Exam 4 Part 1 Flashcards
In a normal cardiac cycle, what two chambers of the heart contract last?
Right and left ventricles
Your patient’s blood pressure is 125/75. What is his systolic pressure?
125
What specific tissue makes up the myocardium?
cardiac muscle tissue
When referring to the heart, what is the anatomical term for contraction?
systole
What region of the heart is also known as the pacemaker?
right atrium
A person with Type B+ blood would have antibodies against what?
cell surface proteins for type A antigens
Someone who is O+ can donate to which blood types?
A+, B+, AB+, O+
What test is used to determine percentage of red blood cells?
hematocrit
Which formed element is involved in blood clotting?
platelets
Name the most common formed element in the blood.
red blood cells/erythrocytes
List one possible cause of polycythemia.
traveling from sea level to a higher altitude, like Denver
Which of the following helps to control platelet aggregation?
a. Streptokinase
b. Prothrombinase
c. Prostacyclin
d. Plasminogen
not a
The extrinsic pathway of blood clotting is initiated with:
a. Sluggish or slowed blood flow
b. Presence of outside tissue factors in the blood vessel
c. Collapse of a blood vessel
d. A rough spot in the blood vessel wall
b. Presence of outside tissue factors in the blood vessel
The process of fibrinolysis:
a. draws torn edges of damaged tissue closer together.
b. forms thrombi.
c. forms emboli.
d. dissolves clots.
d. dissolves clots.
Albumin, globulins, and fibrinogen are all:
a. involved in blood clot formation.
b. required for the development of immunity. c. plasma proteins.
d. used as energy sources by cells.
c. plasma proteins.
A disorder characterized by an excess of erythrocytes is known as:
a. polycythemia.
b. leukemia.
c. hemophilia.
d. anemia.
a. polycythemia.
Erythropoietin is a hormone that:
a. Stimulates production and maturation of myeloid stem cells
b. Stimulates maturation of reticulocytes
c. Stimulates production and maturation of leukocytes
d. Stimulate platelet formation
e. Stimulates production and maturation of megakaryocytes
a. Stimulates production and maturation of myeloid stem cells
Select the response that is not a function of the blood:
a. transports materials
b. helps regulate pH of body fluids
c. helps fight infections
d. converts excess nutrients into fats
d. converts excess nutrients into fats
A monocyte is:
a. granular
b. agranular
b. agranular
Formed elements constitute about __________% of the blood volume.
a. 25
b. 35
c. 45
d. 55
c. 45
A blood clot is formed of blood cells entangled in protein threads called:
a. fibrin.
b. albumin.
c. thrombin.
d. fibrinogen.
a. fibrin.
The purpose of hemostasis is to:
a. increase the flow of blood to the damaged area.
b. prevent blood loss from damaged vessels. c. decrease blood pressure.
d. pass leukocytes into body tissues.
not a
Erythrocytes live about:
a. 80 days.
b. 120 days.
c. 160 days.
d. 200 days.
b. 120 days.
The formed elements that transport oxygen and carbon dioxide are the:
a. erythrocytes.
b. basophils.
c. thrombocytes.
d. neutrophils.
a. erythrocytes.
