- ENDOCRINE
IN BODY ORGANIZATION, WHAT IS THE DEFINITION OF THE ‘ORGANISM’ LEVEL?
LIVING ‘INDIVIDUAL’ COMPOSED OF ALL OF THE PARTS OF THE BODY FUNCTIONING TOGETHER.
WHAT IS THE SURVIVAL OF AN ORGANISM DEPENDENT UPON?
NORMAL FUNCTIONING OF EACH OF ITS PARTS.
WHAT ARE THE CHARACTERISTICS OF AN ‘ENDOCRINE’ GLAND? (*THERE ARE 2 OF THEM)
- DUCTLESS
2. SECRETE HORMONES INTO THE BLOOD
WHAT ARE THE CHARACTERISTICS OF AN ‘EXOCRINE’ GLAND?
WHERE ARE TWO PLACES WHERE THEY CAN BE FOUND IN THE BODY?
DUCTS THAT LEAD TO AN EXTERNAL ENVIRONMENT.
EXAMPLES:
- SWEAT GLANDS
- PANCREAS (HAS BOTH TYPES)
WHAT IS ‘HOMEOSTASIS’ DEFINED AS? HOW DOES IT WORK?
MAINTAINING A DYNAMIC CONSTANCY
ALL OF THE BODY SYSTEMS CONTRIBUTE TO MAINTAINING A CONSTANT INTERNAL ENVIRONMENT.
HOW DOES THE URINARY SYSTEM MAINTAIN ‘HOMEOSTASIS’?
*THERE ARE 4 WAYS
- REMOVES WASTE FROM BLOOD
- REGULATES CHEMICAL COMPOSITION OF BLOOD
- REGULATES VOLUME OF BLOOD
- REGULATES ELECTROLYTE BALANCE OF BLOOD
HOW DOES THE ‘DIGESTIVE SYSTEM’ MAINTAIN ‘HOMEOSTASIS’?
BREAKS DOWN AND ABSORBS FOOD MATERIALS INTO THE BLOOD TO PROVIDE NUTRIENTS FOR CELLULAR METABOLISM.