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177 Cards in this Set

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anabolism

metabolic building up of simple compounds into more complex substnces.

uses ATP

anatomic position

standard position of the body for anatomic studies; upright face front, arms at side w/ palms forward & feet parallel

anatomy

study of body structure

catabolism

metabolic breakdown of substances into simper substances

creates ATP

cell

basic unit of life

disease

illness; abnormal stte in which part or all of the body does not function properly

extracellular fluid

fluid that is outside the cell

homeostasis

state of balance w/in the body; maintenance of body conditions w/in set limits

intracellular fluid

fluid within a cell

metabolism

all the physical and chemical processes by which an organism is maintained

negative feedback

self-regulation system in which the result of an action revereses that action; a method for keeping body conditions w/in a normal range and maintaining homeostasis

organ

body part containing two or more tissues functioning together for specific purpose

pathology

study of disease

physiology

study of the function of living organisms

system

group of organs functioning together for the same general purpose

tissue

group of similar cells that perfoms a specialized function

dis-

apart, away from

-ology

study of

path/o

disease

physi/o

nature, physical

-tomy

cutting, incision of

ana-

upward, again, back

cata-

down

extra-

outside of, beyond

home/o

same

intra-

within

stat, stasis

stand, stoppage, constancy

Levels of Body Organization

chemicals, cell, tissue, organ, organ system, organism

What systems Protect, support and provide movement?

Integumentary system, skeletal system, muscular system

integumentary system

skin, hair, nails, sweat glands and oil glands

skeletal system

bones, 206 bones and the joints between them

muscular system

muscles, produces movement, structure, protects organs and maintains posture

What body systems provide communication and control?

Nervous system and endocrine system

Nervous system

brain, spinal cord, and nerves. Sense organs (eyes, ears, taste buds, and organs of smell) receptors for senses like pain and touch.

Endocrine system

glands that produce hormones that regulate growth, nutrient utilization, and reproduciton. Ex. thyroid, pituitary, adrenal.

What body systems provide circulation and immunity?

Cardiovascular system and lymphatic system

Cardiovascular system

heart, blood vessels. Pumps blood throughout body carrying nutrients and oxygen to al body tissue and carries waste away

lymphatic system

lymphatic vessels, returns fluid from the tissue to the blood and absorbs fats. Ex. tonsils, thymus, and spleen

What body systems provide energy supply and fluid balance?

Respiratory system; digestive system; urinary system; reproductive system

repiratory system

lungs and passages to and from the lungs. Gas exchange takes place here....oxygen to body and CO2 out of body

digestive system

mouth, esophagus, stomach, small and large intestine, liver, gall bladder and pancreas. Takes in food, converts to energy for cells to use, absorbs into circulation

urinary system

kidneys, bladder, ureters, urethra. Rids the body of waste products and excess water.

reproductive system

all external and internal sex organs that produce offspring

acid

substance that can release a hydrogen ion when dissolved in water

amino acid

building block of protein

anion

negatively charged particle (ion)

aqueous

pertaining to water; an aqueous solution is one in which water is the solvent

atom

smallest subunit of a chemical element

base

a lower portion or foundation. Substnce that can accept a hydrogenb ion; substance that releases a hydroxide ion when dissolved in water; an alkali

buffer

substance that prevents sharp changes in a solutions pH

carbohydrate

simple sugar or compound made from simple sugars linked together, such as starch or glycogen

catalyst

substance that speeds the rate of a chemical reaction

cation

positively charged particle (ion)

chemistry

study of the composition and properties of matter

colloid

mixture in which suspended particles do not dissolve but remain distributed in the solvent because of their small size

compound

substance composed of 2 or more chemical elements

denaturation

change in structure of a protein, such as an enzyme, so that it can no longer function

electrolyte

compound that separates into ions in solution; substance that conducts an electric current in solution

electron

negatively charged particle in an energy level outside an atom's nucleus

element

one of the substances from which all matter is made; substance that cannot be decomposed into a simpler substance

enzyme

a protein that aceperates a specific chemical reaction

glucose

simple sugar; main energy source for the cells; dextrose

glycogen

compound built from glucose molecules that is stored for energy in the liver and muscles

ion

atom or molecule w/ an electrical charge; anion or cation

isotope

form of an element that has the same atomic # as another form of that element but a different atomic weight; isotopes differ in their #'s of neutrons

lipid

type of organic compound, one example of which is fat

molecule

particle formed by covalent bonding of two or more atoms; smallest subunit of a compound

nucleotide

building block of DNA and RNA; one is also a component of ATP

neutron

noncharged particle in an atom's nucleus

pH

symbol indicating hydrogen ion (H+) concentration; lower #'s indicate a higher H+ concentration and higher acidity

protein

organic compound made of amino acids; found as structural materials and metabolically active compounds such as enzymes, some hormones, pigments, antibodies, and others.

