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

Author Question: The period of time during the cardiac cycle when cells cannot respond to a stimulus, no matter how ... (Read 39 times)

debasdf

  • Hero Member
  • *****
  • Posts: 570
on: Jun 25, 2018
The period of time during the cardiac cycle when cells cannot respond to a stimulus, no matter how strong, is the relative refractory period.
 
  Indicate whether the statement is true or false

Question 2

Which of the following are semilunar valves?
 
  a. Aortic and pulmonic
  b. Aortic and tricuspid
  c. Pulmonic and mitral
  d. Tricuspid and mitral


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Edwyer

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jun 25, 2018
Answer to Question 1

F
During the absolute refractory period, the cell will not respond to further stimulation. This means that the myocardial working cells cannot contract and the cells of the electrical conduction system cannot conduct an electrical impulse, no matter how strong the stimulus.

Answer to Question 2

A
The pulmonic and aortic valves are semilunar (SL) valves. The semilunar valves prevent backflow of blood from the aorta and pulmonary arteries into the ventricles.


debasdf

  • Member
  • Posts: 570
Reply 2 on: Jun 25, 2018
YES! Correct, THANKS for helping me on my review

at

  • Member
  • Posts: 359
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

The four interacting parts of eukaryotic cells. The four interacting parts of eukaryotic cells.
Adults in late middle adulthood frequently look forward to spending more time with their partner Adults in late middle adulthood frequently look forward to spending more time with their partner
The dystrophin glycoprotein complex (DGC) in skeletal muscle cells The dystrophin glycoprotein complex (DGC) in skeletal muscle cells
Radiation Side Effects, Healing Time, and Intervention Radiation Side Effects, Healing Time, and Intervention
Four Possibilities in Judging the Presence or Absence of a Stimulus Four Possibilities in Judging the Presence or Absence of a Stimulus
Krebs cycle Krebs cycle
Video: Stomach peristalsis - Movement of Food Through the Small Intestine

For a complete list of videos, visit our video library