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science

QuestionAnswer
respiratory brings oxygen and removes carbon dioxide
circulatory transports materials throughout the body
circulatory system consists of heart blood blood vessels
digestive breaks down food and absorbs nutrients
excretory removes waste and maintains balance
excretory system consists kidney bladder nephrons
nervous controls and coordinates body systems
muscular allows movement and produces heat
diffusion movement of molecules from high to low
diffusion has no ATP
the nervous system detects internal and external changes
the fight or flight response increases heart and breathing rate
the circulatory system transports oxygen and nutrients
the circulatory system removes but distributes waste - heat
excretory system removes and regulates waste - water balance
kidneys = filter blood
nephron = functional unit of the kidney
negative feedback is when a change occurs
in negative feedback the body responds to reverse the change
examples of negative feedback are increased co2 = increased breathing rate increased salt - ADH released - kidneys conserve water
failure of homeostasis - decreased chance of survival
ph scale ranges 0-14
7 = nuetral
large ph changes will disrupt homeostasis
oxygen is required for ATP production
co2 is a waste of cellular respiration
hemoglobin carries oxygen
alveoli are the site of gas exchange
muscles move = ATP
change detected then negative feedback fixes it
oxygen+ATP= movement
positive feedback increases or continues original change
oxygen diffuses from the alveoli into the blood
hemoglobin binds oxygen in lungs to deliver to the cells
co2 diffuses from blood into alveoli
hemoglobin allows efficient oxygen transportation
cellular respiration is to release energy stored in glucose
cellular respiration produces ATP water carbon dioxide
cellular respiration needs glucose and oxygen
cellular respiration happens in the mitochondria
muscle cells require large amounts of ATP for muscles to contraction
muscle cells depend on oxygen glucose circulatory system for transportation
lack of oxygen + less ATP = muscle fatigue
Created by: luvzodior
 

 



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