chapter 9/10 anatomy and..
plasma makes up approximately
55% of blood by volume
the pacemaker of the heart is normally the
SA node
sternum
The bone lying anterior to the heart
tricuspid
The right atrioventricular valve
myocardium
The thickest layer of the heart
interatrial septum
The tissue separating the two upper chambers of the heart
the right atrium receives deoxygenated blood from
The vena cava
eosinophils
are phagocytic and are closely associated with allergic reactions
statements about leukocytes
are the largest circulating blood cells granulocytes have segmented nuclei neutrophils are the most numerous WBCs in circulation bacterial infections stimulate increased production of neutrophils
contraction of the upper chambers of the heart is called
atrial systole
the first "lubb" heart sound is associated with
atrioventricular valves closing
the role of hemoglobin in the red blood cell is to
carry on oxygen and carbon dioxide
When the ventricles are relaxed the semilunar valves are __ and the atrioventricular valves are ___
closed;open
platelets are involve in
coagulation process
Reduction is the hearts circulatory supply is called
coronary ishemia
thrombocytopenia is the
decrease of the amount of platelets
the best description of the heart is that it is
four paired pumps
substances that can be found in plasma
hormones, enzymes, oxygen
leukocytosis is the
increment of the amount of RBCs
monocyte
is the biggest white blood cell
an agranulocytes WBCs
monocytes, lymphocytes
the following are considered a heart layer
myocardium,endocardium,visceral pericardium or epicardium
granular white blood cells
neutrophil, eosinophil, basophil
white blood cells or leukocytes:
neutrophil,eosinophil,monocyte,lymphocytes,basophils
When the ventricles contract, the semilunar valves are ____ and the atrioventricular valves are ____
open;closed
Neutrophils are
phagocytic and are considered as our second line of defense against bacterial infection
blood is composed of
plasma and formed elements
neutrophil
protects us against bacterial infection
eosinophil
protects us against parasite infection
lymphocyte
protects us against viral infection
the second "dup" heart sound is associated with
semilunar valves closing
after coagulation blood is composed of
serum and formed elements
if the shape of RBCs shows significant variation from normal, the alternation is shape is called
sickle cell or Thalassemia
blood flow in the coronary arteries originates at the base of
the ascending aorta
The vessels that supply blood to the heart are called
the coronary artery
the vessels that drain the heart muscle are called
the coronary sinus
anemia is
the decrease of the amount of RBCs
if the normal pacemaker of the heart fails,
the job will be taken over by the AV node
The base of the heart is
the portion that is most superior
ventricular systole is triggered by
the purkinje fibers
platelets are
the smallest blood cells
The right atrium receives blood from
the superior and inferior vena cava
type AB positive blood is considered
the universal receptor blood type because it has no antibodies
structures contained in the mediastinum
thymus,trachea,esophagus,heart,large vessels
Relaxation of the lower chambers of the heart is called
ventricular diastole
blood circulates into the coronary arteries during
ventricular relaxation