The Ciculatory System
acts in a way that is similar to a transportation system
The 3 mmain parts of the circulatory system
Heart, system of blood vessels, and Blood
Septum (hint: seperates the ventricles)
Prevents the mixing of oxygen rich blood and oxygen poor blood in the heart
A protective sac of tissue the heart rests in
The thick layer of muscle in the heart
The top two chambers in the heart
The bottom two chambers in the heart
Where the pacemaker is located
The right atrium
Which pathway is the largest of the circulatory system?
The roads of a city are similar to what structures in the circulatory system?
What are the 3 main types of blood vessels?
Arteries, Capillaries, and Veins
What are the smallest vessels?
Which type of vessel has thick muscluar walls?
Which type of vessel has thin walls & is equipped with valves?
What is the function of valves?
To prevent the backflow of blood
The force of the blood on the arterie's walls
The tool used by medical workers to measure blood pressure
The first number, higher number, in a blood pressure reading (ventricles contract)
The second number, lower number, in a blood pressure reading (ventricles relax)
Another name for high blood pressure
Helps to regulate blood pressure by removing water from the blood
Fatty deposits on the walls of arteries lead to this condition
What can occur when a blood vessel that supplies the heart with blood & oxygen gets blocked?
Part of the heart muscle can die due to a lack of oxygen
Results when a vessel in the brain gets blocked (usually a clot)
The circulating fluid that is pumped through vessels in the body
The main functions of blood
collects nutrients, regulates body temperature, & fights disease/ infection
What are the 4 main parts of blood?
Red blood cells, White blood cells, Plasma, & Platelets
The liquid part of blood that consist mostly (90%) of water
Which type of blood cells are the most numerous in the body?
Red blood cells
If an infection occurs, which type of blood cell increases its numbers to fight off infection?
White blood cells
How much blood does the human body contain?
The iron containing protein that binds to oxygen
Which type of blood cell contains Hemoglobin?
Red blood cells
The part of the blood responsible for clotting
What are the 3 main groups of plasma proteins?
Albumins, Globulins, &Fibrinogens
WHich type of plasma protein helps regulate osmotic pressure & blood volume?
Whichg type of plasma protein helps fight viral & bacterial infection?
Which type of plasma protein is responsible for the ability to form a blood clot?
What is fribrinogen converted into?
a sticky mesh of fibrin filaments
What is the first step of blood clotting?
Platelets release clotting factors
A genetic disorder that results from a defective protein in the clotting pathway
The Lymphatic System
Collects the fluid lost by blood & returns it to the circulatory system
Swollen Lymph Nodes
Might be the sign of an infection
anothe rway to say swollen lymph nodes
A swelling of the tissue due to accumulation of excess fluid
The process by which oxygen & carbon dioxide are exchanged between cells, blood, & the air in the lungs
What controls breathing?
Nervous system and brain
The passageway for air & food
Anothe rname for trachea
Cilia & Mucus
Filter, warm, & moisten the air you breathe
Prevents the passage of food from the pharynx into the lungs
Where the actual exchange of aire takes place
consists of 2 highly elastic folds of tissue called vocal chords
Where inhaled are passes from the trachea and then on to the lungs
Contractions from this muscle force air into the lungs
Oxygen easily diffuses from the alveoli to the blood because...
there is more oxygen in the alveoli than the blood
What the 3 harmful substances found in tabacco
Nicotine, Carbon Monoxide, & Tar
What are the 3 diseases that can be caused from smoking?
Emphysema, Lung Cancer, & Heart Disease