« previous next »

Author Question: What is the affect on the cardiovascular medullary centers when the cerebral carbon dioxide is low? ... (Read 14 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?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

The average person is easily confused by the terms pharmaceutics and pharmacology, thinking they are one and the same. Whereas pharmaceutics is the science of preparing and dispensing drugs (otherwise known as the science of pharmacy), pharmacology is the study of medications.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Disorders of the Cardiovascular System Disorders of the Cardiovascular System
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 ...
A cerebral angiogram of a healthy human subject. A cerebral angiogram of a healthy human subject.
Risk Factors for Cardiovascular Disease Risk Factors for Cardiovascular Disease
Soil and the terrestrial reservoir for carbon Soil and the terrestrial reservoir for carbon
Estimates of carbon stored in the plants and soils of different ecosystems. Estimates of carbon stored in the plants and soils of different ecosystems.
Video: Covalent bonds - role in the body

For a complete list of videos, visit our video library