The heart is a major organ to which body system?
circulatory
besides the brain what structures are part of the nervous system?
spinal cord and nerves.
oxygen inhaled: 21% oxygen exhaled: 16%. how did the level change?
inhalation is grader than exhalation.
which system is needed for gas extange?
respiratory
the lungs belong to which body system?
respiratory system.
what is the main function of the immune system?
to identify/ destroy germs
when gases are exchanged and transported through the body what tow system's are working
raspatory and circulatory.
which term describes the maintenance of stable internal condition of the body
homeostasis
which body system is artery's, capillary's, and veins part of?
circulatory.
which body system deals with waste?
excretory
what body systems help the arm to bend?
skeletal and nervous. system
the excretory system containing the bladder and kidneys ____.
remove toxin and waste from the body through urine (pee)
a nerve cell sends a message to another one. what system is this part of?
nervous system
which body system makes gastric juices?
digestive
what path dose food take after being chewed up?
digestive system- circulatory system- body cells.
nurturance from digested food enter the blood stream by...
absorbtion
nerve cell, muscle, kidney, digestive track. which is part of the excretory system?
kidney
food nurturance enters the blood stream through...
absorption.
__, __, and __ are part of the skeletal system.
tendons, bones, and ligaments.
the amount of nitrogen you inhale is __% amount exhaled __%.
78% inhaled 78% exhaled