What does the endocrine system regulate in the human body? Only short term activities by sending electrical signals Short term and long term activities by sending chemicals throughout the body Short term activities by sending chemicals to the brain Only long term activities by sending electrical signals

Short term and long term activities by sending chemicals throughout the body

What is a gland in the context of the human body? A type of cell that stores energy A nerve that transmits signals An organ that produces or releases a chemical A muscle that contracts to move bones

An organ that produces or releases a chemical

What are hormones in the context of the endocrine system? Electrical signals that travel through nerves Chemical messengers that travel through the blood Proteins that build muscle tissue Cells that fight infections

Chemical messengers that travel through the blood

What is a target cell in the endocrine system? Cells that fight infections Cells that store energy Cells that produce hormones Cells specialized to recognize a hormone's chemical structure

Cells specialized to recognize a hormone's chemical structure

What is the primary function of the thyroid gland? Produces insulin to regulate blood sugar Regulates the body's calcium levels Produces hormones that control energy-related reactions and other functions in cells Releases adrenaline in response to stress

Produces hormones that control energy-related reactions and other functions in cells

What is the function of the parathyroid glands? Control the body's metabolism Regulate the blood's calcium levels Produce adrenaline for emergency responses Release insulin to manage blood glucose

Regulate the blood's calcium levels

What is the role of the adrenal glands in the human body? Control energy-related reactions in cells Regulate the body's calcium levels Produce insulin to control blood glucose Release adrenaline, which triggers a response to emergencies or excitement

Release adrenaline, which triggers a response to emergencies or excitement

What is the primary function of the pancreas in the endocrine system? Regulates the body's calcium levels Controls energy-related reactions in cells Produces the hormone insulin and glucagon which controls the blood glucose level Releases adrenaline for emergency responses

Produces the hormone insulin and glucagon which controls the blood glucose level

Why are rainforests considered crucial for the Earth's ecosystem? They are the main source of global food supply They are the largest source of fresh water They are the primary habitat for polar bears They provide 20% of the Earth's oxygen supply

They provide 20% of the Earth's oxygen supply

Which of the following animals can be found in the rainforest? Camels, Scorpions, and Lizards Polar Bears, Penguins, Seals, and Walruses Kangaroos, Koalas, and Emus Sloths, Jaguars, Capybaras, Poison Dart Frogs, Spider Monkeys, and Macaws

Sloths, Jaguars, Capybaras, Poison Dart Frogs, Spider Monkeys, and Macaws

What is the primary reason for the disappearance of rainforests? Deforestation, which is the cutting down of trees Expansion of polar ice caps Natural disasters like hurricanes Increased rainfall

Deforestation, which is the cutting down of trees

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