Chapter 15 Flashcards
What are 5 important tasks your heart accomplishes?
- Carrying oxygen from the lungs to the body cells
- Absorbing nutrients from food and delivering nutrients to body cells
- Carrying carbon dioxide from your cells back to your lungs to be exhaled
- Delivering other waster products to the kidneys for removal from the body
- Helping the white blood cells fight disease by attacking infectious organisms
What does the cardiovascular system depend on?
the heart and its system of blood vessels to deliver blood throughout the body
What are the 4 chambers inside the heart?
The two top chambers are called the atria and the two lower chambers are called the ventricles
What do electrical impulses stimulate?
The ATRIA contracts, forcing blood into the ventricles. These electrical impulses travel through the heart to an area between two ventricles. There they stimulate the muscles of the ventricles to contract
Pulmonary circulation
the process by which blood moves between the heart and the lungs
Blood is the fluid that delivers what?
oxygen, hormones, and nutrients to the cells and carries away waste.
Blood is made up of what components?
Plasma, Red blood cells, White blood cells, and Platelets
What are the three main types of blood vessels?
Arteries, Capillaries, and veins
Arteries
blood vessels that carry oxygenated blood away from the heart
Capillaries
small vessels that carry blood from arterioles and to small vessels called venules which empty into veins
Veins
blood vessels that return blood to the heart
lymph
the clear fluid that fulls the spaces around body cells
pathogen
a microorganism that causes disease
Blood pressure
a measure of the amount of force that the blood places on the walls of blood vessels
What does a blood pressure reading include?
two numbers, the first number measures your systolic pressure the second number measures your diastolic pressure
What are some disorders of the cardiovascular system?
Congenital heart defects, Heart murmurs, Anemia, Hemophilia, Leukemia,
What are the three lymphatic system disorders?
Tonsillitis, Immune deficiency, Hodgkin’s disease
What are the two parts of the process of respiration?
External respiration is where oxygen moves from the lungs into the blood and carbon dioxide moves from the blood into the lungs. In internal Respiration oxygen moves from the blood into the cells and carbon dioxide moves from the cells into the blood.
What fuels the brain?
Oxygen