Search results
Results from the WOW.Com Content Network
The heart is a muscular organ found in humans and other animals.This organ pumps blood through the blood vessels. [1] Heart and blood vessels together make the circulatory system. [2]
Cardiac muscle (also called heart muscle or myocardium) is one of three types of vertebrate muscle tissues, the others being skeletal muscle and smooth muscle.It is an involuntary, striated muscle that constitutes the main tissue of the wall of the heart.
The atrium (Latin: ātrium, lit. 'entry hall'; pl.: atria) is one of the two upper chambers in the heart that receives blood from the circulatory system.The blood in the atria is pumped into the heart ventricles through the atrioventricular mitral and tricuspid heart valves.
Disney’s “Mufasa: The Lion King” is reigning over the holiday box office. The family film, which is a prequel to “The Lion King” (both the 1994 animated classic and the less canonical ...
The California DMV apologized for a license plate appearing to mock the Oct. 7 attacks on Israel. The car owner's son said it was being misinterpreted.
The cardiac conduction system (CCS, also called the electrical conduction system of the heart) [1] transmits the signals generated by the sinoatrial node – the heart's pacemaker, to cause the heart muscle to contract, and pump blood through the body's circulatory system.
Jill Jacobson, a longtime television actress known for roles on "Star Trek: The Next Generation" and the primetime soap opera "Falcon Crest," has died. She was 70. Jacobson died Dec. 8 in Los ...
A heart valve is a biological one-way valve that allows blood to flow in one direction through the chambers of the heart.A mammalian heart usually has four valves. Together, the valves determine the direction of blood flow through the heart.