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Definition
| a substance secreted by the liver; helps to separate lipids into small droplets to aid digestion |
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| the two branches of the tranches;function in carrying air to and from the lungs |
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| one of the many tiny branches from the bronchi; carries air to and from alveoli within the lungs |
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| a unit used to indicate the amount of energy released from food during cellular respiration |
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| thee breaking of food into smaller substances that the body's cells can use |
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| a group of tissues and organs that work together to digest an organism's food |
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| a part of the digestive tract; connects the pharynx and stomach in humans |
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| the organ that produces bile, helps to regulate substances in the blood, and stores minerals and vitamins |
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| an organ that exchanges gases between the atmosphere and the blood |
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| A slimy substance on the surface of mucous membranes and on the exterior of many fish and other aquatic animals; a thick sticky substance that filters the air enterings the body |
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| The system of organs that obtain oxygen from the air and eliminate carbon dioxide from the body; in humans, the lungs, tranchea, and other associated organs |
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| A digestive gland that secrete saliva into the mouth |
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| The digestive organ in which most of the digestion and absorption of food occurs |
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| A body region between the head and abdomen |
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| The tube that carries air between the pharynx and the lung; in insects, one of the tiny tubes that branch throughout the body, carrying air to the tissues |
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| A part of the brain the controls involuntary actions |
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Definition
| The part of the nervous system consisting of the brain and spinal cord |
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| The part of the brain that monitors and adjusts body activity involving muscle tone, body posture, and balance |
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| A type of nerouns in the retina that is sensitive to colors of lights |
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| The clear frontal portion of the sclera of the eye |
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| A membrane over the opening to the middle ear that sound waves cause to vibrate |
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| A species of hormones-producing glands |
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| A tube leading from the pharynx to the middle ear, equalizes air pressure in the ear |
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Definition
| A chemical produced by living cells which are transported to other body tissues, where it causes a specific effect |
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| the part of the ear consisting of the cochlea and the semicircular canals |
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| a hormone that is produced by the pancreas and that affects the amount of sugar in the blood |
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| the colored( pigmented) portion of the which regulates the size of the pupil |
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Definition
| a number of neurons arranged side by side and wrapped in a protective covering |
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Definition
| the group of organs that regulate the internal body functions and responses to external stimuli |
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| the external structure of the ear; consists of the ear canal and the flap of tissue that collects sound waves |
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| an endocrine gland attached to the lower part of the brain; secretes several hormones |
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| the circular opening in the iris of the eye |
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| an automatic, immediate, involuntary response to a stimulus |
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Definition
| the innermost layer of the eye; composed of lightsensitive neurons |
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| a neuron in the retina used for vision in dim light |
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| an organ that consists of many sensory receptors and various tissues needed to keep the receptors functioning; the eye ear, and similar |
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| a group of cells that sence taste |
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| an endocrine gland in the neck; secretes the hormone thyroxine |
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| an organ that supposedly has no function |
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