Author Question: The base of the heart is found at approximately the level of the _____ rib(s). a. first b. ... (Read 126 times)

rosent76

  • Hero Member
  • *****
  • Posts: 516
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
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
 

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

Did you know?

Your heart beats over 36 million times a year.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

For a complete list of videos, visit our video library