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 67 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
Excellent

jackie

  • Member
  • Posts: 324
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

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?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Summation of Heart Sounds, Normal Physiological Split of S2 Summation of Heart Sounds, Normal Physiological Split of S2
Tissues of the heart. Tissues of the heart.
Conduction system of the heart. Conduction system of the heart.
Heart Model Heart Model
Heart Model Heart Model
Commonly Used Food Additives Commonly Used Food Additives
Video: Flexor reflex & Crossed extensor reflex

For a complete list of videos, visit our video library