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Biol1010
Biology Final
87
Biology
Undergraduate 2
05/02/2011

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Term
abstinence
Definition
100%
Term
zygote
Definition
when sperm and egg fuse
Term
vasectomy
Definition
vas deferens is severed and tied off
99.6% effective
Term
tubal litigation
Definition
oviducts are cauterized or cut and tied off
99.6%, but can cause pain in the pelvic area
Term
hormonal implant
Definition
can cause heavy bleeding
99%
Term
IUD
Definition
coils inserted into the uterus by a physician
can cause pelvic inflammatory disease
98%
Term
Birth Control Pill
Definition
oral contraceptive made of synthetic estrogens and progesterone's
-suppresses oocyte maturation and ovulation
-94%
-often corrects erratic menstrual cycles and reduces cramps, but in some women it may cause nausea and headaches
Term
morning after pills
Definition
interfere with hormones that prevent ovulation or affect hormone levels between ovulation and implantation
-can cause nausea dizziness, abdominal pain
Term
condoms
Definition
only latex condoms - protection
86%
Term
spermicidal foam or jelly
Definition
toxic to sperm
should be used with a condom or diaphragm
75%
Term
diaphragm
Definition
placed over the cervix before intercourse
84%
Term
rhythm method
Definition
avoid intercourse during a womens fertile period
not very reliable
Term
withdrawal
Definition
not effective
pre-ejaculation fluid may contain sperm
Term
douching
Definition
rinsing the vagina with a chemical after intercourse
useless
Term
pathogens that cause STD's
Definition
1 in 4 people in the US who engage in sexual intercourse will become infected by...
Term
lutenizing hormone begins to falter
Definition
embryonic cells produce chorionic gonadotropin
Term
chorionic gonadotropin
Definition
stimulates corpus luteum to produce progesterone
Term
oxytocin
Definition
causes contraction of the uterus
Term
placenta begins to produce progesterone
Definition
end of 3rd month of pregnancy chorionic gonadotropin begins to falter
Term
lactation
Definition
occurs in the mammary glands in the breast
Term
calcium, sugar, vitamins, and water from the blood
Definition
milk is produced by removing...
Term
prolactin
Definition
synthesis of enzymes required for milk production
Term
oxytocin
Definition
released when a newborn suckles, triggers contraction that force milk into the milk ducts
Term
colustrum
Definition
produced in first three days, clear - yellow fluid - contains antibodies
Term
dendrites
Definition
extensions where the neuron receives information
Term
axon
Definition
extensions that carry signals away from neurons
Term
action potential
Definition
a reversal in charge across a neurons plasma membrane
how neurons accept and pass on signals
Term
chemical synapse (synaptic cleft)
Definition
a narrow cleft between the output zone of a neuron and the input zone of an adjacent cell
Term
neurotransmitters
Definition
signaling molecules that diffuse across synaptic clefts
Term
nerves
Definition
long axons of sensory neurons
Term
reflexes
Definition
automatic movements made in response to stimuli
Term
sensory neurons
Definition
connected to motor neuron in the spinal cord
Term
central nervous system
Definition
spinal chord and brain
Term
brain
Definition
control center of nervous system
Term
spinal cord
Definition
expressway for signals between the peripheral nervous system and the brain
Term
spinal chord
Definition
sensory and motor neurons connect
Term
spinal chord
Definition
threads through the vertebral column
Term
peripheral nervous system
Definition
nerves which thread through the rest of the body
Term
somatic nerves
Definition
control movement of the head, trunk, and limbs
Term
autonomic nerves
Definition
control smooth muscle, cardiac muscle, and glands
Term
perception of sound
Definition
wavelike forms of mechanical energy
Term
tympanic membrane (eardrum)
Definition
external ear canal terminates with the....
Term
tympanic membrane
Definition
transmits movements (bc of soundwaves) to three ear bones (ossicles)
Term
ossicles
Definition
malleus - incus - stapes - oval window
Term
cochlea
Definition
has a fluid filled channel. when the oval window moves it causes the fluid to move and displaces the round window (membrane)
Term
organ of corti
Definition
responds to the movement of fluid within the cochlea and transmits this information to the brain via the auditory nerve
Term
auditory nerve
Definition
where sounds travels to get to the brain
Term
cornea
Definition
clear covering of the eye
Term
iris
Definition
muscle that regulates the amount of light that passes into the eye - colored part
Term
pupil
Definition
entrance for light
Term
retina
Definition
a thin layer in the back of the ......
Term
cones
Definition
color and detailed vision
Term
forvea centralis
Definition
cones (color & detail) are clumped in a central area
Term
rods
Definition
scattered throughout the retina
Term
lens
Definition
focuses on the incoming images onto photo receptors - changes with focus
Term
optic nerve
Definition
carries sensory input form the eye to the brain
Term
viewing distance
Definition
optic nerve is relaxed when...
Term
viewing something close
Definition
optic nerve is contracted when....
Term
human population growth
Definition
root (directly or indirectly) of most environmental problems
Term
7 billion
Definition
current population
Term
exponential growth curve
Definition
increasing by a % (like interest in a bank)
Term
logistic growth curve
Definition
population has a carrying capacity - population limit
Term
migration & fertility
Definition
factors that affect population growth levels and growth rate
Term
Total Fertility Rate (TFR)
Definition
the average number of children that woman will have in her lifetime
Term
Children in the labor force
Cost of raising & educating children
Educational & employment opportunities for women
Infant mortality rate
Availability of birth control
Religious beliefs
Definition
Factors that affect birth rate
Term
Developing countries
Definition
Countries that have a much higher birth rate
Term
population policies
Definition
seek to lower the birth rate
Term
access to birth control
give women better access to education and better paying jobs
offer economic incentives to couples
Definition
types of population policies
Term
more crime riots
Definition
skewed sex ratio =
Term
I = impact
P = population
A = affluence
T = technology
Definition
I = PAT
(stands for)
Term
$2/day
Definition
more than half of the worlds population lives on less than ....
Term
85% of the worlds resources
Definition
the richest 20% of the world utilizes...
Term
agriculture
Definition
grain population
Term
2/3
Definition
____ of the worlds population survives primarily on grain
Term
sensory neurons
Definition
detect stimuli
Term
motor neurons
Definition
react to stimuli
Term
Agriculture
- Genetically modified foods
Increase aquaculture
Feed livestock crop residue
Find ways to distribute food more evenly
Definition
Possible solutions to decline in food are.....
Term
Recycle (throughput)
Decrease consumption (input)
Definition
ways to decrease solid waste....
Term
agriculture waste
Definition
what is teh number one source of water pollution in the US?
Term
motor vehicles (most pollution)
stationary sources (fuel, combustion - industrial sources)
Definition
Sources of air pollution are...
Term
species
Definition
organisms that can interbreed with one another and produce viable offspring
Term
kingdom
phylum
class
order
family
genus
species
Definition
the 7 levels of classification are...
Term
biodiversity
Definition
variety of different species, genetic variability and the variety of ecosystems within an area
Term
habitual destruction
commercial harvest
introduction of exotic species
Definition
the 3 threats to species conservation are....
Term
generalist species
Definition
tolerate a wide variety of conditions and eat a variety of foods
Term
specialist species
Definition
usually limited to one type of habitat, and eat only one or a few types of foods
Term
5th
Definition
where does alabama rank in biodiversity?
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