ANSWERS PLAYBOOK
Which of the following are true concerning erythrocytes
A large part of their volume is hemoglobin their shape increases membrane surface
area
A serious bacterial infection leads to more of these cells in the blood
neutrophils
Sickling of RBCs can be induced in those with sickle-cell anemia by
Vigorous exercise
A child is diagnosed with sickle cell anemia this means that
Both parents carried the sickle cell gene
Which would lead to increased erythropoiesia
Reduction in respiratory ventilation
Which of the following does not characterize leukocytes
Cells found in largest numbers in the bloodstream
The blood cell that can attack a specific antigen is
lymphocyte
The leukocyte that releases histamine and other inflammatory chemicals is the
basophil
Leukocytes share all of the following features except:
distorted, lobed nuclei
In leukemia
The cancerous WBCs fail to specialize
A condition resulting from thrombocytopenia is
Hemophilia
Which of the following can cause problems in a transfusion reaction
B. Clogging of small vessels by agglutinated clumps of RBCs
If an Rh- mother becomes pregnant, when can hemolytic disease of the newborn
not possibly occur in the child?
if the child is Rh-, if the father is Rh-
, What is the difference between a thrombus and an embolus
a thrombus must travel to become an embolus
The plasma component that forms the fibrous skeleton of a clot consists of
fibrinogen
The normal ph of blood is
7.4
The heart is located the
mediastinum
The ____________is the protective connective tissue that surrounds the heart it is
divided into two layers
Pericardium
What are the three layers of the heart
epicardium, myocardium, endocardium
epicardium (visceral pericardium)
outer layer of the heart
Myocardium
muscular, middle layer of the heart
made up of cardiac muscle
myocardium
Chambers of the heart
right atrium, left atrium, right ventricle, left ventricle
What are the three factors that regulate stroke volume
preload, contractility, afterload
The epicardium of the heart is also known as what
visceral pericardium
The outer wall of the pericardium is a tough fibrous sac called
fibrous pericardium
What are the functions of the fibrous skeleton
-provides structural support for the heart
-anchors cardiocytes and gives them something to pull against