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science
This is about reproduction and other science terms.
| Question | Answer |
|---|---|
| What is reproduction? | how DNA gets passed from parent to offspring all living things do it |
| 2 types of reproduction: | Sexual-requires 2 organisms ;has more genetic variation; takes longer Asexual- requires no partner; is much quicker, but very little genetic variation |
| Functions of the reproductive system: | Develops male/female physical traits Produce sex cells Assists in fertilization Produces offspring |
| Males: | has internal and external organs. |
| Penis:(male) | external male organ through which urine and semen flow out the body |
| Scrotum:(male) | protective sac around surrounding testes |
| Testes:(male) | male sex gland, produces testosterone and sperm |
| Sperm:(male) | male reproductive cell, made in the testes |
| Urethra: (male) | duct (tube) where semen and urine travel through |
| Females: | Has only internal organs |
| Ovaries: (female) | female sex glands, produces estrogen, produce egg cells |
| Egg: (female) | female reproductive cell |
| Oviduct:(female) | tube that connects ovary to the uterus; where fertilization occurs; aka the Fallopian tube |
| Uterus:(female) | hollow organ with muscular walls; site where fertilized egg develops into an embryo |
| Vagina:(female) | tube connecting uterus to the outside of the body |
| Menstrual Cycle | every month female body prepares for pregnancy, if no pregnancy then repeats itself every 4 weeks when sperm fertilizes egg, zygote created, then becomes embryo, then fetus |
| How many chromosomes does a zygote have? | four |
| every embryo cell has how many chromosomes | 46 |
| the urinary system is responsible for: | removing waste from your body -solid waste is removed by large intestine -gaseous waste is removed by lungs -liquid waste is removed by sweat and the urinary system |
| the urinary system works with what? | the lungs, skin, and intestines |
| what are the four main parts of the urinary system? | the kidneys, ureters, bladder, and urethra |
| kidneys: | two bean shaped organs |
| blood is constantly filtering through: | the kidneys |
| kidneys filter a type of waste from your blood called: | urea |
| ureters | two thin tubes, 8-10 inches long |
| carry urea from what to what? | kidneys to bladder |
| muscles in ureter do what? | they tighten and relax to force urea into the bladder |
| bladder: | hollow muscular organ shaped like a balloon held in place by muscles and other tissues |
| urethra: | short tube exiting body where urea leaves the body final stop in urinary system |
| the integumentary system consists of: | hair, skin, nails, sweat glands |
| integumentary system is responsible for: | protecting the underlying tissue keeping internal temperature collecting sensory information from environmet |
| skin has three main layers: | the epidermis; outer layer the dermis; middle layer the subcutaneous tissue; underneath the dermis |
Created by:
sophiawilson
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