« previous next »

Author Question: Which of the following structures help direct blood flow forward and prevent the backflow of blood ... (Read 71 times)

ashley

  • Hero Member
  • *****
  • Posts: 584
on: Jul 2, 2018
Which of the following structures help direct blood flow forward and prevent the backflow of blood within the heart?
 
  a. Septa
  b. The coronary arteries
  c. The atrioventricular valves
  d. The pulmonary vein and the pulmonary artery

Question 2

The walls of the capillaries are only one cell thick. This allows the exchange of nutrients and oxygen and waste products. The capillaries serve as the bridge between:
 
  a. arterioles and venules.
  b. the atrium right and the left atrium.
  c. the pulmonary vein and the pulmonary artery.
  d. arteries and veins.


Smiles0805

  • Sr. Member
  • ****
  • Posts: 305
Reply #1 on: Jul 2, 2018
Answer to Question 1

Answer: c

Answer to Question 2

Answer: a


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

Did you know?

Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

Forward ear position indicating alertness and pleasant attitude Forward ear position indicating alertness and pleasant attitude
Energy flow and chemical recycling in ecosystems. Energy flow and chemical recycling in ecosystems.
Structures of the Nail Structures of the Nail
The anatomical position: standing erect, gazing straight ahead, arms down at sides, palms facing for The anatomical position: standing erect, gazing straight ahead, arms down at sides, palms facing for
The Type of Blood Vessel Injury Often Affects the Nature of the Hemorrhage The Type of Blood Vessel Injury Often Affects the Nature of the Hemorrhage
Structure of hemoglobin, the oxygen-transporting protein of red blood cells. It consists of four glo Structure of hemoglobin, the oxygen-transporting protein of red blood cells. It consists of four glo
Video: Sigmoidoscopy

For a complete list of videos, visit our video library