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CH 12 L1 & 2 Vocab

Vocabulary on Human Body Systems

TermDefinition
Homeostasis the ability of an organism to maintain steady internal conditions when external conditions change.
Digestive System Responsible for getting food into and out of the body, breaking it down, and making use of the food to keep the body healthy.
Excretory System Responsible for removing solid, liquid and gas waste materials from the body.
Respiratory System Exchanges gases between the body and its environment.
Circulatory system Transports nutrients, gases, wastes, and other substances through the body.
Lymphatic System Responsible for helping your body maintain fluid homeostasis. It also helps the body defend against infection.
Lymphocyte a type of white blood cell that protects the body from infection.
Immunity The resistance to specific pathogens, or disease-causing agents.
Skeletal System made of mostly bones. Responsible for protecting internal organs, providing support, helping the body move, and stores minerals.
Muscular System made up of different types of muscle tissue. It works together with the skeletal system to help the body move.
Nervous System A group of organs and specialized cells that detect, process, and respond to information.
Neuron is a nerve cell, or the basic unit of the nervous system.
Reflex Automatic movement in response to a signal.
Voluntary Control Things that are not automatic. Things you choose to make happen like reading, talking, and walking.
Involuntary Control Things that do not require you to think about them to make them happen like breathing, digestion, and blinking.
Endocrine System Is responsible for using hormones to communicate with other organ systems.
Hormones Chemical signals released by organs of the endocrine system.
Created by: kfoulks
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