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Muscle is excitable because it can be stimulated in order to cause contraction. Stimulation comes from the nervous system via electric signals/action potential that travels from neuron through axon to muscle tissue.
In-depth Details:
- Neuron sends action potential down its axon
- Once reaching the muscle tissue, the action potential stimulates release of Ach (acetylcholine)
- Ach crosses the synapse and binds to a muscle fiber (cell of muscle tissue),
- This stimulates action potential on the sacrolemma (plasma membrane of muscle cell)
- Action potential travels on the sacrolemma until it reaches a T-tubule
- Action goes down the T-tubule and into the muscle fiber
- This stimulates release of Ca2+ (calcium) from the sarcolemma
- Ca2+ binds with troponin
- Which stimulates tropomyosin to move out of the way so that actin and myosin can interact
- If ATP is available from mitochondria in muscle fiber, cross-bridge cycle occurs
- Contraction of muscle stops when the muscle is no longer stimulated from the nervous system
What else can I help you with?
Two basic tissue types are excitable?
excitable tissue is the tissue that can undergo rapid change in their membrane potential which is important to transport electrical signals. by this they can respond to stimuli. example of excitable tissue is nerves and muscle tissue ( skeletal,cardiac and smooth ) - by einstein jr
What kind of cells are excitable?
Excitable cells, such as neurons and muscle cells, have the ability to generate electrical signals called action potentials in response to stimuli. These cells play a crucial role in transmitting signals within the nervous system and facilitating muscle contractions.
What type of muscle tissue is self-excitable pacemaker cells gap junctions limited sarcoplasmic reticulum?
The type of muscle tissue that features self-excitable pacemaker cells, gap junctions, and a limited sarcoplasmic reticulum is cardiac muscle tissue. Cardiac muscle is involuntary and has specialized cells that generate electrical impulses, allowing for coordinated contractions. The presence of gap junctions facilitates communication between cells, ensuring synchronized heartbeats.
What are the two excitable tissue in human body?
The two excitable tissues in the human body are nervous tissue and muscle tissue. Nervous tissue is responsible for transmitting electrical signals throughout the body, facilitating communication between the brain and other body parts. Muscle tissue, which includes skeletal, cardiac, and smooth muscle, generates electrical impulses that lead to contraction and movement. Both tissues play crucial roles in the body's ability to respond to stimuli and maintain function.
Is bone an example of nerve tissue?
Bone is quite different from nerve tissue. It is not an excitable tissue.
What factors contribute to making a tissue excitable?
Factors that contribute to making a tissue excitable include the presence of ion channels, membrane potential changes, and the ability of the tissue to generate action potentials.
What type of muscle is excitable?
Excitable muscle refers primarily to cardiac and skeletal muscle. These types of muscle can respond to stimuli and generate action potentials, allowing for contraction. Smooth muscle also exhibits excitability, but it is less striated and functions involuntarily. Overall, excitable muscles are essential for movement and various physiological processes in the body.
Is nervous a tissue?
No, nervous is an adjective meaning sensitive or excitable.
What muscle contains self excitable cells?
The heart muscle contains self-excitable cells known as pacemaker cells. These cells generate electrical signals that control the heart's rhythm by initiating the contraction of the heart muscle.
What are the Components of muscle tissue in a meat?
skeletal muscle tissue,cardiac muscle tissue smooth muscle tissue
Is red blood cell membrane an excitable tissue?
No, the red blood cell membrane is not an excitable tissue. Excitable tissues are able to generate and conduct electrical impulses, which is not a function of red blood cells. Red blood cells are primarily involved in transporting oxygen and carbon dioxide in the bloodstream.
What are the only two types of cells that have excitable membranes?
The only two types of cells that have excitable membranes are neurons and muscle cells. Neurons transmit electrical signals in the nervous system, while muscle cells generate electrical signals that lead to muscle contraction.
