Circulatory System
what percentage of body mass is blood
8%
do mature red blood cells have a nucleus
no
atrium
upper chamber of heart
between the chambers of the heart; prevent blood from flowing back into the chamber it hs already passed through
valves
how long do red blood cells live
100-120 days
which is a characteristic unique to the pulmonary circulation
an artery that originates at the right ventricle
a disorder in which there are few blood cells or too little hemoglobin in the blood is called
anemia
what is the largest blood vessel in the body
aorta
what is the name of the big blood vessel that transports blood away from the heart
aorta
blood vessels that move blood away from the heart are called
arteries
arteries may be clogged by fatty deposites on their walls, causing the condition known as
atherosclerosis
what are the upper chambers of the heart called
atrium
how is oxygen transported in the blood
attaching to hemoglobin on the red blood cells and carry oxygen
platelets are involved with
blood clotting
venticle
bottom chamber of heart
microscopic blodo vessels that connect arteries and veins are
capillaries
the exchange of nutrients and waste between blood and body tissues occurs across the
capillaries
what are the smallest blood vessels in the body
capillaries
what do platelets have to do with blood clotting
cell fragments that clot blood
how might a lack of dietary iron affect the oxygen-carrying capacity of the blood?
changes structure of hemoglobin to make it harder to carry oxygen
systolic pressure
contraction of ventricle (top number of blood pressure)
supply the heart with oxygen-rich blood
coronary arteries
list two structural differences and two functional differences between erythrocytes and leukocytes
erythrocytes-red blood cell, hemoglobin, no nucles moves oxygen leukocytes-white blood cells, immune system, nucleus, no hemoglobin
what is the term for the process by which blood cells are formed
hematopoeisis
when oxygen is carried by the blood, it is bonded to
hemoglobin
what is the relationship between an erythrocyte and hemoglovbin
hemoglobin rides on the red blood cell and carrys oxygen
which genetic diroder is characterized by abnormal or missing clotting factors
hemophilia
hgh blood pressure
hypertension
what is the funtion of the white blood cell
immune system response
your body reacts to infection by
inreasing its white blood cell count
oxygen-rich blood moves through the pulmonary vein to the lungs to the
left atrium
a disease in which one or more types of white blood cells are produced in greater numbers is called
leukemia
fight bacteria, viruses, and other foreign substances in the body
leukocyte
which type of blood cells fight infection
leukocyte
what subsatances foes blood carry to the cells in the body
nutrients, oxygen
sinoatrial node
pacemaker in right atrium
what is the liquid part of the blood called
plasma
what makes the majority of blood volume
plasma
what is plasma madeof
plasma, erythrocyte, leukocyte, platelets
odd-shaped cell fragments that help clot blood are called
platelets
what type of blood cell is responsible for clotting blood
platelets
distinguish between pulmonary circulation and systemic circulation
pulmonary- goes to lungs systematic- goes to body
which type of blood cell contains hemoglobin
red blood cell
diastolic pressure
relaxation of heart (bottom number of blood pressure)
blood from all parts of the body,except lungs, goes to the
right atrium
blood moves from the right atrium to the
right ventricle
what is most important to the heartbeat
sinoatrial node
where are worn out blood cells removed from circulation and destroyed
spleen
trace the flow of blood flow through the heart
superior vena cava ----->right atrium, tricuspid valve, right ventricle, lungs----->pulmonary veins----->left atrium, bicuspid valve, left ventricle-----> aorta
if someone is having a blood transfusion it is important to know
the donors blood type
from the right venticle, blood moves to
the pulmonary arteries
severe heart murmors may require surgery to replae
valves
blood vessels that carry blood to the heart
veins
which blood vessels transport blood back to the heart
veins (superior and inferior vena cava)
what is plasma
water part of the blood