« previous next »

Author Question: The base of the heart is found at approximately the level of the _____ rib(s). a. first b. ... (Read 969 times)

rosent76

  • Hero Member
  • *****
  • Posts: 516
on: Jun 25, 2018
The base of the heart is found at approximately the level of the _____ rib(s).
 
  a. first
  b. second
  c. fourth
  d. fifth and sixth

Question 2

Rapid ejection of blood from the ventricular chambers of the heart occurs because the _____ and _____ valves open.
 
  a. pulmonic; aortic
  b. tricuspid; mitral
  c. pulmonic; mitral
  d. tricuspid; aortic


anoriega3

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jun 25, 2018
Answer to Question 1

B
The base of the heart is its upper portion and is formed mainly by the left atrium, with a small amount of right atrium. It lies at approximately the level of the second rib, immediately in front of the esophagus and descending aorta.

Answer to Question 2

A
When the ventricles contract, the pulmonic and aortic valves open, allowing blood to flow out of the ventricles.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Complementary base pairing Complementary base pairing
Summation of Heart Sounds, Pulmonic Ejection Click Summation of Heart Sounds, Pulmonic Ejection Click
Campylobacter bacteria are found in most chicken meat. If chicken meat is not well cooked or raw mea Campylobacter bacteria are found in most chicken meat. If chicken meat is not well cooked or raw mea
Stand over your base of support with the knees straight but not locked. Stand over your base of support with the knees straight but not locked.
Drugs in the Treatment of Heart Failure Drugs in the Treatment of Heart Failure
Schiff base Schiff base
Video: Chemical Changes

For a complete list of videos, visit our video library