1) LOOKING AT THE PICTURE. Which two body systems interact keep blood calcium levels in homeostasis? a) Integumentary b) Endocrine c) Muscular d) Circulatory e) Respiratory f) Excretory 2) LOOKING AT THE PICTURE. What happens when blood calcium levels rise? a) Thyroid gland releases the hormone calcitonin b) Blood calcium starts to get made by thyroid c) Thyroid gland releases the parathyroid hormone d) The blood starts to make more hormones 3) What are three body systems that interact to keep body temperature in homeostasis? a) Circulatory b) Digestive c) Immune d) Excretory e) Nervous f) Integumentary 4) When your body temperature rises (goes up), what happens - a) Body starts to sweat b) Body shivers to generate heat c) Body starts to make more glucose d) Blood vessels become narrow e) Blood vessels become wider 5) When your body temperature drops (goes down), the brain - a) Sends messages to the reproductive system b) Makes hormones that travel to the skin c) Sends messages to the muscles and blood vessels d) Makes more blood to keep you warm 6) Which body system produces sweat? a) Circulatory b) Digestive c) Immune d) Excretory e) Nervous f) Integumentary 7) Which body system are blood vessels a part of? a) Circulatory b) Digestive c) Immune d) Excretory e) Nervous f) Integumentary 8) When your body temperature drops (goes down), what happens -  a) Body starts to sweat b) Body shivers to generate heat c) Body starts to make more glucose d) Blood vessels become narrow e) Blood vessels become wider 9) What are three body systems that interact to keep blood oxygen levels in homeostasis? (LOOK AT THE PICTURE) a) Skeletal b) Digestive c) Endocrine d) Circulatory e) Integumentary f) Nervous

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