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1. The fish heart is a modified tube with _____________chambers arrayed one after the other.

2. The ____________ cycle consists of systole and diastole.

3. The spontaneous depolarization of cells in the ________________ passes through the left and right atria as a wave to finally cause the contraction of the heart.

4. ____________ is fluid formed from blood plasma minus the larger proteins.

5. A weakened section of an artery is known as a(n) ___________

6. The ________ is the amount of blood pumped by the heart each minute.

7._________ are subcellular packets of clotting enzymes.

8.________________ are basically packets of hemoglobin.

9. A normal value for blood pressure should be about

Answer: ______________________.

10. Veins contain _______________that assist in the movement of blood back to the heart.

11. The ______________delays the contraction of the ventricles to allow them to fill with blood.

12. During the cardiac cycle, contraction is called _____________and relaxation is called ___________.

13. The ________________ is the tough sac of connective tissue around the heart.

14. ___________________results when the blood's ability to carry oxygen is decreased.

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Nestor Rutherford
Nestor RutherfordLv2
28 Sep 2019

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Related questions

1. What is the significance of the ST segment?

a. ventricular depolarization

b. ventricular systole

c. atrial systole

d. atrial depolarization

2. Ventricular contraction is also known as ventricular __________.

3. Ventricular diastole is also known as ventricular __________.

4.

A nurse takes your blood pressure and tells you the numbers are 110/70. What are your blood pressures?

rev: 11_20_2014_QC_55932

a. Systolic = 110 mmHg, Diastolic = 70 mmHg

b. Diastolic = 110 mmHg, Systolic = 70 mmHg

5.

The brachial artery is the most common site of blood pressure measurement with the sphygmomanometer.

True

False

6.

Cardiac cycle is the ____________________________.

a. The volume of blood ejected by each ventricle in one minute

b. One complete contraction and relaxation of all chambers of the heart

c. The pressure blood exerts on the wall of blood vessels

d. Depolarization and repolarization of the ventricles

1. What is the importance of the valves of the heart?

  1. regulation of heart rate
  2. coordination of the contraction of ventricles
  3. allow blood to enter the heart from the arteries
  4. prevent backflow of blood from ventricles to atria

2. Why is blood pressure lower during diastole than duringsystole?

  1. More blood flows into the heart during systole than duringdiastole
  2. The contraction of the heart during systole increases the bloodpressure against arterial walls.
  3. The contraction of the heart during diastole decreases theblood pressure against arterial walls.
  4. The contraction of the heart during systole increases the bloodpressure against the valves separating the atria from theventricles.
  5. The relaxation of the heart during diastole decreases the bloodpressure against arterial walls.

3. Atherosclerosis can be caused by_____________?

  1. the blood vessels becoming to elastic
  2. the release of stress hormones such as epinephrine
  3. chronic hypertension
  4. a lack of calcium in the diet

4. If you become dehydrated, and your blood pressure drops. Howwill the kidneys respond?

  1. by producing a large amount of urine
  2. by returning more water to the blood stream and producing lessurine
  3. by shutting down.
  4. by moving fluid from the urinary bladder back into the bloodstream.

5. What is the site of gas exchange within the lungs?

  1. alveloi
  2. bronchioles
  3. larynx
  4. trachea

6. What would help destroy pathogens on food you eat?

  1. digestive enzymes
  2. inflammation
  3. the oil secreted onto your skin
  4. stomach acid

7. What led to the 2008 San Diego and 2015 measles outbreaks atDisneyland?

  1. poor hand washing by food workers
  2. California's measles vaccination rates had fallen bellow levelsrequired for heard immunity.
  3. the MMR vaccine is no longer effective.
  4. over-use of antibiotics.

1. Which of the following is the correct sequence of bloodflow?

a. heart --> atery --> arteriole --> capillary -->vein --> venule --> heart

b. heart --> vein --> venule --> capillary -->arteriole --> artery --> heart

c. heart --> artery --> arteriole --> capillary -->venule --> vein --> heart

d. heart --> artery --> venule --> capillary -->arteriole --> vein --> heart

e. heart--> artery --> capillary --> arteriole -->venule --> vein --> heart

2. What are the functions of the elastic fibers that are foundin the walls of ateries? (there may be more than one answer)

Select one or more:

a. they allow the artery to stretch and then recoil back to itsoriginal shape as blood is forcegully pumped from the heart intothe arteries

b. they allow arteries to lengthen as the volume of blood in thearteries increase

c. they help maintain a steady blood pressure during thedifferent phases of heart contraction

d. they smooth out the walls of the arteries to preventturbulent blood flow

3. Which of the following are functions of the lymphatic system?(there may be more than one answer)

Select one or more:

a. help fight infections and cancer

b. allows excess interstitial fluid (fluid found between thecells in your tissues) to get dumped back into your blood

c. brings large molecules from fat digestion into thebloodstream so that they can be processed and stored

d. all of the above are functions of the lymphatic system

4. Which of the following blood vessels bring newly oxygenatedblood from the blood vessels in the lungs back to the heart so thatthe heart can pump it to the rest of the body?

Select one:

a. aorta

b. inferior vena cava

c. pulmonary vein

d. pulmonary artery

5. Which of the following mechanisms help blood fight gravity sothat, for instance, it can return from blood vessels in your feetback into your heart? (there may be more than one answer)

Select one or more:

a. breathing allows the pressure in your chest to decrease andallow blood to flow up towards your heart

b. as you walk, the skeletal muscles in your legs contract andsqueeze the veins; since veins have valves, blood flows up anddoesn't backflow back down

c. the force of blood flowing out of the heart and into thearteries pushes all of the blood along, causing blood to return tothe heart

d. precapillary sphincters open to allow blood to flow backtowards the heart

6. The tricuspid and bicuspid/mitral valves prevent backflow ofblood from the atria into the ventricles.

Select one:

True

False

7. The following sequence represents the correct order of bloodflow through the heart:

inferior and superior vena cava --> right atrium --> rightventricle --> pulmonary artery --> lungs --> pulmonaryvein --> left atrium --> left ventricle --> aorta

Select one:

True

False

8. Capillaries are as wide as one red blood cell.

Select one:

True

False

9. The purpose of the coronary arteries is to bring oxygenatedblood to the walls of the heart so that the muscles in the heartwalls can contract.

Select one:

True

False

10. Vasodilation refers to the narrowing of blood vessels.

Select one:

True

False

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