Smooth & cardiac muscle.
Cardiac muscle. Unlike skeletal and smooth muscle, the contraction of cardiac muscle is involuntary and requires stimulation from the nervous system. This ensures that the contractions of the heart are synchronized and coordinated.
cardiac muscle tissue
Yes, nerve stimulation is necessary for skeletal muscles to contract. This stimulation causes an action potential to travel down the motor neuron, leading to the release of acetylcholine at the neuromuscular junction, which triggers muscle contraction by causing calcium release in the muscle fiber. Without this nerve input, skeletal muscles would not be able to contract voluntarily.
uhhh
No, cardiac muscle fibers do not require outside nervous stimulation to contract. They have an inherent ability to generate action potentials due to specialized pacemaker cells, primarily located in the sinoatrial (SA) node. This intrinsic property allows the heart to beat rhythmically and autonomously, although the autonomic nervous system can modulate the heart rate and contraction strength.
Some muscles (skeletal muscles) will not contract unless stimulated by neurons; other muscles (smooth & cardiac) will contract without nervous stimulation but their contraction can be influenced by the nervous system. Thus, the nervous and muscle systems are closely interconnected.
contract weakly
Yes! Although we have total control over these muscles, they still need stimulation to contract. The difference with muscles that we don't control is that we decide if we want to make this stimulation.
Spindle shaped by faireena singh
it depends on how you use them like it you curl your arm that will be the biceps working alone but if you bench press the triceps and pectoralis muscles work together
is actively pumped into the extracellular fluid for storage.
is actively pumped into the extracellular fluid for storage.