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88 Cards in this Set
- Front
- Back
Anatomy |
the study of the structure and shape of the body and its parts |
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Gross anatomy |
large and easy to view |
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Microscopic anatomy |
too small to see with the naked eye |
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"ana" |
apart |
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"tomy" |
to cut |
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Physiology |
the study of how the body and its parts work |
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"physio" |
nature |
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"ology" |
study of |
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Why would you have a hard time understanding physiology if you didn't also understand anatomy? |
anatomy provides specialized structures for the physiology to happen |
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What are the 6 levels of complexity? |
chemical, cellular, tissue, organ, organ system, and organismal |
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Chemical level |
atoms are the building blocks of molecules |
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Cellular level |
cells are made up of molecules |
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Tissue level |
tissues are made up of different types of cells |
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Organ level |
organs are made up of different types of tissues |
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Organ system level |
organ systems are made up of different organs that work together closely |
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Organismal level |
human organisms are made up of many organ systems |
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What are the eleven organ systems? |
integumentary, skeletal, muscular, lymphatic, respiratory, digestive, nervous, endocrine, cardiovascular, urinary, and reproductive |
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Integumentary example |
skin |
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Integumentary functions |
protection, sweat and oil glands, vitamin D |
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Skeletal examples |
cartilage, joints, and bones |
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Skeletal functions |
protects & supports organs, frame for muscles, blood cells, and stores minerals |
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Muscular examples |
skeletal muscles |
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Muscular functions |
allows manipulation of the environment, movement, produces heat |
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Lymphatic examples |
thoracic duct, lymph nodes, and lymphatic vessels |
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Lymphatic functions |
return fluid to blood vessels, highway for blood cells |
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Respiratory examples |
nasal cavity, pharynx, larynx, trachea, bronchus, and lungs |
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Respiratory functions |
oxygen in, carbon dioxide out |
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Digestive examples |
oral cavity, esophagus, stomach, intestines, rectum, and anus |
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Digestive functions |
breaks down food, eliminates undigestible food |
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Nervous examples |
brain, sensory receptor, spinal cord, and nerves |
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Nervous functions |
fast-acting control system of the body, responds to external stimuli |
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Endocrine examples |
pineal, pituitary, thyroid, thymus, adrenal, pancreas, testis, and ovary |
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Endocrine functions |
secrete hormones |
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Cardiovascular examples |
heart and blood vessels |
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Cardiovascular functions |
transport materials, pump blood |
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Urinary examples |
kidney, ureter, bladder, urethra |
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Urinary functions |
eliminates nitrogenous wastes from the body, regulates water and electrolytes |
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Reproductive examples (male) |
seminal vesicles, prostate gland, penis, vas defrens, testis, and scrotum |
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Reproductive examples (female) |
mammary gland, uterine tube, uterus, and vagina |
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Reproductive functions |
offspring |
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Receptor |
type fo sensor that monitors the environmental variables and responds to stimuli |
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Where are pain sensors located? |
embedded in your skin |
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Control center |
determines the set point for a variable; analyses the input and determines the output |
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Effector |
responds to the stimulus |
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Positive feed back |
enhance the variable |
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Negative feed back |
inhibit the variable |
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What are the four most common elements in the body? |
oxygen, carbon, hydrogen, and nitrogen |
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% Oxygen? |
65% |
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% Carbon? |
18.5% |
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% Hydrogen? |
9.5% |
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% Nitrogen? |
3.2% |
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Oxygen |
component of organic & inorganic molecules; gas - essential to cellular repiration |
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Carbon |
primary element in all organic compounds (proteins, lipids, carbs, and nucleic acids) |
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Hydrogen |
found in most organic molecules; ion - influence the pH of body fluids |
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Nitrogen |
component of proteins and nucleic acids |
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How much of the body is consumed by the four most common elements? |
96.1% |
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% Calcium? |
1.5% |
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% Phosphorus? |
1% |
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% Potassium? |
.4% |
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% Sulfur? |
.3% |
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% Sodium? |
.2% |
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Calcium |
salt - found in bones and teeth; ion - necessary for muscle contraction, nerve impulses, and blood clotting |
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Phosphorus |
salt - found in bones and teeth; present in proteins and nucleic acids; essential component of ATP |
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Potassium |
ion - necessary for nerve impulses and muscle contraction |
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Sulfur |
component of proteins |
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Sodium |
ion - important for water balance, nerve impulses, and muscle contractions |
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% Chlorine? |
.2% |
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Chlorine |
most abundant extracellular ion |
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% Magnesium? |
.1% |
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Magnesium |
present in bones; important for enzyme action and metabolism |
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% Iodine? |
.1% |
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Iodine |
needed for functional thyroid hormones |
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% Iron? |
.1% |
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Iron |
component of functional hemoglobin (molecule for transporting oxygen); important for some enzymes |
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Biochemestry |
chemical composition of living matter |
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Two classes of compounds |
inorganic and organic |
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Inorganic compounds |
typically lack carbon, small simple molecules, and contain salt, oxygen, & methane |
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Organic compounds |
contain carbon, usually large, and covalently bonding |
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Examples of inorganic compounds |
water, salts, acids, and bases |
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Water |
2/3 of our body weight |
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What makes water so important? |
high heat capacity, polarity/solvent properties, chemical reactivity, and cushioning |
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High heat capacity |
can absorb and release large amounts of heat before the temperature changes dramatically |
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What is good about high heat capacity? |
it prevents major changes in temperature (sun exposure, cold winds, and exercise) |
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Polarity/ solvent properties |
water is an excellent solvent because it is polar |
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Solvent |
bigger substance |
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Solute |
being dissolved |
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Cushioning |
water helps make up the fluid that cushions your brain (cerebrospinal fluid); helps cushion fetus during development of the womb |
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Salt |
ionic compound, dissociate in body fluids, ions vital to body function |