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30 to 50 hrs without oxygen
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∙ 11y ago
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Is Heart made up of striated or non striated muscles?
Heart muscle is striated but not in the same way that skeletal muscle is. Cardiac muscle is a type of involuntary striated muscle found only in the walls of the heart.Cardiac and skeletal muscle are similar in that both appear to be striated in that they contain sarcomeres. In striated muscle, such as skeletal and cardiac muscle, the actin and myosin filaments each have a specific and constant length on the order of a few micrometers, far less than the length of the elongated muscle cell (a few millimeters in the case of human skeletal muscle cells).The filaments are organized into repeated subunits along the length. These subunits are called sarcomeres. The sarcomeres are what give skeletal and cardiac muscles their striated appearance of narrow dark and light bands, because of the parallel arrangement of the actin and myosin filaments.However, cardiac muscle has unique features relative to skeletal muscle. For one, the myocytes are much shorter and are narrower than the skeletal muscle cells, being about 0.1 millimeters long and 0.02 millimeters wide .Furthermore, while skeletal muscles are arranged in regular, parallel bundles, cardiac muscle connects at branching, irregular angles.Anatomically, the muscle fibers are typically branched like a tree branch. In addition, cardiac muscle fibers connect to other cardiac muscle fibers through intercalcated discs and form the appearance of a syncytium (continuous cellular material).These intercalcated discs, which appear as irregularly-spaced dark bands between myocytes, are a unique and prominent feature of cardiac muscle .
The shape and size of cell vary according to the function it has to perform justify the statement taking muscle cell as example?
muscle cells are long so they can expand and contract.
What muscular system is made up of cell that are long thin and pointed?
Smooth muscle, found in bowel for peristalsis for example
How long do a cilia cell live?
Since ciliates tend to reproduce by fission, you can safely argue that they can live forever.
Long filamentous organelle with a banded appearance?
A long filamentous organelle with a banded appearance is a myofibril. A myofibril is a cylindrical structure that extends along the complete length of each muscle cell.
Can muscle cells form cardiac and skeletal muscles?
Skeletal muscle cells are much bigger than cardiac muscle cells. Skeletal muscle fibres are up to 100 micrometers in diameter and several centimeters long while cardiac myocytes are about 15 micrometers in diameter and about 100 micrometers long.
What does it mean if a muscle is striated?
Striated muscle includes cardiac muscle and skeletal muscle. Cardiac muscle is found only in the heart. Skeletal muscle is between bones and is voluntarily controlled. Examples of skeletal muscle are the sternoclydomastoid, biceps, obicularis oris, rectus femoris, etc.
How long can cardiac muscle be deprived of oxygen before the cardiac muscle cells start to die?
5 minutes
What is The type of muscle tissue forming the heart muscle?
Cardiac which is involuntary and striated muscle tissueInvoluntaryThe heart is composed of cardiac muscle tissue. This type of tissue contracts rhythmically without external stimulus. Each cell will have it's own pulse until it comes into contact with another cardiac muscle cell, then they will synchronize their movements with each other. Over all the heart automatically responds to your bodies need for increased oxygen by speeding up, then slowing back down as the need is satisfied.Cardiac muscle.Cardiac muscle tissue.cardiac muscle.The muscle in the heart is cardiac muscle. Cardiac muscle is a striated involuntary muscle tissue.Cardiac muscle, which is involuntary striated muscle.Cardiac muscle is found.Cardiac Muscle is found in the heart.Cardiac muscleThat would be cardiac, its only found in your heart.I only know one, but its the septum.cardiacCardiac muscle.Its called the cardiac muscle. Or it is the involuntary muscle. the cardiac muscle which is the muscle that can play a part in cardiac arrestThe (cardiac muscle) which is the involuntary muscle which you cannot control-Deontae cHeart muscles are long, striated, involuntary and fatigueless muscles. They are known as cardiac muslces. The heart is an organ as well as a muscle.cardiac muscleThe heart is made of cardiac muscle. It is involuntary muscle. That means that a person can not make it work by thinking about it. There are two other types. One is smooth muscle, which has no visible striations and it also involuntary. This is found in arteries and the walls of the digestive, urinary, other hollow organs and respiratory tracts and the irises of the eye. The last type is voluntary muscles such as found int muscles that move your bones. The heart is a MUSCLE.
Which cell types has the lowest proliferative ability?
Nonrenewing or permanent cells. They have no proliferative capacity. They never seem to decide. Have a long life span and live in protected environments. Eg. Neurons, cardiac muscle cells
The difference between the structure of cardiac muscle and skeletal muscle?
One key difference between cardiac and skeletal muscles is that skeletal muscles are controlled by the nervous system, while cardiac muscles move involuntarily. In addition, cardiac muscles are only found in the heart, while skeletal muscles are found throughout the entire body.
What causes skeletal and cardiac muscles to appear striated?
The myofibres cause skeletal and cardiac muscles to appear striated because they are cyndrical and long, extending across the entire surface of the muscle.
Why does the muscle cell have a long shape?
The cell is long because the , muscle needs to stretch and contract when you use that muscle. Therefore it needs to be long in order to stretch.
What kind of muscle contains cylindrical cells with branching ends?
Skeletal muscle tissueVoluntary or skeletal muscles contains long non branching cylindrical cells.
What is muscle tissue?
Muscle tissue accounts for nearly one-half of the total body weight and consists of three distinct subtypes: • striated (skeletal) muscle • smooth (visceral) muscle, and • cardiac muscle Each type of muscle cell is designed to perform one basic function. Striated muscle is attached to bones that move the skeleton. Smooth muscle is located in the walls of hollow internal structures, such as the intestines and blood vessels, allowing such organs to expand and contract. Cardiac muscle occurs only in the heart, where it forms the walls and enables the heart to pump blood. When viewed under the light microscope, striated muscle cells appear long and thread-like with alternating light and dark cross strips called striations. In contrast, smooth muscle has no striations, Cardiac muscle cells, each of which has a nucleus, are slightly striated. Each cardiac muscle cell tends to divide into a "y" or "x" shape, so that it has more than two ends and joins more than two other cells, i.e., it intercalates. The ends of one cardiac muscle cell are separated from adjoining cells by a band called an intercalated disk. Unlike skeletal muscle, smooth muscle and cardiac muscle are controlled involuntarily, i.e., an individual cannot stop or start the muscle action. highly cellular and well vascularized
Are Skeletal muscles cells are long and cylindrical with many nuclei?
Cardiac muscle fibers
How cardiac muscle fibers differ from the fibrs of skeletal muscle?
Both cardiac and skeletal muscle cells are striated and contract by the sliding filament mechanism. However, cardiac muscles cells are short, fat, branched, and interconnected unlike the long, cylindrical, multinucleate of skeletal muscle fibers.
