TEAS- science pt 4 Flashcards
ex: if a scientist observes swans on the lake, and all of the swans that he sees are white, the scientist might conclude that all swans are white
- based on observation
inductive reasoning
ex: a scientist might start out with the general premise that all accountants are good with numbers. she might then meet omar, who is an accountant. the scientist would conclude that omar is good with numbers
deductive reasoning
shows that one factor increases, the other factor increases
direct correlation or positive correlation (direct variation or positive variation)
shows that one factor increases, the other decreases
inverse correlation or indirect correlation or negative correlation (variation)
to measure thickness
caliper
to measure force
spring scale
bone is synthesized within tubular structures called ____, which is made of hydroxylapatite embedded in a matrix of collagen
osteon
each osteon consists of concentric layers called ___, which are compact bone tissue that surround a central canal
lamellae
how are muscle groups identified
size
location
number of origins and insertions
function of muscle
____responds to outside changes
somatic nervous system
___ responds to inside changes
autonomic nervous system
sensory neurons
afferent neurons
motor neurons
efferent neurons
in ___ circulation, oxygen-poor blood coming from the blood enters the heart through the right atrium and is pumped by the right ventricle to the lungs to receive oxygen
pulmonary circulation
blood is then pumped by the left ventricle to the left atrium and then sent out to the body.. the process of delivering oxygen-rich blood to the rest of the body is called
systemic circulation
the heart has its own system of blood vessels that specifically circulates blood for its own function
coronary system
process of one heartbeat: the heart contracts and blood is forced out; then it relaxes and the heart fills with blood
cardiac cycle
movement of air into and out of the lungs
pulmonary ventilation
another process of the respiratory system is ____, the process by which cells get energy from nutrients
cellular respiration
3 main secretions in the stomach
pepsinogen
mucus
hydrochloric acid
once the food is digested in the stomach, the product is called ____
chyme
swallowed food mixed with saliva then moves through the esophagus (this is called what?)
bolus
the pancreas secretes _____, which helps to break down fats into useful nutrients for the body
pancreatic juice
kidneys work with the cardiovascular system to ___ and ___
filter blood
maintain blood pressure
metabolic waste that is removed by the kidneys include what things
water
carbon dioxide
nitrogenous material
small glands found mainly in thorax and abdomen and help prevent disease by filtering out bacteria in the lymph
lymph nodes
___ occurs when the body recognizes these pathogens and creates an action against them
immune response
harmful molecules that are recognized and elicit an immune response are
antigens
in response to antigens, the body makes ____ to fight off specific antigen cells
antibodies
immune system is divided into two categories
innate immunity adaptive immunity (acquired)
refers to nonspecific response mechanisms that begin immediately or within hours of an antigen’s appearance
- includes physical barriers such as skin and mucus
- chemicals in the blood
- immune system cells that attack foreign cells in body
innate immunity
refers to antigen-specific response and is more complex
-provides memory of an antigen that makes future responses to that antigen more specific
adaptive immunity (acquired)
if pathogens successfully enter the body, often a ___ or ___ will occur to fight off infection
fever
inflammation
special white blood cells, that are formed in response to certain antigens
lymphocytes
some examples of lymphocytes include
natural killer cells
T cells
B cells
work against cells infected with bacteria and viruses
natural killer cells
attack body cells infected with antigens
T cells
produce specific antibodies
B cells
develops from natural exposure to pathogens and an immune response
-can also be mimicked through vaccinations
active immunity
elicits a temporary response when a person is given antibodies produced by another person or animal
passive immunity
if the immune system mistakenly targets host cells, this leads to _____
autoimmune disease
of the 20 primary amino acids, only ____ of these can be produced by the body itself
11
9 amino acids must be obtained through the diet, they are known as
essential amino acids
proteins synthesize and repair ___
DNA
proteins respond to ___
stimuli
proteins send and receive ____
chemical signals
___ is a component found in carbohydrates that cannot be digested by the body
fiber
once digested, lipids are broken down into
fatty acids and glycerol
prokaryote cells are represented in what two types of organisms
bacteria and archaea
glucose + oxygen–> carbon dioxide + water + ATP
cellular respiration in the mitochondria (aerobic respiration)
water + carbon dioxide + sun’s energy–> glucose + oxygen
photosynthesis
which is larger, RNA or DNA?
DNA
refers to the genetic makeup in its chromosomes
genotype