The Heart
How many chambers are in the heart?
Four
What do we inhale, and what do we exhale?
Inhale: Oxygen
Exhale: Carbon dioxide
High cholesterol is good for your heart. (True or False)
False - High cholesterol can cause plaque to build up in the walls of your arteries, and can lead to heart attack or stroke
Where does deoxygenated blood travel to be oxygenated?
The lungs
Blockages in the brain can lead to what?
Stroke
What is a normal blood pressure reading
120/80
What are tiny air sacs in the lungs in which gas exchange occurs called?
Alveoli
What is cholesterol?
Fat-like substance found in the blood
What part of the heart do the veins lead to?
Atrium/Atria
What's the difference between veins and arteries?
Veins carry blood to the heart; arteries carry blood away from the heart.
What is the Circulatory system comprised of? (3 answers)
Heart, blood vessels, and blood
What happens during gas exhange in the lungs?
Oxygen enters the blood, and carbon dioxide is removed as waste
Fried and greasy foods are all examples of what kind of cholesterol?
Low-density lipoprotein (LDL)
What is the main artery that carries blood from the heart to the body?
The aorta
What is the cardiorespiratory system comprised of? (3 answers)
The heart, lungs, and supporting structures (Blood vessels)
What is the biggest chamber in the heart?
Left Ventricle
What are the two zones of the respiratory system called?
1) Conductive zone
2) Respiratory zone
What is the role of HDL?
Carry low density lipoprotein away from the artery walls
What is the name of the structure in the throat that prevents food and liquid from entering into the lungs when swallowing?
The epiglottis
What is the conductive zone of the respiratory system?
The part of the respiratory tract that moves air into and out of the lungs
Where does blood come from in the Superior Vena Cava?
Upper extremities (head, neck, arms, chest).
Where does gas exchange occur in the lungs?
The capillaries of the alveoli
Poor diet and lack of exercise can lead to what?
High Blood Pressure
The pulmonary vein brings blood to where? Be specific
Left atrium
What do we measure blood pressure in?
Millimetres of Mercury (mmHg)