SCIN132 Week 3 Quiz Latest 2017 (Perfect Answer)

Question

Question 1 of 32

3.0/ 3.0 Points

What is the bursting of a blood vessel called?

A.embolus

B.aneurysm

C.thrombus

D.myocardial infarction

E.stroke

Question 2 of 32

3.0/ 3.0 Points

At any one time, where is the majority of the blood found in the body?

A.veins

B.lungs

C.lymphatic vessels

D.capillaries

E.arteries

Question 3 of 32

3.0/ 3.0 Points

Blood pressure ______ with distance from the left ventricle while the total cross-sectional area of the blood vessels __________.

A.decreases, increases

B.increases, decreases

C.stays the same, decreases

D.stays the same, increases

E.decreases, stays the same

Question 4 of 32

3.0/ 3.0 Points

Which of the following blood vessels are small, thin, and porous enough to exchange substances at the tissue level of organization?

A.arterioles

B.capillaries

C.venules

D.small arteries

E.veins

Question 5 of 32

0.0/ 3.0 Points

What is the instrument called that is used to measure blood pressure?

A.stethoscope

B.CPR

C.sphygmomanometer

D.ECG

E.AED

Question 6 of 32

3.0/ 3.0 Points

Which of the following activities is not recommended for prevention of cardiovascular disease?

A.Know your cholesterol level.

B.Take antioxidant vitamins (A, E, and C).

C.Raise the LDL intake.

D.Use olive and canola oil rather than butter/cream.

E.Exercise moderately.

Question 7 of 32

3.0/ 3.0 Points

RBCs are better known as ________ and WBCs are better known as ___________.

A.lymphocytes, monocytes

B.erythrocytes, eosinophils

C.leukocytes, erythrocytes

D.erythrocytes, leukocytes

E.macrophages, neutrophils

Question 8 of 32

3.0/ 3.0 Points

After blood clots, the yellowish fluid that escapes from the clot is called

A.thrombin.

B.fibrinogen.

C.serum.

D.lymph.

E.plasma.

Question 9 of 32

3.0/ 3.0 Points

Hemoglobin that carries carbon dioxide is called

A.oxyhemoglobin.

B.betahemoglobin.

C.carbaminohemoglobin.

D.alphahemoglobin.

E.deoxyhemoglobin.

Question 10 of 32

3.0/ 3.0 Points

How many globin chains are found in hemoglobin?

A.0

B.1

C.2

D.3

E.4

Question 11 of 32

3.0/ 3.0 Points

Which term refers to uncontrolled growth of white blood cells?

A.leukemia

B.infectious mononucleosis

C.thrombocytopenia

D.hemophilia

E.thromboembolism

Question 12 of 32

3.0/ 3.0 Points

Certain complement proteins kill foreign microbes by

A.creating interferon.

B.causing them to burst.

C.inactivating their ribosomes.

D.agglutinating them.

E.destroying their nucleic acids.

Question 13 of 32

3.0/ 3.0 Points

The RhoGAM shot given to Rh negative mothers with an Rh positive fetus is an example of what type of immunity?

A.active

B.passive

C.nonspecific

D.general

E.neutral

Question 14 of 32

3.0/ 3.0 Points

Shaun was in need of a kidney transplant. What is the most important thing that needs to match between him and the kidney donor?

A.TCR

B.MHC

C.PCR

D.HCG

E.EKG

Question 15 of 32

3.0/ 3.0 Points

Which of the following is not a sign of inflammation?

A.redness

B.heat

C.swelling

D.pain

E.difficulty breathing

Question 16 of 32

0.0/ 3.0 Points

Which of the following is not an autoimmune disease?

A.hay fever

B.rheumatic fever

C.rheumatoid arthritis

D.systemic lupus erythematosus

E.myasthenia gravis

Question 17 of 32

0.0/ 3.0 Points

What is the name of the lymphatic vessels located in the small intestines?

A.tonsils

B.nodes

C.polyps

D.adenoids

E.Peyer patches

Question 18 of 32

3.0/ 3.0 Points

Which category of disease classification is described as having more cases than expected in a given period of time?

A.epidemic

B.outbreak

C.pandemic

D.None of these

E.opportunistic infection

Question 19 of 32

3.0/ 3.0 Points

There are normally 1-2 cases of measles per month in a particular city. However, in the month of September, there were 15 cases. Is this an epidemic?

A.YES

B.NO

Question 20 of 32

3.0/ 3.0 Points

In which phase of an HIV infection is the person typically asymptomatic?

A.acute phase (A)

B.chronic phase (B)

C.AIDS (C)

D.AIDS (D)

E.terminal phase

Question 21 of 32

0.0/ 3.0 Points

The HIV virus contains a genome composed of

A.double stranded DNA.

B.single stranded RNA.

C.double stranded RNA.

D.single stranded RNA.

E.one strand of DNA and one strand of RNA.

Question 22 of 32

0.0/ 3.0 Points

How long does the treatment for TB take?

A.1-2 days

B.1-2 weeks

C.1 month

D.2 months

E.6+ months

Question 23 of 32

3.0/ 3.0 Points

Research shows that in the absence of neural and hormonal influences, the sinoatrial (SA) node generates action potentials at a frequency of about 100 times per minute. However, the resting heart rate is about 70 beats per minute. What would the approximate heart rate be if the vagus nerve were

severed?

A.about 70 beats per minute

B.faster than 100 beats per minute

C.slower than 70 beats per minute

D.about 100 beats per minute

Question 24 of 32

0.0/ 3.0 Points

Which of the following types of muscle are capable of autorhythmicity?

A.Cardiac

B.Smooth

C.Skeletal

D.Cardiac and smooth

E.Cardiac and skeletal

Question 25 of 32

3.0/ 3.0 Points

What happens during Phase 3 of cardiac muscle depolarization?

A.Membrane potential falls slightly and then rebounds as potassium flow out of the cell decreases and calcium flows into the cell.

B."The plateau phase"; when the membrane remains in a depolarized state; potassium channels stay closed and calcium channels stay open.

C.Period of resting potential until the next depolarization.

D.repolarization to reach the resting membrane potential.

Question 26 of 32

0.0/ 3.0 Points

In the simulation, when vagus nerve stimulation was applied to the frog heart, _______.

A.the force of contraction increased and the heart rate slowed and eventually stopped

B.the heart rate slowed and eventually stopped

C.the force of contraction decreased

D.the force of contraction increased

Question 27 of 32

3.0/ 3.0 Points

In the simulation, delivering single shocks in succession to stimulate the frog heart _______.

A.resulted in fused tetanus

B.resulted in wave summation

C.did not increase the height of the ventricular systole wave

D.increased the height of the ventricular systole wave

Question 28 of 32

3.0/ 3.0 Points

The effect of vagus nerve stimulation on the heart is to _______.

A.decrease the heart rate

B.increase the heart rate

C.increase the heart rate and increase the force of contraction

D.decrease the heart rate and decrease the force of contraction

Question 29 of 32

3.0/ 3.0 Points

The repolarization of cardiac muscle is due to _______.

A.sodium exiting the cell

B.potassium exiting the cell

C.potassium entering the cell

D.sodium entering the cell

Part 6 of 7 - 0.0/ 8.0 PointsAnswer the following question in your own words without using any resources. Your answer should be written in complete sentences using correct grammar, spelling, and terminology.

Question 30 of 32

Briefly explain why wave summation and tetany would be deadly in cardiac muscle.

Question 31 of 32

Briefly explain how the sympathetic and parasympathetic nervous systems work together to regulate heart rate.