Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
46 Cards in this Set
- Front
- Back
Blood |
specialized connective tissue that contains cells suspended in a fluid matrix |
|
cardiovascular system |
internal transport network |
|
coagulation |
(blood clotting) a complex sequence of steps leading to the conversation of circulating fibrinogen into the insoluble protein fibrin |
|
embolus |
(bloot clot) a condition in which a drifting blood clot becomes stuck in a blood vessel, blocking circulation to the area downstream |
|
erthrocyte |
(red blood cells) transport oxygen and carbon dioxide |
|
fibrin |
interact and convert to form large, insoluble strands |
|
fibrinolysis |
begins with the activation of plasma protein plasminogen |
|
hematocrit |
the percentage of whole blood volume occupied by cellular elements |
|
hemoglobin |
account for over 95% of RBC intracellular proteins |
|
hemopoieses |
embryonic blood cells appear in the bloodstream during the 3rd week of development |
|
hemostasis |
the process that halts bleeding, prevents the loss of blood through the loss of blood through the walls of damaged vessels |
|
leukocyte |
(white blood cells) body's defense mechanism
|
|
plasma |
contains dissolved proteins rather than the network of insoluble fibers like those in loose connective tissue or cartilage |
|
platelets |
small membrane-enclosed packets of cytoplasm that contain enzymes and factors important to blood clotting |
|
serum |
fluid left after the clotting proteins are removed |
|
atrioventricular valve |
folds of fibrous tissue that ensure a one-way flow of blood from the atria to the ventricles |
|
atrium |
receives and collects blood |
|
cardiac cycle |
a complete heartbeat from its generation to the beginning of the next beat, and so includes the diastole, the systole, and the intervening pause. |
|
cardiac output |
The volume of blood pumped per minute by each ventricle of the heart |
|
diastole |
the phase of the heartbeat when the heart muscle relaxes and allows the chambers to fill with blood. |
|
electrocardiogram |
a record or display of a person's heartbeat produced by electrocardiography |
|
endocardium |
the thin, smooth membrane that lines the inside of the chambers of the heart and forms the surface of the valves |
|
epicardium |
a serous membrane that forms the innermost layer of the pericardium and the outer surface of the heart. |
|
intercalated disc |
microscopic identifying features of cardiac muscle |
|
myocardiogram |
the graphic record produced by a myocardiograph. |
|
pericardium |
the membrane enclosing the heart, consisting of an outer fibrous layer and an inner double layer of serous membrane. |
|
purkinje fibers |
split in atria and ventricles walls |
|
sinoatrial node |
a small body of specialized muscle tissue in the wall of the right atrium of the heart that acts as a pacemaker by producing a contractile signal at regular intervals |
|
systole |
the phase of the heartbeat when the heart muscle contracts and pumps blood from the chambers into the arteries. |
|
ventricle |
discharges and ejects blood |
|
anastomosis |
a connection made surgically between adjacent blood vessels, parts of the intestine, or other channels of the body, or the operation in which this is constructed |
|
arteriole |
a small branch of an artery leading into capillaries. |
|
artery |
any of the muscular-walled tubes forming part of the circulation system by which blood (mainly that which has been oxygenated) is conveyed from the heart to all parts of the body. |
|
blood pressure |
the pressure of the blood in the circulatory system, often measured for diagnosis since it is closely related to the force and rate of the heartbeat and the diameter and elasticity of the arterial walls. |
|
capillary |
any of the fine branching blood vessels that form a network between the arterioles and venules. |
|
hepatic portal system |
veins comprising the hepatic portal vein and its tributaries |
|
peripheral resistance |
total resisting opposing blood flow in the systemic circulation |
|
pulmonary circuit |
path deoxygenated blood takes through the heart to the lungs |
|
pulse pressure |
difference between the systolic and diastolic pressure readings. |
|
respiratory pump |
Intrathoracic pressure decreases during inspiration and abdominal pressure increase, squeezing local abdominal veins, allowing thoracic veins to expand and increase blood flow towards the right atrium |
|
systemic circuit |
part of your circulatory system that carries blood away from your heart, delivers it to most of your organs and tissues, and returns it to your heart again |
|
valve |
a device for controlling the passage of fluid through a pipe or duct, especially an automatic device allowing movement in one direction only. |
|
vasoconstriction |
the constriction of blood vessels, which increases blood pressure. |
|
vasodilation |
the dilatation of blood vessels, which decreases blood pressure. |
|
vein |
any of the tubes forming part of the blood circulation system of the body, carrying in most cases oxygen-depleted blood toward the heart. |
|
venule |
a very small vein, especially one collecting blood from the capillaries |