Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
instrument to masure pressure sphygmomanoeter or blood pressure cofe |
|
|
Term
|
Definition
|
|
Term
|
Definition
hardening arteriosclerosis |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| also called the cardiovascular (CV) system |
|
|
Term
circulatory system is compsed of two parts: |
|
Definition
1.Pulmonary circulation 2. Systemic circulation |
|
|
Term
| The pulmonary circulation, between the heart and lungs transports what? |
|
Definition
| deoxygenated blood to the lungs to get oxygen and then back to the heart. |
|
|
Term
| The systemic circulation carry what? |
|
Definition
| carries oxygenated blood away from the heart to the tissues and cells, and then back to the heart. |
|
|
Term
| in addition to distributing oxygen and other nutrients, scuch as glucose and amino acids, the cardiovascular system collects what? |
|
Definition
| transport carbon dioxide and other waste products form metabolism to the lungs and kidneys, where they are eliminated from the body. |
|
|
Term
the wall of the heart is quite thick and composed of three layers |
|
Definition
1.endocardium is the inner layer of the heart that lines the heart chambers. It is a very smooth, thin layer that serves to reduce friction as the blood passes through the heart chambers. 2.myocardium is the thick muscular middle layer of the heart. Contraction of this muscle layer develops the pressure required to pump blood through the blood vessels. 3.epicardium is the outer layer of the heart.the outer layer of the sac is the parietal pericardium. Fluid between the two layers of the sac reduces friction as the heart beats. |
|
|
Term
| the heart is divided into four chambers or cavities |
|
Definition
two atria or upper chambers, two ventricles or lower chambers. |
|
|
Term
| the atria and ventricles are divided into right and left sides by wals called what? |
|
Definition
| interatrial septum and interventricular septum |
|
|
Term
|
Definition
is the receiving chambers of the heart blood returning to the heart via veins first collects in the atria |
|
|
Term
|
Definition
the pumping chambers. they have a much thicker myocardium and its contracton ejects blood out of the heart and into the great arteries. |
|
|
Term
| four valve of the heart that act as restraining gates to control the direction of blood flow are: |
|
Definition
1. Tricuspid valve: this is an atrioventricular valve means that it controls the opening between the right atrium and the right ventricle. 2.Pulmonary valve: this is a semilunar valve . the prefix semi- meaning half moon, and the term lunar, meaning moon , indicate that this valve looks like a half moon. located between the right ventricle and the pulmonary artery, this important valve allows blood to flow from the right ventricle into the pulmonary artery. 3.mitral valve: this is also called the bicuspid valve, indicating that it has two cusps. blood flows through this atrioventricular valve to the left ventricle and cannot back up into the left atrium. 4. aortic valve: blood leaves the left ventricle through this semilunar valve between the left ventricle and into the aorta. |
|
|
Term
| Deoxygenated blood from all the tissues in the body, except lung tissue, enters a relaxed right atrium via two large veins called |
|
Definition
| superior vena cava and inferior vana cava |
|
|
Term
| the right atrium contract and blood flows through what ? |
|
Definition
| tricuspid valve into the relaxed right ventricle |
|
|
Term
| the right ventricle than contracts and blood is pumped through what? |
|
Definition
| pulmonary artery which carries it to the lungs |
|
|
Term
| the left atrium receives blood that has been oxygenated by? |
|
Definition
the lungs this blood enters the relaxed left atrium from the four pulmonary veins. |
|
|
Term
| the left atrium contracts and blood flows through what? |
|
Definition
| the mitral valve into the relaxed left ventricle |
|
|
Term
| when the left ventricle contracts, the blood is pumped through what? |
|
Definition
the aortic valve and into the aorta, the largest artery in the body |
|
|
Term
| the aorta carries blood to where? |
|
Definition
| all parts of the body except the lungs |
|
|
Term
| the period of time a chamber is relaxed is called what? |
|
Definition
|
|
Term
| the period of time a chamber is contraction phase called what? |
|
Definition
|
|
Term
| what is the sinoatrial node or pacemaker ? |
|
Definition
where the electrical impulse begins.
|
|
|
Term
| the path that the impulses travel is as follows: |
|
Definition
- the sinoatrial node, or pacemaker, is where the electrical impulse begins.From the sinoatrial node or go into electricity travels through the atria, causing them to contract, or go into systole.
- Next, the atrioventricular node is stimulated.
3. This node transfers the stimulation wave to the bundle of His. 4.The electricla signal next travels down the bundle branches whithin the interventricular septum. 5. Finally, the pukinje fibers out in the ventricular myocardium are stimulted, which results in ventricular systole. |
|
|
Term
|
Definition
| is a measurement of the force exerted by blood against the wall of a blood vessel. |
|
|
Term
| during ventricular systole is |
|
Definition
| blood is undeer a lot of pressure from the ventricular contraction, giving the highest blood pressure reading--- the systolic pressure. |
|
|
Term
| during ventricular diastole |
|
Definition
| blood is not being pushed by the heart at all and the blood pressure reading drops to its lowest point---- the diastolic pressure. |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| pertaining to heart muscle |
|
|
Term
|
Definition
| process of listening to the sounds within the body by using a stethoscope |
|
|
Term
|
Definition
| slightly bluish color of the skin due to a deficiency of oxygen and an excess of carbon dioxide in the blood. it is caused by a variety of disorders, ranging from chronic lung disease to congenital and chronic heart problems |
|
|
Term
|
Definition
| expansion and contraction of a blood vessel wall produced by blood as it moves through an artery. pulse can be taken at several pulse points throughout the body where an artery is close to the surface. |
|
|
Term
|
Definition
instrument for measuring blood pressure. Also referred to as a blood pressure cuff. |
|
|
Term
|
Definition
| weakness in the wall of an artery that results in localized widening of the artery. Although an aneurysm may develop in any artery, common sites include the aorta in the abdomen and the cerebral arteries in the brain |
|
|
Term
|
Definition
| irregularity in the heartbeat or action. Comes in many different forms; some are not serious, while others are life threatening. |
|
|
Term
|
Definition
| Condition in which there is sever pain with a sensation of constriction around the heart. Caused by a deficiency of oxygen to the heart muscle. |
|
|
Term
|
Definition
Condition caused by the partial or complete occlusion or one or more of the coronary arteries. symptoms include a squeezing pain or heavy pressure in the middle of the chest (angina pectoris). A delay in treatment could result in death. Also referred to as a heart attack |
|
|
Term
|
Definition
| coronary artery bypass graft |
|
|
Term
|
Definition
|
|
Term
|
Definition
| percutaneous transluminal coronary angioplasty |
|
|
