1) Endocrine a) pregnancy b) kidneys c) blood d) hormones e) prokaryote 2) Excretory a) remove waste b) transport blood c) gas exchange d) absorb nutrients e) hormones 3) Vascular  a) hormones b) transport c) gas exchange d) kidneys e) eukaryote 4) Heart, blood, arteries a) circulatory b) respiratory c) excretory d) endocrine e) protein f) lipids 5) contractions a) respiratory system b) endocrine system c) circulatory system d) muscular system e) reproductive system 6) Absorb nutrients a) respiratory system b) excretory system c) digestive system d) muscular system e) nervous system 7) Brain, neuron, spinal cord a) respiratory system b) excretory system c) digestive system d) nervous system e) immune system 8) Uterus, ovum, sperm a) reproductive system b) excretory system c) digestive system d) nervous system e) immune system

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