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Fibroblasts Are cells that secrete matrix proteins
Ground Substance Is the matrix of loose connective tissue
Endocrine System Hypothalamus, pituitary gland, adrenal gland, thyroid gland,
parathyroid gland, thymus, pancreas
Provide communication between cells of the body through the release of hormones in the
bloodstream
Nervous System Brain, Spinal Cord, Peripheral Nerves
Provide communication between cells through electrical in pluses and the release of
neurotransmitters in between small gaps in certain cells
Musculoskeletal System Skeletal Muscles, bones, tendons and ligaments
Support the body; allow voluntary movement of the body and facial expression.
Cardiovascular System Heart, Blood vessels, blood
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Transport molecules throughout the body in the bloodstream
Respiratory System Lungs, pharynx, Trachea, Bronchi
Bring oxygen into the body and expel carbon dioxide from the body
Urinary System Kidneys, ureters, Urinary bladder, urethra
Filters blood to regulate the acidity, blood volume, and ion concentration; eliminates wastes
Gastrointestinal System Mouth, esophagus, stomach, small intestines, large intestine,
liver, pancreas, gall bladder
Break down food and absorb it into the body-lumens are external
Reproductive System Gonads, reproductive tracts and glands
Generate offspring
Immune System White blood cells, Thymus, Lymph Nodes, Spleen, tonsils, adenoids
Defend the body agains pathogens and abnormal cells
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Integumentary System Skin
Protects the body from the external enviroment
Membrane Potential the difference in electrical potential or voltage across the cell
membrane
TBW By percent, 60/40/20 rule: 60% of the body is water: 40% of this is in the
Intracellular Fluid (ICF), and 20% is in the Extracellular Fluid (ECF).
ICF Fluid within cells. About 70% of total body water or 40% of the adults body weight
ECF Between the cells of tissues: interstitial fluid, plasma in blood vessels, and lymph in
lymphatic vessels
ICF vs. ISF Separated by cell membrane to retain gradients and cell potential