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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

Gross anatomy

large and easy to view

Microscopic anatomy

too small to see with the naked eye

"ana"

apart

"tomy"

to cut

Physiology

the study of how the body and its parts work

"physio"

nature

"ology"

study of

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

What are the 6 levels of complexity?

chemical, cellular, tissue, organ, organ system, and organismal

Chemical level

atoms are the building blocks of molecules

Cellular level

cells are made up of molecules

Tissue level

tissues are made up of different types of cells

Organ level

organs are made up of different types of tissues

Organ system level

organ systems are made up of different organs that work together closely

Organismal level

human organisms are made up of many organ systems

What are the eleven organ systems?

integumentary, skeletal, muscular, lymphatic, respiratory, digestive, nervous, endocrine, cardiovascular, urinary, and reproductive

Integumentary example

skin

Integumentary functions

protection, sweat and oil glands, vitamin D

Skeletal examples

cartilage, joints, and bones

Skeletal functions

protects & supports organs, frame for muscles, blood cells, and stores minerals

Muscular examples

skeletal muscles

Muscular functions

allows manipulation of the environment, movement, produces heat

Lymphatic examples

thoracic duct, lymph nodes, and lymphatic vessels

Lymphatic functions

return fluid to blood vessels, highway for blood cells

Respiratory examples

nasal cavity, pharynx, larynx, trachea, bronchus, and lungs

Respiratory functions

oxygen in, carbon dioxide out

Digestive examples

oral cavity, esophagus, stomach, intestines, rectum, and anus

Digestive functions

breaks down food, eliminates undigestible food

Nervous examples

brain, sensory receptor, spinal cord, and nerves

Nervous functions

fast-acting control system of the body, responds to external stimuli

Endocrine examples

pineal, pituitary, thyroid, thymus, adrenal, pancreas, testis, and ovary

Endocrine functions

secrete hormones

Cardiovascular examples

heart and blood vessels

Cardiovascular functions

transport materials, pump blood

Urinary examples

kidney, ureter, bladder, urethra

Urinary functions

eliminates nitrogenous wastes from the body, regulates water and electrolytes

Reproductive examples (male)

seminal vesicles, prostate gland, penis, vas defrens, testis, and scrotum

Reproductive examples (female)

mammary gland, uterine tube, uterus, and vagina

Reproductive functions

offspring

Receptor

type fo sensor that monitors the environmental variables and responds to stimuli

Where are pain sensors located?

embedded in your skin

Control center

determines the set point for a variable; analyses the input and determines the output

Effector

responds to the stimulus

Positive feed back

enhance the variable

Negative feed back

inhibit the variable

What are the four most common elements in the body?

oxygen, carbon, hydrogen, and nitrogen

% Oxygen?

65%

% Carbon?

18.5%

% Hydrogen?

9.5%

% Nitrogen?

3.2%

Oxygen

component of organic & inorganic molecules; gas - essential to cellular repiration

Carbon

primary element in all organic compounds (proteins, lipids, carbs, and nucleic acids)

Hydrogen

found in most organic molecules; ion - influence the pH of body fluids

Nitrogen

component of proteins and nucleic acids

How much of the body is consumed by the four most common elements?

96.1%

% Calcium?

1.5%

% Phosphorus?

1%

% Potassium?

.4%

% Sulfur?

.3%

% Sodium?

.2%

Calcium

salt - found in bones and teeth; ion - necessary for muscle contraction, nerve impulses, and blood clotting

Phosphorus

salt - found in bones and teeth; present in proteins and nucleic acids; essential component of ATP

Potassium

ion - necessary for nerve impulses and muscle contraction

Sulfur

component of proteins

Sodium

ion - important for water balance, nerve impulses, and muscle contractions

% Chlorine?

.2%

Chlorine

most abundant extracellular ion

% Magnesium?

.1%

Magnesium

present in bones; important for enzyme action and metabolism

% Iodine?

.1%

Iodine

needed for functional thyroid hormones

% Iron?

.1%

Iron

component of functional hemoglobin (molecule for transporting oxygen); important for some enzymes

Biochemestry

chemical composition of living matter

Two classes of compounds

inorganic and organic

Inorganic compounds

typically lack carbon, small simple molecules, and contain salt, oxygen, & methane

Organic compounds

contain carbon, usually large, and covalently bonding

Examples of inorganic compounds

water, salts, acids, and bases

Water

2/3 of our body weight

What makes water so important?

high heat capacity, polarity/solvent properties, chemical reactivity, and cushioning

High heat capacity

can absorb and release large amounts of heat before the temperature changes dramatically

What is good about high heat capacity?

it prevents major changes in temperature (sun exposure, cold winds, and exercise)

Polarity/ solvent properties

water is an excellent solvent because it is polar

Solvent

bigger substance

Solute

being dissolved

Cushioning

water helps make up the fluid that cushions your brain (cerebrospinal fluid); helps cushion fetus during development of the womb

Salt

ionic compound, dissociate in body fluids, ions vital to body function