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How are we made?
Term | Definition |
---|---|
Body system | groups of organs that work together to perform a specific job in the human body |
Respiration | We breath in air that contains oxygen and we breath out carbon dioxide |
trachea | Tube that allows air to pass to and from lungs |
bronchi | two short branches located at the lower end of the trachea that carry air into the lungs. |
bronchiole | smallest branches of the bronchi |
alveoli | Tiny air sacs in the lungs at the end of each bronchiole |
diaphragm | Large, flat muscle bellow the lungs that helps with breathing |
lungs | Main organs of the respiratory system |
blood | It carries water, oxygen and other nutrients to all the cells of the human body. It also carries carbon dioxide to the lungs to be exhaled. |
circulation | process by which blood is moved around the body |
atrium | Each of the two upper chambers of the heart that receives blood that comes into the heart |
ventricle | Lower chamber of the heart that pump blood out of the heart |
heart | A muscular organ of the circulatory system that pumps blood throughout the body. |
blood vessels | Tubelike structures that carry blood throughout the body |
veins | A blood vessel that carries blood back to the heart |
arteries | Blood vessels that carry blood away from the heart |
capillaries | Smallest blood vessels |
reproduction | the process of producing new individuals of the species to survive. |
sperm ducts | Take sperm away from testicles to the urethra |
testicles | The organs that produce sperm |
scrotum | External sac that contains the testicles |
penis | male reproductive organ located outside of the body |
urethra | tube inside the penis that leads urine and sperm out of the body |
sperm | Male sex cell |
ovaries | Female reproductive organ that produce the ova |
ovum/ova | Female reproductive cell |
vagina | a muscular tube that connects the uterus to the outside of the female body |
vulva | External part of the female reproductive system |
fallopian tubes | Tubes which carry ova from the ovaries to the uterus. Where fertilization occurs |
uterus | Womb. Internal cavity where the baby develops until its birth. |
embryo | The developing human organism from about 2 weeks after fertilization up to the nineth week. |
foetus | Unborn baby; usually around 9 weeks from conception |
umbilical cord | a tube containing the blood vessels connecting the fetus and placenta |