A&P quiz 8 Flashcards
which of the following have significant functions mainly during bleeding?
platelets
which of the following is among the agranulocytes?
monocytes
which white blood cell has the greatest nuclear variations?
neutrophil
a _____ lacks a nucleus
red blood cell
which cell has a large nucleus that fills most of the cell?
lymphocyte
which leukocyte is the most abundant in a normal differential count?
neutrophil
red blood cells are also called ____
erythrocytes
the shape of a red blood cell can be described as a ________ disc
bilobed
the functions of red blood cells are _____
transport gases
___ is the oxygen-carrying substance in a red blood cell
hemoglobin
a mature red blood cell cannot reproduce because it lacks the _____ that was extruded during late development
nucleus
polymorphonuclear leukocyte is another name for a _______ with a segmented nucleus
neutrophil
normally, the most numerous white blood cells are ______
neutrophil
____ are normally the least abundant of the white blood cells
basophil
_______ are the largest of the white blood cells
monocytes
small cell fragments that function to prevent blood loss from an injury site are called _____
platelets
a normal blood total cholesterol level is less than 200 mg/dL
t/f
true
the antigens related to the ABO blood group are located
on the red blood cell membrane
blood type ___ is sometimes considered the universal donor within the ABO blood group
O
blood type ____ is sometimes considered the universal recipient within the ABO blood group
AB
hemolytic disease of the newborn could be of concern when an
Rh-positive fetus and an Rh-negative mother consition occurs
blood type B is the most common blood type found in the united states population
t/f
true
an individual with blood type O lacks both RBC antigens A and B
t/f
true
type A blood contains ____ antibody in the plasma
B
type B blood contains ____ antibody in the plasma
A
the Rh blood group was named after the ____
rheus monkey
of the antigens in the Rh group, the most important is _______
D antigen
if red blood cells lack Rh antigens, the blood is called _______
Rh-negative
the ______ is the inferior end of the heart that is bluntly pointed
apex
oxygen-rich blood is located in the
left side chambers
the ____ lines the heart chambers
serous pericardium
chordae tendineae connect the cusps of the AV valves to papillary muscles of the ventricles
t/f
true
the ____ of the conduction system is known as the pacemaker
SA node
the ____ of the conduction system is/are located throughout the ventricular walls
purkinje fibers
the first two heart sounds (lubb) occur when the
AV valves close
the depolarization of ventricular fibers is indicated by the ___ of an ECG
QRS complex
the dupp sound occurs when the semilunar valves are closing during ventricular diastole
t/f
true
the P wave of an ECG occurs during the repolarization of the atria
t/f
false
the period during which a heart chamber is contracting is called
sytole
the period during which a heart chamber is relaxing is called
diastole
during ventricular contraction, the AV valves are
closed
during ventricular relaxation, the AV valves are
open
the sound created when blood leaks back through an incompletely closed valve is called a _______-
murmer
