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Unit 6: Skel. & Rep.

Unit 6: Musculoskeletal & Reproductive Systems

Skeletal System's Jobs provides shape and support, enables you to move, protects your organs, produces blood cells, stores materials
Joint a place where two bones come together
Movable joints allow the bones to make a range of movements depending on the type of joint
Immovable joints connect bones in a way that allows little or no movement
Red bone marrow produces the body's blood cells
Yellow bone marrow stores fat
Involuntary muscles not under your control (breathing and digesting food)
Voluntary muscles under your control (moving your arm or leg)
Skeletal muscle attached to the bones of your skeleton; voluntary movement
Cardiac muscle muscle in your heart, involuntary like smooth muscle, does not get tired, but looks like skeletal muscle under the microscope
Smooth muscle on the inside of many organs, such as the walls of the stomach and blood vessels; work automatically
Tendon strong tissue that attaches muscle to bone
Asexual reproduction Only 1 parent; all of the offspring are identical (clones)
Sexual reproduction 2 parents; all of the offspring have different genes
Number of chromosomes in human body cell 46
Number of chromosomes in human egg cell 23
Number of chromosomes in human sperm cell 23
Chromosome Package of DNA inside the nucleus of your cell
Testic Produce sperm (males only)
Prostate Produces liquid that mixes with the sperm to make semen (males only)
Scrotum Skin that protects the testis (males only)
Bladder Stores urine (pee) (males and females)
Urethra Tube that carries pee out of the body in females, and pee and sperm out of the body in males
Penis Organ where semen (a mixture of sperm and other liquids) leaves the body (males only)
Cervix Opening from the vagina to the uterus (females only)
Vagina Where the sperm enters and where the baby leaves the mother's body during birth (females only)
Uterus Where the baby grows and develops (females only)
Ovaries Store eggs. Release one egg per month into the fallopian tube starting into adolescence (females only)
Fallopian tubes Carry the egg from the ovary to the uterus (females only)
Created by: ksdsscience