This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: At what point in the figure do the atrioventricular valves close? a. B c. E b. D d. ... (Read 36 times)

acc299

  • Hero Member
  • *****
  • Posts: 569
on: Jul 16, 2018
At what point in the figure do the atrioventricular valves close?
 
  a. B c. E
  b. D d. F

Question 2

When does the atrial kick begin?
 
  a. Just before atrial systole
  b. During atrial repolarization
  c. During the impulse delay in the atrioven-tricular node
  d. Simultaneously with ventricular excitation


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

AngeliqueG

  • Sr. Member
  • ****
  • Posts: 343
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: C
The atrioventricular valves close at the beginning of ventricular systole. See Figure 9-22.

Answer to Question 2

ANS: C
As the impulse travels through the atrioventricular node, there is a 100-ms delay in conduction. This delay is important because it allows the atria to become fully depolarized and contract be-fore ventricular excitation begins. This allows the atria to contract and empty, which has been dubbed atrial kick, contributing to optimal ventricular filling.


acc299

  • Member
  • Posts: 569
Reply 2 on: Jul 16, 2018
:D TYSM

skipfourms123

  • Member
  • Posts: 343
Reply 3 on: Yesterday
Excellent

« previous next »
 

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?

More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

The wildcat Felis silvestris is a close relative and possible ancestor of the domestic cat. The wildcat Felis silvestris is a close relative and possible ancestor of the domestic cat.
Close-up of Pluto Close-up of Pluto
Three pathways of complement combined. (a) Figure shows a summary of how each pathway proceeds. (b) ... Three pathways of complement combined. (a) Figure shows a summary of how each pathway proceeds. (b) ...
Point of Intersection of 2 Circles Point of Intersection of 2 Circles
The cube of insulating material shown in the figure has one corner at the origin. Each side of ... The cube of insulating material shown in the figure has one corner at the origin. Each side of ...
Bayesian Analysis of the Genotype of II-2 in Figure A.4 Bayesian Analysis of the Genotype of II-2 in Figure A.4
Video: What are Strong & Weak Acids and How they're different?

For a complete list of videos, visit our video library