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401 - Confirm Physical Status
Section 2 - Cell Structure & Function
50
Nursing
Undergraduate 1
08/21/2013

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Term
ATOMS
Definition
THE SMALLES STABLE UNIT OF MATTER
Term
MOLECULES
Definition
A CHEMICAL STRUCTURE CONTAINING 2 OR MORE ATOMS THAT ARE HELD TOGETHER BY COVALENT CHEMICAL BONDS
Term
ORGANELLES
Definition
AN INTRACELLULAR STRUCTURE THAT PERFORMS A SPECIFIC FUNCTION OR GROUP OF FUNCTIONS
Term
CELLS
Definition
THE SMALLEST LIVING UNIT IN THE HUMAN BODY.

REGARDLESS OF TYPE, CELLS ARE COMPOSED MAINLY OF CARBON, HYDROGEN, NITROGEN OXYGEN & TRACE ELEMENTS.

ALL CELLS HAVE SAME BASIC PARTS & SOME COMMON ELEMENTS
Term
TISSUE
Definition
A COLLECTION OF SPECIALISED CELLS & CELL PRODUCTS THAT PERFORMS A SPECIFIC FUNCTION
Term
ORGAN
Definition
COMBINATION OF TISSUES THAT PERFORM COMPLEX FUNCTIONS
Term
BODY ORGAN SYSTEMS
Definition
CONSISTS OF ORGANS THAT INTERACT TO PERFORM A SPECIFIC RANGE OF FUNCTIONS, OFTEN IN A CO-ORDINATED FASHION TO MAINTAIN HOMEOSTASIS
Term
ORGANISMAL (organism - the living human being)
Definition
INDIVIDUAL LIFE FORM / BODY MADE UP OF ORGANS, ORGANELLES OR OTHER PARTS THAT WORKTOGETHER TO CARRY ON THE VARIOUS PROCESSES OF LIFE
Term
HOW MANY SYSTEMS EXIST IN THE HUMAN BODY
Definition
12 - SKELETAL, MUSCULAR, DIGESTIVE, GASTROINTESTINAL, REPRODUCTIVE, INTEGUMENTARY, LYMPHATIC, ENDOCRINE, RESPIRATORY, CARDIOVASCULAR, URINARY, NERVOUS,
Term
SKELETAL SYSTEM
Definition
ORGANS: BONES
FUNCTION: SUPPORTS & PROTECTS THE BODY
Term
MUSCULAR SYSTEM
Definition
ORGANS:
AXIAL = POSITION &
APPENDICULAR MUSCLES = SUPPORT / MOVE LIMBS

FUNCTION: GIVES MOVEMENT TO BODY
Term
DIGESTIVE SYSTEM
Definition
ORGANS: DIGESTIVE TRACT
GASTROINTESTINAL TRACT
STOMACH

FUNCTION: TAKES IN & ABSORBS NUTRIENTS & ELIMINATES WASTE
Term
NERVOUS SYSTEM
Definition
ORGANS: BRAIN & SPINAL CORD
FUNCTION: CONTROLS ACTIVITES OF BODY
Term
URINARY SYSTEM
Definition
ORGANS:
KIDNEY, UTERUS, BLADDER & URETHRA

FUNCTION: REMOVES WASTE FROM THE BLOOD, PRODUCES & ELIMINATES URINE
Term
REPRODUCTIVE SYSTEM
Definition
ORGANS:
FEMALE - OVARIES, UTERINE TUBES, UTERUS & VAGINA

MALE - DUCTUS, PROSTATE, BULBO UREATHERAL GLANDS, URETHRA, EPIDIDYMIS, GONADS, PENIS & SCROTUM

FUNCTION: TO PRODUCE, ALLOWS A NEW HUMAN BEINT TO BE BORN, FOR SEXUAL FULFILMENT & EXPRESSION OF SEXUALITY
Term
RESPIRATORY SYSTEM
Definition
ORGANS:
UPPER & LOWER REPIRATORY SYSTEM RIGHT & LEFT, TRACHEA, RIGHT & LEFT PLEURAL, BRONCHI, DIAPHRAGM, CLAVICAL

FUNCTION:GIVES THE BODY AIR TO SUPPLY OXYGEN TO THE CELLS THROUGH THE BLOD & ELIMINATES CARBOX DIOXIDE
Term
CARIOVASCULAR SYSTEM
Definition
ORGANS: HEART

FUNCTION: CARRIES FOOD, OXYGEN & WATER TO THE BODY CELLS & REMOVES WASTE
Term
ENDOCRINE SYSTEM
Definition
ORGANS:
ENDOCRINE GALANDULAR CELLS & NEURONS

FUNCTION: SECRETES HORMONES DIRECTLY INTO THE BLOD TO REGULATE BODY FUNCTION
Term
LYMPHATIC SYSTEM
Definition
ORGANS: TONSIL, THYMUS, SPLEEN, MUCOSA, APPENDIX, LYMPH NODES & DUCTS, LYMPHOID TISSUES & ORGANS

