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

Author Question: Which letter in the figure identifies the cardiac cells through which there is a 100-ms delay? a. ... (Read 30 times)

kamilo84

  • Sr. Member
  • ****
  • Posts: 495
on: Jul 16, 2018
Which letter in the figure identifies the cardiac cells through which there is a 100-ms delay?
 
  a. A c. C
  b. B d. D

Question 2

The fourth intercostal space at the left sternal margin is the site for which of the following elec-trocardiogram leads?
 
  a. V1 c. V3
  b. V2 d. V4


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mtmmmmmk

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: D
As the electrical impulse travels through the atrioventricular node, there is a 100-ms delay in the conduction. This allows the atria to become fully depolarized and contract before ventricular ex-citation begins. This allows the atrial contraction and emptying to contribute optimally to ventric-ular filling.

Answer to Question 2

ANS: B
V2 is placed in the fourth intercostal space, at the right sterna margin.


kamilo84

  • Sr. Member
  • ****
  • Posts: 495
Reply #2 on: Jul 16, 2018
Correct answers!


mtmmmmmk

  • Sr. Member
  • ****
  • Posts: 335
Reply #3 on: Jul 16, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

The arrangement of cells in the retina. The arrangement of cells in the retina.
Red Blood Cells Red Blood Cells
The primary response causes B cells to produce memory B cells and a few antibodies. The second ... The primary response causes B cells to produce memory B cells and a few antibodies. The second ...
Human Figure Human Figure
Identify the junction nodes in the circuit shown in Figure 21-1. Identify the junction nodes in the circuit shown in Figure 21-1.
Video: Predator- prey competition and symbiosis

For a complete list of videos, visit our video library