Bio103 Mod 1 Terms

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14 Terms

1

anatomy

study of structure of the human body

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2

physiology

study of body functions

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3

metabolism

total of all chemical functions in an organism

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4

anabolism

build large molecules

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5

catabolism

break down large molecules

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6

responsiveness

quick and brief responses to stimuli

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7

ecternal respiration

diffusion of oxygen and carbon dioxide between air in the lungs and the pulmonary capillaries

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8

internal respiration

diffusion of oxygen and carbon dioxide between blood and cells

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9

cellular respiration

uses oxygen to make ATP; products are water and carbon dioxide

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10

excretion

removing waste from the body

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11

homeostasis

maintenance of consistent internal environment in response to external conditions

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12

negative feedback

controls most body processes, fluctuates around set point, results in opposite direction of stimulus

(think sweating)

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13

positive feedback

occurs less frequently, stimulus is reinforced in one direction until climactic event that signals the body to return to homeostasis

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14

reproduction

primary role of human species; unique organ system

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