The Circulatory System Flashcards
Differentiate pulmonary and systemic circulation.
Pulmonary: blood cycle to the lungs
Systemic: blood cycle around the body
Differentiate arteries and veins.
Arteries: oxygenated, blood from the heart
Veins: deoxygenated, blood from body
Where does the blood from the GI tract go? How?
To the liver through the hepatic portal vein
Where are water soluble lipids absorbed?
Bloodstream
Where are non water soluble taken to?
Lymphatic system -> back to the heart
Why is it good that non water soluble lipids are taken back to the heart?
Diluted in the big flow of blood
Where is the highest blood pressure?
Blood out of the aorta
What is the function of the lymphatic system?
Provides a one-way route for fluid from tissue space to enter blood
What does the lymph from the GI tract transport?
Transports fat and fat-soluble vitamins to the bloodstream via lymphatic vessels
What is the functional unit of the lungs?
Alveolis
What are the CO2/O2 exchanges in the lungs? Tissues?
Lungs: blood gives up CO2 and accepts O2 from air sacs of the lungs
Tissues: opposite
Name 3 characteristics of arteries.
Thick, elastic, smooth lining
Describe how atherosclerosis forms.
Lipid particles squeezing in arterial walls and staying there, being attacked by immune system –> inflammation –> becomes hard
Where does atherosclerosis form?
ONLY arteries
Describe the 3 damages of atherosclerosis.
1) Narrows the lumen
2) Walls aren’t elastic - RIGID
3) Walls aren’t smooth - ROUGH
