The cardiovascular system study guide

Define Erythrocytes

• when blood pressure is at its lowest

• Red blood cells that carry O₂ in blood

• cell fragments

• The fluid portion of blood which is mostly water

Define Leukocytes

• the resistance to flow

• the process of blood clotting

• white blood cells that perform defensive functions in blood

• white blood cells attracting chemical stimuli

Define Platelets

• cell fragments in blood that help prevent blood loss

• blood vessels that carry blood away from the heart

• the process that helps blood clot quickly

• 50% blood

Define Hemopoiesis

• thin walled vessels that allow the exchange of gases

• proteins in the blood plasma which help initiate blood clotting

• circulation of the blood in the body

• The process by which the formed elements of blood are made In the body

Define The Systolic Phase

• blood that is denser than water

• the phase of the cardiac cycle in which the ventures contract

• circulation of blood

• the phase of the cardiac cycle in which the ventures relax

Define The Diastolic phase

• The phase of the cardiac cycle in which the ventures relax

• circulation of the blood through the tissues

• plasma is 50% water

• The phase of the cardiac cycle in which the ventures contract

Define Arterioles

• The smallest arteries that still have three tunics

• small veins that do not have have tunics

• one complete round of systolic

• a basement memebrane

Define Venules

• Small veins that do not have three tunics but instead have only an endothelium, a basement membrane, and a few smooth muscle cells

• small veins that are de oxygenated

• the phase on a cardiac cycle

• tissue walls that contain blood

Which of the following is not true about blood?

• Has greater density than water

• Has pH ranges between 6.5 and 7.5

• composed of both water and cells

• carries regulatory chemicals, ion, gases, proteins, and wastes

A region in a blood vessel has Prothrombinase in it. Which stage of homeostasis is taking place?

• Blood coagulation phase

• Vascular spasm

• Platelet plug formation

• vasoconstriction