proton

positively charged particles in an atom's nucleus

radioactive

pertaining to isotopes that fall apart easily, giving off radiation

salt

compound formed by reaction between an acid and base (NaCl) Sodium Chloride

Solute

substance that is dissolved in another substance

solution

homogeneous mixture of one substance dissolved in another; the components in a mixture are evenly distributed and cannot be distinguished from each other

solvent

substance in which another substance is dissolved

steroid

category of lipids that includes the hormones of the sex glands and the adrenal cortex

substrate

substance on which an anzyme works

suspension

heterogeneous mixture that will separate unless shaken

valence

combining power of an atom; # of electrons lost, gained, or shared by atoms of an element in chemical reactions

co-

together

covalent

aqu/e

water

aqueous

heter/o

different

heterogeneous

hom/o

same

homogeneous

hydr/o

water

dehydration

phil

to like

hydrophilic

phobia

fear

hydrophobic

-ase

suffix used in naming enzymes

lipase

de-

remove

denaturation

di

twice, double

disaccharide

glyc/o

sugar, glucose, sweet

glycogen

mon/o

one

monosaccharide

poly

many

polysaccharide

sacchar/o

sugar

monosaccharide

tri

three

triglycerides

What is an element, give examples.

buidlibng blocks of all matter, Over 100 on the periodic table. Smallest unit of an element is an atom. Examples are oxygen, hydrogen or helium

What elements are contained in table salt?

NaCl (Sodium Chloride) Sodium and Chlorine

Which element makes up the greatest % of body weight?

oxygen w/ 65%

Molecules VS. Compounds

molecules are atoms that chemically bond with each other covalently


Compounds are molecules w/ 2 or more different kinds of atoms. Compounds can be ionic or covalent.

What is an atom and its' parts?

An atom is the smallest unit of an element. Protons (positive charge) and neutrons (neutral charge) are in the nucleus. Electrons (negative charge) are in the outer rings called valence levels

What does the atomic # and the atomic mass represent?

atomic # is the # of protons in the nucleus


atomic mass is the sum of the weight of protons and neutrons

What is a mixture and what types are there?

A mixture is 2 or more substances not chemically bonded. Examples.....solute, solvent, soution, aqueous solution, homogeneous, suspension, colloid

suspension mixture

heterogeneous, non uniform, uneven distribution

colloid

heterogeneous, evenly suspended or dispersed

what is an ionic bond?

transfer of electron between 2 atoms. One atom gives and the other takes

What is a covalent bond?

when two or more atoms share electrons

what is the difference between a covalent polar bond and a covalent non polar bond?

nonpolar- electrons are shared evenly


polar-electrons are not shared evenly

explain the pH scale and what the numbers represent.

pH scale measure the relative concentrations of hydrogen and hydroxide ions in a solution. (0=most acidic; 14= base; 7=neutral) body pH range = 7.35-7.45

Explain what an organic compound is and give examples.

a compound that contains molecules with carbon-hydrogen bonds and found in all living things. Examples are carbohydrates; protein; nucleic acids; lipids

Explain carbohydrates

also know as a saccharide or sugar. They form as monosaccharides, disaccharides, polysaccharides. Mono is the simplest sugar like glucose or fructose, Di- has two sugars like sucrose or lactose, and finally poly has more than two sugars like starch or glycogen

Explain proteins

most complex organic compound. They help with structure, enzymatic catalyst and regulation. Polymers composed of monomers call aminoacids. 4 levels of structure.

