« previous next »

Author Question: The base of the heart is found at approximately the level of the _____ rib(s). a. first b. ... (Read 180 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?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

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?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

The 20 amino acids found in living organisms The 20 amino acids found in living organisms
The yellow-winged darter, Sympetrum flaveolum, is a dragonfly found in Europe and mid and Northern C The yellow-winged darter, Sympetrum flaveolum, is a dragonfly found in Europe and mid and Northern C
Heart Model Heart Model
External anatomy of the heart External anatomy of the heart
Pathophysiology of heart failure. Pathophysiology of heart failure.
Heart Scribble Heart Scribble
Video: Oxygen - hemoglobin dissociation curve & Hemoglobin's affinity with oxygen - acidity

For a complete list of videos, visit our video library