« previous next »

Author Question: The base of the heart is found at approximately the level of the _____ rib(s). a. first b. ... (Read 983 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?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

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?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

heart heart
Anatomy of Heart Anatomy of Heart
The recent mass upheavals in Tunisia, Egypt, Libya, Yemen, and Syria gave political scientists a cha The recent mass upheavals in Tunisia, Egypt, Libya, Yemen, and Syria gave political scientists a cha
Mechanisms of Action of Drugs Used for Heart Failure Mechanisms of Action of Drugs Used for Heart Failure
Heart Heart
The Effects of a Spinal Cord Injury by Spinal Level The Effects of a Spinal Cord Injury by Spinal Level
Video: Effect of the environment on coat color in the Himalayan rabbit Animation

For a complete list of videos, visit our video library