This topic contains a solution. Click here to go to the answer

Author Question: The _____ originate from small mounds of myocardium called papillary muscles and serve as anchors to ... (Read 64 times)

kshipps

  • Hero Member
  • *****
  • Posts: 571
The _____ originate from small mounds of myocardium called papillary muscles and serve as anchors to prevent the cusps of the AV valves from inverting into the atria.
 
  a. Purkinje fibers
  b. coronary sinuses
  c. coronary arteries
  d. chordae tendineae

Question 2

The inferior surface of the left ventricle is supplied by the _____ coronary artery in most of the population.
 
  a. left
  b. right



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Yixagurpuldink

  • Sr. Member
  • ****
  • Posts: 341
Answer to Question 1

D
Chordae tendineae are thin strands of connective tissue. On one end, they are attached to the underside of the AV valves. On the other end, they are attached to small mounds of myocardium called papillary muscles. Papillary muscles project inward from the lower portion of the ventricular walls. When the ventricles contract and relax, so do the papillary muscles. The papillary muscles adjust their tension on the chordae tendineae, preventing them from bulging too far into the atria.

Answer to Question 2

B
A branch of the RCA supplies the inferior surface of the left ventricle in approximately 85 of individuals.




kshipps

  • Member
  • Posts: 571
Reply 2 on: Jun 25, 2018
Great answer, keep it coming :)


Liamb2179

  • Member
  • Posts: 365
Reply 3 on: Yesterday
Gracias!

 

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

For a complete list of videos, visit our video library