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 36 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
:D TYSM

ecabral0

  • Member
  • Posts: 310
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

cat muscle anatomy lab7 cat muscle anatomy lab7
Effects of Elevation on Heart Rate and Ventilation Effects of Elevation on Heart Rate and Ventilation
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 ...
(B) The muscle segment with sarcomere. (B) The muscle segment with sarcomere.
legs muscle diagram legs muscle diagram
Structure of a skeletal muscle. Structure of a skeletal muscle.
Video: Chronology of leptin research (A history of leptin research)

For a complete list of videos, visit our video library