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

Author Question: The second heart sound is associated with what mechanical event of the cardiac cycle? a. ... (Read 23 times)

luminitza

  • Hero Member
  • *****
  • Posts: 555
on: Jul 16, 2018
The second heart sound is associated with what mechanical event of the cardiac cycle?
 
  a. Atrioventricular valve closure
  b. Atrioventricular valve opening
  c. Semilunar valve closure
  d. Semilunar valve opening

Question 2

The semilunar valves close when which of the following occurs?
 
  a. The pressures in the arteries exceed those in the ventricles.
  b. The pressures in the ventricles and arteries become equal.
  c. The pressures in the atria exceed those in the ventricles.
  d. The pressures in the ventricles exceed those in the atria.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

TheDev123

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: C
Closure of the semilunar valves generates the second heart sound.

Answer to Question 2

ANS: A
Toward the end of systole, as repolarization starts (indicated by the T wave), the ventricles begin to relax. Consequently, ventricular pressures drop rapidly. When arterial pressures exceed those in the relaxing ventricles, the semilunar valves shut.


luminitza

  • Member
  • Posts: 555
Reply 2 on: Jul 16, 2018
:D TYSM

upturnedfurball

  • Member
  • Posts: 334
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

Three Chamber Heart -- Circulatory System Three Chamber Heart -- Circulatory System
Signs and symptoms of a patient with heart failure. Signs and symptoms of a patient with heart failure.
Menstrual cycle. Menstrual cycle.
Cell cycle Cell cycle
jellyfish life cycle jellyfish life cycle
Events of an Ovarian/Mentrual Cycle Lasting Twenty-Eight Days Events of an Ovarian/Mentrual Cycle Lasting Twenty-Eight Days
Video: Dissociative Disorders (Part 2)

For a complete list of videos, visit our video library