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