0
some calcium enters the cell from the extracellular space and triggers the release of larger amounts of calcium from intracellular stores
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What type of cells are found in the heart?
"I am not sure of names but i know that many cells make up the heart! Try to look on the Internet for your answer. Hope this helped a bit :)" You got to be kidding me... that wasn't helpful at all, but whatever. In the heart you can find: - Myocardiocytes - those are the cells performing the rhytmic contraction of the whole heart. - Endothelial cells - those are the supporting epithelial cells, insulating the chambers of the heart and the veins.
A quivering or spontaneous muscle contraction of the heart is called?
fibrillation
How are the cells in the biceps alike to the cells of the heart?
They are both made up of muscle cells. The heart is made of cardiac muscle, and the biceps are made of skeletal muscle.
What is cardiac muscle?
Cardiac muscle is a type of highly oxidative (using molecular oxygen to generate energy) involuntary striated muscle found in the walls of the heart, specifically the myocardium. Cardiac muscle cells are known as cardiac myocytes. Cardiac muscle is one of three major types of muscle, the others being skeletal and smooth muscle. The cells that comprise cardiac muscle are sometimes seen as intermediate between these two other types in terms of appearance, structure, metabolism, excitation-coupling and mechanism of contraction. Cardiac muscle shares similarities with skeletal muscle with regard to its striated appearance and contraction, with both differing significantly from smooth muscle cells. Coordinated contraction of cardiac muscle cells in the heart propel blood from the atria and ventricles to the blood vessels of the circulatory system. Cardiac muscle cells, like all tissues in the body, rely on an ample blood supply to deliver oxygen and nutrients and to remove waste products such as carbon dioxide. The coronary arteries fulfill this function
When are the atrioventricular valves closed?
During heart contraction
A group of conducting cells control heart muscle contraction and is known as the?
pacemaker cells
Where are the cells that initiate the stimulus for contraction of the heart muscle located?
SA node
What type of cells does the heart have?
The heart contains cardiac muscle cells. The cells are striated (the muscle fibers contain alternating light and dark bands). They differ from skeletal muscle in that it is an involuntary contraction, but they are similar in that they both have striations.
What are auto-rhythmic cells?
(pacemakers) refers to the cardiac muscle cells responsible for synchronizing the contractile cells to coordinate a heart contraction.
Each heart contraction begins in a small group of cardiac muscle cells called?
The sinoatrial node is the small group of cardiac muscles that initiates each heart contraction.
What does auto rhythmic mean?
Autorhythmic cells (pacemakers) refers to the cardiac muscle cells responsible for synchronizing the contractile cells to coordinate a heart contraction.
What does auto-rhythmic mean?
Autorhythmic cells (pacemakers) refers to the cardiac muscle cells responsible for synchronizing the contractile cells to coordinate a heart contraction.
What do the heart muscle cells do?
Cardiac muscle is what pumps the blood throughout the body. In short its contraction squeezes the juice in our water filled sacks. Brian M.D.
When you take someone's blood pressure you are measuring the pressure during the contraction and relaxation phases of the heart muscle?
true
What are murmurs?
Those which occur during relaxation of the heart between beats are called diastolic murmurs. Those which occur during contraction of the heart muscle are called systolic murmurs
What type of cells are found in the heart?
"I am not sure of names but i know that many cells make up the heart! Try to look on the Internet for your answer. Hope this helped a bit :)" You got to be kidding me... that wasn't helpful at all, but whatever. In the heart you can find: - Myocardiocytes - those are the cells performing the rhytmic contraction of the whole heart. - Endothelial cells - those are the supporting epithelial cells, insulating the chambers of the heart and the veins.
What role does the unique structure of cardiac muscle play in its function?
Cardiac muscle has what is known as intercalated disks. These connect heart muscle cells to each other, which allows an impulse (contraction) to move through the heart synchronously and therefore beat as it should.
