Chapter 6 Blood system Flashcards
arteriole
the smallest branch of an artery, which lead to capillaries
capillaries
tiny blood vessels where gases, nutrients and waste products are exchanged between the body cells and the bloodstream.
-the last point in the blood circulation, before heading back to the heart/lungs to be re oxygenated.
venule
this is the first place of entry for cells heading back to the heart.
-The smallest veins
vein
blood vessel that carries deoxygenated blood back to the heart
vena cavea
where blood enters the heart.
- superior venae cavae ( upper venae receives blood from upper body or above the heart )
- inferior venae cavae ( lower venae receives blood from lower body or below the heart )
pulmonary vein
where blood returns to the heart after being oxygenated from the pulmonary system (lungs) through the left atrium
plasma
watery salty fluid that makes up more than half the volume of blood.
- red and white blood cells are transported inside the plasma, as well as the platelets.
red blood cells (RBC’s, erythrocytes, or red corpuscles)
primary function is to carry oxygen to the tissues
-hemoglobin molecules that are on these cells give it the red color.
white blood cells (WBC’s, leukocytes, or white corpuscles)
these cells are charged with many roles
- destroying microorganisms (germs)
- producing antibodies which help resist infection
platelets
colts blood
Pulse
formed when the left ventricle contracts sending a pressure wave of blood through the arteries
peripheral pulses
- radial
- brachial
- posterior tibial
- dorsalis pedis
found on the outer reaches of the body
central pulses
- corotid pulse
- femoral pulse
found in the central part of the body
systolic blood pressure
pressure created in arteries during contraction or systole
diastolic blood pressure
when the heart is relaxed, the pressure remaining in arteries is called diastolic blood pressure
