chapter 3

Question 1

what does the respiratory consist of?

Answer 1

trachea lungs blood vessels

Question 2

what does the digestive system consist of?

Answer 2

mouth oesophagus stomach intestines liver

Question 3

what does the execratory system consist of?

Answer 3

kidneys bladder ureters uretha

Question 4

what does the endocrine system produce?

Answer 4

hormones

Question 5

what is a diaphragm?

Answer 5

large, thin muscle across the chest cavity under the lungs

Question 6

what happens when the muscles in your lungs and diaphragm contract

Answer 6

you inhale

Question 7

what happens when the muscles in your lungs and diaphragm relax

Answer 7

you exhale

Question 8

what is the difference between an open circulatory system and a closed circulatory system?

Answer 8

in an open blood is pumped into the body by cavities, when the heart relaxes the blood is drawn back towards the heart. in a closed blood is contained in blood vessels

Question 9

what is the difference between arteries and veins?

Answer 9

arteries carry blood away from the heart and veins bring the blood back to the heart

Question 10

what are the two different types of chambers in the heart?

Answer 10

there is to atria (atrium) which are the receiving chambers and two ventricles which are the pumping chambers