Explain lipids

fats, triglycerides, phospholipids, steroids. Triglyceride is a simple fat, and 3 fatty acid tails, insultates body, protects organs, stores energy. Main component of cell membranes. Steriods contain rings of carbon atoms, and they help regulate body function.

nucleotides

use ATP. Link together by covalent bonds. Adenine, guanine, cytosine, thymine

What are enzymes and their function?

enzymes are proteins that help accelerate a specific chemical reaction. . Only certain enzymes can bind with specific receptors to allow certain chemical reactions to occur.

active transport

movement of molecules into or out of a cell from an area where they are in lower concentration to an areaa where they are in higher concentration. Such movement, which is opposite to the direction of normal flow by diffusion, requires energy and transporters

cancer

tumor that spreads to other tissues; a malignant neoplasm

carcinogen

cancer-causing substance

chromosome

dark-staining, thread-like body in a cell's nucleus; contain genes that determin hereditary traits

cytology

study of cells

cytoplasm

substance that fills the cell, consisting of a liquid cytosol and organelles

diffusion

movement of solutes from a region where they are higher concentration to a region where they are in lower concentration

DNA

deoxyribonucleic acid--genetic material of a cell; makes up chromosomes in the cell's nucleus

endocytosis

movement of large amounts of material into a cell using vesicles (i.e. phagocytosis and pinocytosis)

exocytosis

movement of large amounts of material out of the cell using vesicles.

filtration

movement of material through semipermeable membrane down a pressure gradient

gene

hereditary factor; portion of DNAon a chromosome encoding a specific protein

hemolysis

rupture of red blood cells

hypertonic

solution that is more concentrated than the fluid in the cell

hypotonic

A solution that is less concentrated than the fluid in the cell

interphase

stage of a cells life between one mitosis and the next when the cell is not dividing

isotonic

solution that has the same concentration as the fluid in the cell

micrometer

1/1000th of a millimeter; an instrument for measuring through a microscope

microscope

magnifying instrument used to examine cells and other structures not visible with naked eye; examples....compound light microscope, transmission electron microscope (TEM), and scanning electron microscope (SEM)

mitochondria

cellular organells that manufacture ATP

mitosis

type of cell division that produces 2 daughter cells that are exact

mutation

change in gene or a chromosome

nucleus

largest cellular organelle, has DNA, directs all cell activities

organelle

specialized subdivision within a cell

osmosis

passage of water through a semipermeable membrane from the region of lower solute concentration to the region of higher solute concentration

phagocytosis

engulfing of large particles through the plasma membrane

plasma membrane

outer covering of a cell; regulates what enters and leaves the cell; cell membrane

ribosome

small body in the cell cytoplasm that is a site of protein making

RNA

ribonucleic acid--substance needed for protein making in the cell

cyt/o-

cell

cytology

micr/o

small

microscope

bi-

two

bilayer

chrom/o

color

chromosome

end/o

in, within

endoplasmic

lys/o

loosening, dissolving, separating

lysosomes eat or dissolve material

-some

body

ribosome

ex/o

outside, out of, away

exocytosis

hem/o

blood

hemolysis

hyper

above, over

hypertonic

hypo

below, beneath

hypotonic

iso

same, equal

isotonic

phag/o

to eat, ingest

phagocytosis

pin/o

to drink

pinocytosis

semi

partial, half

semipermeable

ana-

upward, back, again

anaphase

inter-

between

interphase

meta-

change

metaphase

pro-

before, in front of

prophase

tel/o-

end

telophase

carcin/o

cancer, carcinoma

carcinogen

-gen

agent that produces or originates

What is the metric unit used in microscope measurement?

micromillimeter (mcg) or 1/1000th of a millimeter

What is the permeability of the plasma membrane and how do substances move across it?

It is a semipermeable membrane and substances move across by diffusion, osmosis, filtration and active transport.

What is a ligand?

bulk material like lipoproteins that are brought into a cell through endocytosis

What is a double helix?

formed by nucleotide pairings (A-T; G-C), makes up chromosomes, hereditary units that control cell activity; genes

Where is energy from nutrients converted into ATP?

Mitochondria

Which cells must generate large amounts of ATP?

Active cells such as muscle cells or sperm cells need lots of energy, so they contain alot of mitochondria.

What is an aquaporin and its function?

Its the transmembrane channel protein that enables water movement across the plasma membrane

What are the types of RNA and their function?

mRNA- messenger; transcribes DNA code in the nucleus


rRNA- ribosomal; makes up ribosomes, site of protein synthesis


tRNA- transfer; translates genetic code into protein with rRNA

What acronym is used for the stages of mitosis?

PMAT-prophase, metaphase, anaphase and telophase


prophase is where chromosomes condense


metaphase is where they ine up across the center of the cell and attach to the spindle


anaphase- centromeres spit and idential chromosome move to opposite centrioles


telophase- pinching of membrane to for new identical cells

What are some risk factors for cancer?

heredity; chemicals; radiation; diet; viruses

What cell populations would be considered a cancer?

epithelial stem cells