This topic contains a solution. Click here to go to the answer

Author Question: Normal aging of the cardiovascular system includes a. Strengthened heart contractions b. ... (Read 92 times)

nummyann

  • Hero Member
  • *****
  • Posts: 576
Normal aging of the cardiovascular system includes
 
  a. Strengthened heart contractions
  b. Decreased cardiac output
  c. Flaccid and thinned heart valves
  d. Dilation of blood vessels

Question 2

Physiological theories of aging focus on all of the following except
 
  a. Genetics
  b. Nutrition
  c. Wear and tear of the body
  d. Personality



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

nikmaaacs

  • Sr. Member
  • ****
  • Posts: 335
Answer to Question 1

B
Cardiac output is decreased as a result of the slowed heart rate and weaker cardiac contractions. This is not usually a noticeable problem unless older persons are exposed to stressors that exceed their reserves. Responses A, C, and D are incorrect. The aging heart is slower and weaker, the valves become thickened and more rigid, and blood vessels thicken and become less elastic.

Answer to Question 2

D
One physiological theory of aging focuses on genetics, stating that people are born with a genetic program that predetermines life span. Another focuses on a person's nutrition during his or her life span, and yet another focuses on the fact that all fine-tuned machineryand that includes body partswear out or become less effective as they are repeatedly used. Response Dpersonalityis incorrect because it does not relate directly to a physiological factor.




nummyann

  • Member
  • Posts: 576
Reply 2 on: Jul 11, 2018
Great answer, keep it coming :)


daiying98

  • Member
  • Posts: 354
Reply 3 on: Yesterday
:D TYSM

 

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Did you know?

Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

For a complete list of videos, visit our video library