bio team 3/30 Flashcards
5 main functions of the cardiovascular system
1)to transport oxygen and nutrients to cells of the body
2)to transport waste products of cellular metabolism to the proper organs for removal
3)to transport hormones to their target organs
4)to circulate antibodies to fight disease
5)to transport white blood cells
what’s the scientific name for red blood cells?
erythrocytes
what’s the scientific name for white blood cells?
leukocytes
red blood cells are about what % of blood volume?
44%
what are the 4 parts of the blood?
red blood cells, white blood cells, platelets, plasma
white blood cells are about what % of blood volume?
0.05%
platelets are what % of the blood volume?
0.5%
plasma makes up what % of blood volume?
55%
how does the blood travel through the blood vessels
arteries, arterioles, capillaries, venues, veins
systemic is what type of pathway?
body (heart->body->heart)
pulmonary is what type of pathway?
lungs (heart->lungs->heart)
does the blood have oxygen when I goes from the heart to the kidneys?
yes
does the blood have oxygen when I goes from the kidneys to the heart?
no
does the blood have oxygen when I goes from the heart to the lungs?
no
does the blood have oxygen when I goes from the lungs to the heart?
yes
“lubb” sound
tricuspid and bicuspid valves closing
“dubb” sound
semilunar valves closing
blood pressured measured by…?
systolic/diastolic
EKG
representation of electoral activity controlling coordination of atrial and ventricles
order of EKG
p wave, QRS complex, t wave
what is a p-wave?
fire AV node
what is a QRS complex?
ventricle contract
what is a t-wave?
ventricle rests
