AP 1 Flashcards
that anatomical landmarks on the surface of the body which are visible and palpable?
surface anatomy
the structures that can be examined without a microscope?
gross anatomy
structure of specific systems of the body?
systemic anatomy
specific regions of the body?
regional anatomy
structural changes associated with disease?
pathological anatomy
internal body structures that can be visualized with techniques such as x-rays?
imaging anatomy
what is histology?
microscopic structure of tissue
describe molecular physiology
functions of individual molecules such as proteins and DNA
what are the functional properties of nerve cells?
neurophysiology
the study of hormones and how they regulate the body?
endocrinology
what are the six levels of the structural organization?
chemical
cellular
tissue
organ
system
organismal
what are the eleven systems of the body?
integumentary
skeletal
muscular
nervous
endocrine
lympahtic
digestive
reproductive
cardiovascular
respiratory
urniary
what are the six basic life processes?
metabolism
responsiveness
movement
growth
differentiation
reproduction
what are two important ways body fluid helps homeostasis?
maintain volume
composition
what are some examples of extracellular fluids?
interstitial
blood plasma
lymph
cerebrospinal
synovial
what two systems play a large role in homeostasis?
endocrine
nervous
what are the disruptions that change a controlled condition?
stimulus
what are the two types of feedback systems?
negative
positive
what’s an example of a negative and positive feedback system?
negative = blood pressure regulation
positive = child birth
what’s the difference between a positive and negative feedback system?
negative is a change in a controlled condition
positive is to strengthen and reinforce a change
what is the structure that monitors the change and end impulses?
recetor
what’s an example of a controlled centre?
brain
what’s the difference between disorder and disease?
disorder: abnormality of a strutter or function
disease: a more specific term for illness by a recognizable set of signs and symptoms
what does subjective means? objective?
subjective: manifestations that cannot be observed
objective: manifestations that can be observed or measured
are symptoms objective or subjective?
subjective
what are the four major chemicals of the body?
oxygen
carbon
hydrogen
nitrogen
what are the minor chemicals of the body?
calcium
phosphorus
potassium
sulfur
sodium
chlorine
magnesium
iron
what percentage of elements makes u the body?
96% major chemicals
3.65 minor chemicals
what are the three types of atoms?
protons (+)
neutrons (=)
electrons (-)
what is the dense central core of an atom?
what does a nucleus consist of?
nucleus
positively charged proton s and uncharged neutrons
what surrounds the nucleus?
electrons
what are the electron shells?
regions around the nucleus
how many electrons does each electron shell hold?
1st = 2
2nd = 8
3rd = 18
what are atoms that has a positive or negative charge due to unequal numbers of protons and electrons?
ions
what is called it when two atoms or more share electrons?
molecules
what are substances that contain atoms of 2 or more different elements?
compounds
what are free radicals?
an electrically charged atom or group of atoms with unpaired electrons in the outermost shell
what are the types of chemical bonds?
ionic bonds
covalent bonds
hydrogen bonds
what is the difference between cations and anions?
cations = positively charged ions
anions = negatively charged ions
what are the ionic compounds that break apart into positive and negative ions?
electrolytes
describe a covalent bond.
two or more atoms share electrons rather then gaining or losing them
what is the different between polar and nonpolar covalent bonds?
nonpolar = sharing equal atoms
polar = unequal sharing of atoms
how does a covalent bond become strong?
adding a larger number of electron pairs
are hydrogen bonds weak or strong?
weak
fill in the blank:
in a chemical reaction the total mass of _____ = the mass of ____
in a chemical reaction the total mass of reactants = the mass of products
what does metabolism refer too?
all chemical activity in the body
what is the difference between potential and kinetic energy?
potential = store energy
kinetic = associated with motion
match the following:
exergonic reactions A+B =AB
endergonic reactions AB= A+B
exergonic reactions AB= A+B
endergonic reactions A+B =AB
what is the collision energy needed to break the chemical bonds of reactants?
activation energy
what two factors influence the chance that collisions will occur to a chemical reaction?
concentration
temperature
what are the chemical compounds that speed up chemical reactions by lowering the activation energy needed for a reaction to occur?
catalyst
what are the four kins of chemical reactions?
anabolism
catabolism
exchange
reversible
match the following:
anabolism product can be revert to original
catabolism synthesis reaction
exchange reactions consisting of synthesis and decom
reversible decomposition reaction
anabolism synthesis reaction
catabolism decomposition reaction
exchange reactions consisting of synthesis and decom
reversible product can be revert to original
what is the difference between inorganic and organic compounds?
inorganic = lack of carbon, ionic or covalent, 55-60%
organic = have carbon, covalent, 38-43%
what is the universal solvent?
water
what’s the difference between hydrophilic and hydrophobic?
hydrophilic = dissolves easy in water
hydrophobic = doesn’t dissolve into water
what makes water a good lubricant?
eps with sliding and movement in the chest
in joints it helps where bones, ligament, or tendon rub again each other
helps digest food
what is it called when acids or bases or converted into weak acid or bases?
buffer system
what are the categories of organic compounds?
carbohydrates
lipids
proteins
nucleic acid
ATP
what are three elements of carbohydrates?
carbon
hydrogen
oxygen
what are monosaccharides?