FUNCTION: PICKS UP FLUID LEAKED FROM BLOOD VESSELS & RETURNS IT TO BLOOD, DISPOSES OF DEBRIS IN THE LYMPHATIC STREAM HOUSES, WHITE BLOOD CELLS INVOLVED IN IMMUNITY.
Term
INTEGUMENTARY SYSTEM
Definition
ORGAN: SKIN

FUNCTION: PROVIDES FIRST LINE OF DEFENCE AGAINST INFECTION, MAINTAINS BODY TEMPERATURE, GETS RID OF WASTE SYSTHESISES VITAMIN D
Term
PLASMA MEMBRANE / CELL MEMBRANE
Definition
SEPARATES THE CELL CONTENTS, OR CYTOPLASM, FROM THE EXTRACELLULAR FLUID
Term
CYTOPLASM
Definition
MATERIAL BETWEEN THE PLASMA MEMBRANE & NUCLEAR MEMBBRANE; CELL CONTENTS
Term
NUCLEUS
Definition
CELLULAR ORGANELLE THAT CONTAINS DNA RNA & PROTEINS; IN THE CENTRAL NERVOUS SYSTEM, A MASS OR GRAY MATTER
Term
CYTOPLASMIC ORGANELLES - ENDOPLASMIC RETICULUM
Definition
Synthesise secretory products, store & transport substances inside a cell
Term
CYTOPLASMIC ORGANELLES - RIBOSOME
Definition
Synthesise Proteins
Term
CYTOPLASMIC ORGANELLES - GOLGI APPARATUS
Definition
Modify & Package Proteins
Term
CYTOPLASMIC ORGANELLES - LYSOSOME
Definition
Beak down large organic compounds, damaged organelles & pathogens (disease causing agent)
Term
CYTOPLASMIC ORGANELLES - MITOCHONDRIA
Definition
Produce 95% of CELLS ATP. Mitochondria are the cell's power producers. They convert energy into forms that are usable by the cell.
Term
CYTOPLASMIC ORGANELLES - CENTRIOLES
Definition
Organise microtubules to move chromosomes during cell division
Term
MEMBRANE TRANSPORT
Definition
Cells are bathed in extracellular fluid & require movement of nutrients & wastes across their membrane, the membrane needs to allow selective movement of molecules back & forth.
Term
DIFFUSION
Definition
Passive movement of molecules from regions of higher concentration towards regions of lower concentration
MOLECULES DISOLVE - eg, exchange of respiratory gases in the lungs
Term
OSMOSIS
Definition
The diffusion of water molecule across selectively permeable membrane. Movement occurs toward the higher solute concentration because that is where the concentration of water is lower, continues until concentration gradient is eliminated.
(MOVEMENT ACROSS AS REQUIRED - balancing)
eg, water moves across the cell membrane to correct imbalances in water concentration.
Term
FILTRATION
Definition
Movement of a fluid across a membrane whose pores restrict the passage of solutes on the basis of size.
eg; removal of wastes with the kidneys
Term
ACTIVE TRANSPORT
Definition
Molecules of ions are transported through cell membrane by other molecules.
eg; movement of glucose and amino acids through membranes
Term
PINOCYTOSIS
Definition
Membrane engulfs minute droplets of fluid from the surroundings (forms a vesicle)
eg; for substances of large molecular weight - protein molecules
Term
PHAGOCYTOSIS
Definition
Membrane engulfs solid particles from surroundings
eg; white blood cell membrane engulfs bacterial cell
Term
METABOLISM
Definition
Refers to all chemical reactions that occur in an organism. Chemical reactions within cells (cellular metabolism) provide energy needed to maintain homeostasis.
Term
CATABOLISM
Definition
Breakdown of organic substances in body
Term
ANABOLISM
Definition
Synthesis of new organic molecules
Term
REPRODUCTION
Definition
When a single celled organism divides to make two cells - meiosis.
Original Cell - Cell Division - Daughter Cells
Term
RESPONSE TO STIMULI
Definition
Environmental change that produces a change in cellular activities, often used to refer to events that alter the membrane potentials of excitable cells.
Term
THE MEMBRANE OF A CELL IS SAID TO BE
Definition
SEMI PERMEABLE
Term
THE SPREAD OF MOLECULES THROUGH AN AREA IS KNOW AS
Definition
DIFFUSION
Term
WATER MOLECULES DIFFUSE THROUGH THE CELL MEMRANE BY THE PROCESS OF
Definition
OSMOSIS
Term
THE PASSAGE OF SOLUTIONS THROUGH A MEMBRANE AS A RESULT OF MECHANICAL FORCE IS CALLED
Definition
FILTRATION
Term
THE CELL USES ENERGY TO MOVE SUBSTANCES ACROSS THE MEMBRANE IN A PROCESS CALLED
Definition
ACTIVE TRANSPORT
Term
SUBSTANCE THAT FILLS THE CELL IS
Definition
CYTOPLASM
Term
ORGANELLE THAT CONTROLS CELL FUNCTION IS
Definition
NUCLEUS
Term
THE OUTER COVERING OF THE CELL IS THE
Definition
CELL MEMBRANE
Term
CELL FUNCTIONS ARE CARRIED OUT BY SPECIALISTED STRUTURES CALLED
Definition
ORGANELLES
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