7. The heart of organism is
made up of A) muscular tissue
B) connective tissue C) nervous
tissue D) epithelial tissue
O muscular tissue
O connective tissue
O nervous tissue
O epithelial tissue
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Answers
Answer:
The heart is enclosed in a protective sac, the pericardium, which also contains a small amount of fluid. The wall of the heart is made up of three layers: epicardium, myocardium, and endocardium. The heart pumps blood with a rhythm determined by a group of pacemaking cells in the sinoatrial node.
Vein: Superior vena cava, inferior vena cava, right and left pulmonary veins, great ca...
System: Circulatory
Artery: Aorta, pulmonary trunk and right and left pulmonary arteries, right coronary
Answer:
Muscular tissue
Explanation:
An organ is a combination of tissues that work together to perform a particular function. In the case of the heart, this function is pumping the blood throughout our body in and out.
The heart is basically made up of type of muscle tissue called "cardiac muscle". This muscle contracts when your heart beats up and also allowing blood to pump through your body.
The walls of our heart is made up of mainly three layers. The middle layer, called the myocardium which is largely a cardiac muscle. It is also the thickest muscle of the three layers.
Cardiac muscle is a special type of muscle tissue that is the only set up in your heart. The Coordinated condensation of the cardiac muscle, which is controlled by special cells called pacemaker cells that allows for our heart to pump blood as a single functional unit.
Inside your heart, there are four chambers. The top two chambers are called atria. The atria admit blood from other corridors of your body.
The next two chambers are called ventricles. They pump blood to another corridor of your body. Because of this, the walls of the ventricles are thicker, containing further cardiac muscle.
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