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When the nervous system signals a muscle to contract what ion channels open?
Wiki User
∙ 11y ago
sodium ion
Wiki User
∙ 11y ago
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Why do skeletal muscle cells need to be physically connected to the outside environment?
Skeletal muscle cells need to be physically connected to the outside environment to receive signals from the nervous system and to contract in response to those signals. The physical connection allows for the exchange of nutrients, waste removal, and the delivery of oxygen to the muscle cells. Additionally, the connection allows for the removal of heat generated during muscle contractions.
Which type of muscle CANNOT contract without being stimulated by the nervous system?
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.
Which sense organ helps us to feel things?
The nervous system helps your body to sense things around it by taking in input from receptor cells, which sense things, and transmit these signals at super-fast speeds to your brain, which processes the signals. These signals are then sent back through the nervous system to muscle cells or another form of output, such as salivary glands.
What Chemical enters a muscle cell upon excitation?
Acetylcholine is the chemical that crosses the synapse causing a muscle to contract. It is released due to an electrical impulse sent from your brain down your nervous system.
The only tissue in youur body that is able to contract or shorten?
All types of Muscle tissue contract... This includes Skeletal and Smooth muscle tissue.
What channels open when the nervous system signals a muscle to contract?
sodium ion
When the nervous system signals a muscle to contract the ion channels open?
sodium ion
What happens when these muscles contract?
When muscles contract, the brain sends signals through the nervous system to the motor neuron that supplies several muscle fibers. There are different versions of contraction, which includes voluntary and involuntary.
What muscle can contract without the need for the nervous stimulation?
Smooth & cardiac muscle.
Name a structure that receives signals from autonomic nervous system?
Smooth muscle, cardiac muscle, gland
Which type of muscle can contract without being stimulated by the nervous system?
cardiac muscle tissue
What nervous system controls the skeletal muscle contractions?
The central nervous system supplies the body and muscle contraction. Striated muscle (skeletal muscle) contract voluntary with exception of the heart which is striated involuntary smooth muscle.
Why do skeletal muscle cells need to be physically connected to the outside environment?
Skeletal muscle cells need to be physically connected to the outside environment to receive signals from the nervous system and to contract in response to those signals. The physical connection allows for the exchange of nutrients, waste removal, and the delivery of oxygen to the muscle cells. Additionally, the connection allows for the removal of heat generated during muscle contractions.
When does your muscle contract?
Voluntary muscle contraction is controlled by the central nervous system. Voluntary muscle contraction occurs as a result of conscious effort originating in the brain. The brain sends signals, in the form of action potentials, through the nervous system to the motor neuron that innervates several muscle fibers. In the case of some reflexes, the signal to contract can originate in the spinal cord through a feedback loop with the grey matter. Involuntary muscles such as the heart or smooth muscles in the gut and vascular system contract as a result of non-conscious brain activity or stimuli proceeding in the body to the muscle itself.
When a nerve signals a muscle to contract where is calcium released?
calcium released by sarcoplasmic reticulum.
What system stimulates muscle to contract and interprets information from sensory organs?
The central nervous system.
Neurotransmitter that triggers muscle contraction?
Acetylcholine (ah-Seh-til-KO-leen) is the organic molecule that triggers muscle contractions in humans. Acetylcholine acts on both the central nervous system (CNS) and on the peripheral nervous system (PNS). It is also the principal neurotransmitter in autonomic ganglia.
