« previous next »

Author Question: What is the affect on the cardiovascular medullary centers when the cerebral carbon dioxide is low? ... (Read 31 times)

cnetterville

  • Hero Member
  • *****
  • Posts: 547
on: Jul 16, 2018
What is the affect on the cardiovascular medullary centers when the cerebral carbon dioxide is low?
 
  a. Excitatory
  b. Inhibitory
  c. No affect
  d. Increased vascular tone

Question 2

Which of the following are true of the force against which the left ventricle must pump? 1. Referred to as left ventricular afterload. 2. Equivalent to systemic vascular resistance. 3. Helps to determine left ventricular stroke volume.
 
  a. 1 and 3 only
  b. 1 and 2 only
  c. 1, 2, and 3
  d. 2 and 3 only


babybsemail

  • Sr. Member
  • ****
  • Posts: 304
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: B
The cardiovascular centers are also affected by local chemical changes in the surrounding blood and cerebrospinal fluid. For example, decreased levels of carbon dioxide tend to inhibit the me-dullary centers.

Answer to Question 2

ANS: C
A major factor affecting stroke volume is the force against which the heart must pump. This is called afterload. In clinical practice, left ventricular afterload equals the SVR. In other words, the greater the resistance to blood flow, the greater is the afterload.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Long bones develop from several bony centers--one for the shaft and at least one for each end. The e Long bones develop from several bony centers--one for the shaft and at least one for each end. The e
Carbon dioxide. This molecule exhibits a nonpolar bond and results in a linear and symmetrical ... Carbon dioxide. This molecule exhibits a nonpolar bond and results in a linear and symmetrical ...
Sulfur Dioxide (SO2) Trend, 1970 - 2008 Sulfur Dioxide (SO2) Trend, 1970 - 2008
Major U.S. Centers of Cattle, Corn, Wheat, and Soybean Production Major U.S. Centers of Cattle, Corn, Wheat, and Soybean Production
Mr. jackson's lab result - Chest X-Ray, CT Scan of Brain, and Cerebral Angiogram Mr. jackson's lab result - Chest X-Ray, CT Scan of Brain, and Cerebral Angiogram
What is the mass of 1.20 x 1024 molecules of sulfur dioxide, SO2? What is the mass of 1.20 x 1024 molecules of sulfur dioxide, SO2?
Video: Secondary Active Transport

For a complete list of videos, visit our video library