Lecture test 5
Red blood cells live around ___________ before they disintegrate.
120 days
The life expectancy of a red blood cell is
120 days
The normal drop of blood may contain how many white blood cells at a time?
5,000-10,000
Where does the repolarization of the atria occur?
QRS complex
What may be administered to a mother to prevent erythroblastosis fetalis?
RhoGAM
If you have no clumping in the anti-Rh, Anti-A and Anti-B typing sera, what type of blood do you have?
Type O negative
Systemic (body-wide) acute allergic response caused by allergens that directly enter the blood, as with certain bee stings or spider bites, is called ________.
anaphylactic shock
The condition called _____ is characterized by some defect or weakness in a vessel wall.
aneurysm
Which one of the following is NOT one of the nonspecific body defenses?
antibody production
A(n) ________ is any substance capable of mobilizing our immune system and provoking an immune response.
antigen
Which of the following is NOT a function of the blood?
Excretion of waste products
The study of immunity is called ________.
immunology
Bacteria and tumor cells are removed from lymph by ________.
lymph nodes
Which white blood cell has a large nucleus with little cytoplasm?
lymphocytes
The central cardiac control region is in the _____ of the brain.
medulla oblongata
Which blood cell is called a macrophage when located in the tissues?
monocytes
Mother's milk will provide the infant with
naturally acquired passive immunity
All of the following are symptoms of inflammation EXCEPT
numbness
Antibodies provided by serum from an immune donor or an animal donor do not challenge the B cells and thus provide ________.
passive immunity
Harmful or disease-causing microorganisms from which nonspecific defenses protect the body are called ________.
pathogens
Which of the following cells are fragments of megakaryocytes?
platelets
Which of the following contains blood with a relatively low oxygen content?
pulmonary artery
The central venous pressure is the pressure in the
right atrium
The electrical initiation of a heartbeat begins in the ____________chamber wall.
right atrium
The ________ duct drains lymph from the right arm and the right side of the head and thorax.
right lymphatic
The pulmonary semilunar valve prevents a back-flow of blood into the _____
right ventricle
The pulmonary semilunar valve prevents back flow of blood into the _____
right ventricle
All of the following are components of the second line of innate defenses EXCEPT
sebum
What lymphoid organ stores platelets and acts as a blood reservoir?
spleen
Which lymphatic organ's major job is to destroy worn-out red blood cells and return some of the products to the liver?
spleen
The _______ _______ artery supplies most of the intestines.
superior mesenteric
What makes red cells red?
the presence of oxygen bound to hemoglobin
The _____ artery divides into the ulnar and radial arteries.
brachial
The three arteries that arise from the aortic arch are the left subclavian, left common carotid, and _____ .
brachiocephalic
A heartbeat of less than 60 beats per minute is called
bradycardia
Which of the following is NOT one of the four most common indicators of the inflammatory response?
chills
Which are the first vessels to branch off the aorta?
coronary arteries
What is the primary function of a leukocyte?
defense and immunity
Which cell has no nucleus when it is mature?
erythrocyte
A deep wound to the upper thigh might damage the____________artery.
femoral
The longest vein in the body is the _____
great saphenous
Biliverdin and bilirubin are pigments that result from the breakdown of RBCs; biliverdin is __________ in color and bibrubin is___________in color.
greenish; orange
The superior mesenteric vein joins the splenic vein to form the _____ vein.
hepatic portal
If you have type O blood, which antibodies are circulating in your plasma?
Anti-A and Anti-B antibody
If a person has type B blood, what surface antigen do they possess and what antibody is found in their plasma?
B antigen and anti-A antibody
T-Cell maturation and selection occurs in the
thymus gland
The role of the ________ is to trap and remove bacteria or other foreign pathogens entering the throat
tonsils
Which lymphoid tissues trap and remove bacteria entering the throat?
tonsils
The _____ valve lies between the right atrium and right ventricle.
tricuspid
A stethoscope placed at the tip of the sternum will best be able to detect which sound?
tricuspid valve
Active immunity to tetanus, whooping cough, and polio can be artificially acquired when we receive ________.
vaccines
Starling's law of the heart states that the force of a heart chamber decreases when the chamber is full.
False
The Rh antibody normally occurs within an individual's plasma.
False
The coronary circulation has a rich array of anastomoses between its arteries and veins.
False
AIDS cripples the immune system by interfering with the activity of cells called ________.
Helper T cells
Which of the following statements does not describe erythrocytes?
They function to phagocytize invading organisms
Normally the hydrostatic pressure of the blood exceeds its osmotic pressure which causes a loss of fluids into the tissue spaces.
True
The circle of Willis represents an anastomosis of blood vessels supplying the cranial cavity and brain.
True
When an atrium is in systole the ventricle is in diastole.
True
When typing blood, the typing sera contains antibodies that will test for the different antigens on the surface of red cells.
True
If a person's cells possess the A antigen only, what is their blood type?
Type A
If you possess type A+ blood, which type of blood would be best suited for you to receive?
Type A+
The rarest blood type is
Type AB
The life expectancy of a white blood cell is
a few days to a few weeks
The thymus is most active during ________.
adolescence
The clumping that occurs outside of the body when the antibody combines with the correct antigen is called
agglutination
As a result of a blood reaction involving agglutinogens and agglutinins,
all of the above
Which factor assists venous return to the heart?
all of these
Redness, heat, swelling, and pain are the four most common indicators of ________.
inflammation
The first line of innate defenses against pathogens is
intact skin and mucous membranes
Small proteins known as ________ are secreted by virus-infected cells to help prevent viral replication.
interferons
What inhibits viruses from entering and attacking healthy cells?
interferons
The adaptive (specific) defense system ________.
issues an attack specific to particular foreign substances
Which organ has a primary role in stimulating blood cell formation?
kidney
The _______________ has the thickest wall because it pumps blood to the ___________
left ventricle; systemic circuit