This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The heart muscle commonly weakens with age. What is a consequence of this fact? A) The heart ... (Read 26 times)

sammy

  • Hero Member
  • *****
  • Posts: 818
on: Jul 11, 2018
The heart muscle commonly weakens with age. What is a consequence of this fact?
 
  A) The heart beats faster but pumps with less force.
  B) Fatty deposits and other substances clog narrowed coronary vessels.
  C) Blood pressure lowers because of systemic vasodilation.
  D) The time required for the heart's diastolicsystolic cycle decreases.

Question 2

Each of the blood vessel layers is affected differently by the aging process. Which would a nurse suspect is responsible for a patient's fibrosis?
 
  A) Tunica intima
  B) Tunica media
  C) Tunica adventitia
  D) Fibrosis is caused by an enlarged heart


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Smiles0805

  • Sr. Member
  • ****
  • Posts: 305
Reply #1 on: Jul 11, 2018
Answer to Question 1

A
Feedback:
The statement in choice B is true, but age-weakened heart muscle is not the cause. Blood pressure may actually rise as an effect of choice B. The opposite of the statement in choice D is true.

Answer to Question 2

A
Feedback:
The tunica intima, the innermost layer, experiences the most direct changes, including fibrosis, calcium and lipid accumulation, and cellular proliferation. The middle layer, the tunica media, undergoes a thinning and calcification of elastin fibers and an increase in collagen, which causes a stiffening of the vessels. The outermost layer, the tunica adventitia, is not affected by the aging process. In the absence of heart disease, heart size changes little with age.


sammy

  • Member
  • Posts: 818
Reply 2 on: Jul 11, 2018
Great answer, keep it coming :)

ryansturges

  • Member
  • Posts: 338
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

cat muscle anatomy lab6 cat muscle anatomy lab6
Calcium channels and muscle contraction: (a) Calcium channels open as the action potential travels ... Calcium channels and muscle contraction: (a) Calcium channels open as the action potential travels ...
David Usher - Black Black Heart David Usher - Black Black Heart
Testing the muscle strength of the wrist Testing the muscle strength of the wrist
Skeletal Muscle Fiber Types Skeletal Muscle Fiber Types
Layers of the Heart Wall Layers of the Heart Wall
Video: Physiology of Asthma

For a complete list of videos, visit our video library