3-7 carbon atoms
what are disaccharides?
combination of 2 monosaccharides
what are the four nitrogenous bases?
adenine
thymine
cytosine
guanine
what are the three main parts of the cell?
plasma membrane
cytoplasm
nucleus
what is the molecular arrangement of a plasma membrane that resembles an ever-moving sea of fluid that contains a mosaic of many different proteins?
fluid mosaic model
what are the three lipid molecules present in the lipid bilayer?
phospholipids
cholesterol
glycolipids
what are the non polar portions of the lipid bilayer?
steroid rigs and hydrocarbon tails
what is the difference between integral and peripheral membrane proteins?
integral: extends into and through the lipid bilayer
peripheral: not firmly embedded in the membrane
what are the functions of glycocalyx?
enables cells to recognize one another
enables cells to adhere to one another
protects cells from being digested by enzymes in the extracellular matrix
what is the role of carriers of the membrane proteins ?
transporters, carry a polar substance from one side to the other
what os the role of receptors in membrane proteins?
serve as cellular recognition sites
what is the role of enzymes in the membrane proteins?
catalyze for chemical reactions
what anchors neighbouring proteins in membrane proteins?
linker
what’s the difference between permeable, impermeable, and selective permeability?
permeable: permits the passage of substances
impermeable: does not permit the passage of substance
selective permeability: plasma membrane that permits some substances to pass more then others
what is the difference in the concentration of certain substances on either side of the plasma membrane?
concentration gradient
what are some passive processes of transport over the plasma membrane?
simple
facilitated
osmosis
what are some active processes of transport over the plasma membrane?
primary active
secondary active
describe diffusion?
passive process in which the random mixing of particles in a solution occurs from kinetic energy
what effects rate of diffusion?
steepness
temperature
mass of doffing substances
surface area
distance
what is the difference between simple and facilitated diffusion?
simple: substance move freely through the lipid bilayer of the plasma membrane
facilitated: integral membrane plasma protein assist a specific substance across the membrane because the substance is too polar or highly charged
what is osmosis?
a passive diffusion where there is the net movement of a solvent through a selectively permeable membrane
occurs with water
the measure of solutions’ ability to change the volume of a cell is called what?
tonicity
what Is isotonic solution?
maintain normal shape and volume within a cell
what is it called when outside the cell has a lower solute concentration compared to the cytosol inside the cell?
hypotonic solution
what I the difference between lysis and hemolysis?
lysis: rupture of cells due to hypotonic solutions
hemolysis: rupture of red blood cells
what is shrinking of the cells called?
crenation
what is hypertonic solution?
higher solute concentration than the inside of the cell.
what makes active transport different then passive transport?
active requires energy to go against the concentration gradient
what’s the difference between primary and secondary active transport?
primary = atp
secondary = stored atp
what is phagocytosis?
a form of endocytosis where cells engulf large particles. phagocytes carry this process
what is the difference between macrophages and neutrophils?
macrophages = body tissue
neutrophils = WBC
how much of the cytoplasm is made of cytosol?
55%
what is the cytoskeleton?
a network of protein filaments in the cytosol
what is the function of cytoskeletons?
strutter, support
allows movement
what are microfilaments?
near edge of the cell
provide movement such as muscle contraction
mechanical supporter
what are centrosomes?
near nucleus
responsible for cell division and growth
what are cilia?
short hair like projections
what are the structures smaller then cilia but longer which can move an entire cell?
flagella
what do ribosomes do?
protein synthesis of RNA and proteins
what is the difference between the rough and smooth ER of the reticulum?
rough= has ribosome
synthesizes glycoproteins and phospholipids
smooth= no ribosome
synthesize fatty acid an steroids
what does Golgi do?
accepts protein from rough ER
what does lysosome do?
vesicles from golgi complex
digestion
what are peroxisomes?
oxides amino acids and fatty acids
what are proteasome?
tiny barrel-shaped structures that contain proteases
degrades unneeded or damaged proteins into small peptides
what is the powerhouse of the cell, producing ATP?
mitochondria
where id DNA located?
nucleus
what is the role of protein?
determine the physical and chemical characteristics of s cells and organisms themselves
assemble cellular structures
serve aa hormones, transporters etc
what is gene expression?
process of which a genes DNA is used as a template
what is the difference between transcription and translation?
transciption = information encoded a specific region of DNA
translation = RNA activating RNA
what is a base triplet?
the sequence of three nucleotides
what is a codon?
each base triplet is transcribed as a complementary sequence of three nucleotides
what is genetic code?
the set of rules that relate the base triplet sequence of DNA to the corresponding codons of RNA and amino acid
where does transcription take place?
in the nucleus
what are the three types of RNA?
messenger RNA
ribosomal RNA
transfer RNA
what is the process of copying genetic information into a complementary sequence of codons?
transcription
what Is initiation transcription?
when RNA starts the process of transcription of DNA enzymes instruct where to start and where to end. only one of two DNA strands will be used for RNA synthesis
what is termination in relation to transcription?
where transcription ends
where does translation take place?
ribosomes
what is a simpler way to put translation?
produce protein in the body
what are the binding sites for the small and large subunits of ribosomes?
small = binding site for tRNA
large = P sites (tRNA attaches to mRNA)
a site (tRNA held against amino acids)
e sites (tRNA binds just before it is released into ribosome)