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Human Systems (Block B)

Java games to help you learn the vocabulary for the Living Systems: Human Systems (Block B) section of the RCT.

nutrientsSubstances in food that provide energy and the materials for growth and repair.
reflexAn automatic, inborn response to a stimulus.
responseThe reaction to a stimulus.
sense organsOrgans that receive stimuli, including; eyes, ears, nose, taste buds and receptors in the skin.
stimulusA change in the environment that causes an organism to react.
organismA living thing.
reproductionThe process by which living things make more of their own kind.
sexualReproduction that requires two parents.
asexualReproduction where a new individual forms from a single parent.
allergyAn abnormal sensitivity to certain substances in the environment.
bladderAn organ of the excretory system which stores urine until it can be released from the body.
bloodA liquid tissue composed of several different types of cells that transport needed substances to cells and remove wastes.
boneA tissue which provides support for the body and protects organs.
brainThe part of the central nervous system located in the skull which interprets sensory inputs and coordinates and controls body activities.
bronchiTwo large branches of the windpipe that carry air to the lungs.
capillariesTiny blood vessels that surround the body tissues and permit exchange of materials between the blood and body cells.
cardiac muscleAn involuntary muscle responsible for the heart's pumping action.
cartilageA flexible tissue that cushions the bones and provides flexibility.
cellular respirationThe process which takes place within cells that uses oxygen and releases energy from nutrients.
chemical digestionA process in which nutrients in food are broken down into a form that can be absorbed into the bloodstream.
endocrineThe body system that helps coordinate and control body functions with chemical messengers.
esophagusA tube that connects the mouth with the stomach.
excretionThe process by which wastes are removed from the cells into the blood and eventually from the body.
fatA nutrient which is a source of essential fatty acids and glycerol.
fecesSolid human wastes.
heartAn organ made of muscle tissue that pumps blood to all parts of the body.
hormonesChemicals secreted by the endocrine glands directly into the bloodstream and transported to organs where they produce their effect.
involuntaryA type of muscle that is not consciously controlled. Example: cardiac muscle.
jointsPlaces in the skeleton where bones are connected to each other.
kidneysA pair of organs that filter water, urea, minerals and other wastes from the blood.
ligamentsConnective tissue that holds bones together at joints.
limbsThe arms and legs.
liverAn accessory organ which aids in digestion and protection from toxins.
locomotionThe movement of the entire body.
lungsTwo spongy organs filled with air sacs where oxygen is absorbed into the blood and carbon dioxide released.
lymphA fluid that bathes the body cells.
mammary glandsThe breasts, which produce milk that nourishes offspring.
nervous systemCoordinates and controls body functions and responses to the environment.
organA group of tissues working together to do a special job.
pancreasA endocrine gland which aids in the control of digestion.
penisA male reproductive organ used to deposit semen into the female vagina.
physical digestionThe process of breaking food into smaller pieces.
proteinA nutrient which is a source of amino acids.
respirationThe process by which oxygen is taken in and carbon dioxide is released.
ribsCurved bones that surround and protect the heart and lungs.
skeletalThe body system that provides support and protection for the body.
skinThe organ that covers and protects the body and plays a role in excretion.
skullA group of flat bones that surround and protect the brain.
small intestineOrgan where digestion is completed and end products of digestion are absorbed into the blood.
smooth muscleAn involuntary muscle found in the digestive, circulatory and respiratory systems.
spinal cordPart of the central nervous system that processes reflex activities.
spineThe backbone, protects the spinal cord.
starchA nutrient which is a source of simple sugars.
stomachDigestive organ where chemical digestion occurs. Contains high concentrations of hydrochloric acid.
sweat glandsOrgans in the skin that excrete wastes such as water, salts and nitrogenous wastes.
systemA group of organs working together to perform specific life functions.
tendonsTissue that connects muscles to bones.
tissueA group of similar cells working together to do the same job.
tracheaThe windpipe, connects the mouth to the bronchi.
veinsBlood vessels that carry blood back to the heart.
voluntaryMuscles that are consciously controlled.
cellThe unit of structure and function in an organism.
gametesReproductive cells (sperm and egg).
meiosisA kind of cell division that reduces the number of chromosomes in half, forming sperm or egg cells.
mitosisA kind of cell division that results in the production of two identical new cells.
ovariesTwo organs of the female reproductive system that produce eggs.
oviductsTwo tubes through which eggs travel from the ovaries to the uterus. Where fertilization occurs in humans.
sperm ductsTiny tubes that carry sperm cells away from the testes.
testesMale reproductive organs that produce sperm cells.
uterusA muscular organ in which the developing fetus is protected and nourished.
zygoteThe single cell formed when an egg is fertilized by a sperm. Undergoes cell divisions to become an organism.


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