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What type are of muscle conducts impulses along cellular processes?
Neurons, which are specialized cells in the nervous system, conduct impulses along their cellular processes, known as axons and dendrites. While neurons are not classified as muscle tissue, they play a crucial role in transmitting electrical signals throughout the body, facilitating communication between different parts of the nervous system. In contrast, muscle tissue itself, such as skeletal, cardiac, and smooth muscle, is responsible for contraction and movement, not impulse conduction.
A group of conducting cells control heart muscle contraction and is known as the?
pacemaker cells
What is the job of a leg muscle cell?
Receive stimulatory impulses to contract and inhibitory impulses to stop contraction from the neuromuscular junction. This contraction is carried out by Ca2+, ATP and the actin and myosin proteins in the cells, forming a sarcomere. By contracting and relaxing as a syncytium, the leg muscle can control the joint(s) it crosses and produce movement.
What allow the nerve impulses that initiate muscle contraction to travel along the sarcolmena?
Nerve impulses initiate muscle contraction by traveling along the sarcolemma through a process called depolarization. When a nerve impulse reaches the neuromuscular junction, it releases neurotransmitters that bind to receptors on the sarcolemma, leading to a change in membrane potential. This depolarization creates an action potential that propagates along the sarcolemma and into the T-tubules, allowing the signal to reach the muscle fibers and trigger contraction. Additionally, the presence of voltage-gated sodium channels facilitates the rapid transmission of these impulses.
What are minerals used for in the body?
Minerals are essential for various body functions, such as bone and teeth formation, nerve function, fluid balance, muscle contraction, and energy production. They are also important for maintaining proper pH levels, transmitting nerve impulses, and serving as co-factors for enzyme reactions in the body.
what ions are found specifically in bones and teeth are important in muscle contraction and nerve conduction?
The ions specifically found in bones and teeth that are crucial for muscle contraction and nerve conduction are calcium ions (Ca²⁺) and phosphate ions (PO₄³⁻). Calcium plays a vital role in muscle contraction by facilitating the interaction between actin and myosin filaments. Additionally, it is essential for neurotransmitter release in nerve cells during signal transmission. Phosphate is also important for energy transfer through ATP, which is necessary for both muscle contractions and nerve impulses.
Muscle contraction is triggered by impulses carried over what?
when ATP attaches to the myosin heah
What is the function of the intrinsic conduction system of the heart?
The intrinsic conduction system of the heart is responsible for initiating and coordinating the electrical impulses that regulate the heart's contractions. It includes specialized cardiac muscle cells that generate and conduct electrical signals to ensure the synchronized contraction of the heart muscle, allowing for efficient blood pumping.
What characterizes the normal operation of the heart?
each part contracts in a specific order. Contraction of the muscle is triggered by an electrical impulse. These electrical impulses travel through specialized cells that form a conduction system. Following this pathway ensures that contractions will
Why does tetradotoxin lead to death?
It blocks the channel for sodium on the sceletal muscle and inhibits therefor the transmission of electrical impulses that are necessary for muscle contraction
What is the state of slight contraction present in healthy muscles?
The continuous partial contraction of muscle is called muscle tone
What are fascicle in the heart for?
Fascicles in the heart are specialized bundles of muscle fibers responsible for conducting electrical impulses efficiently throughout the heart. They help coordinate the contraction of the heart chambers, ensuring effective and synchronized pumping of blood. This organized conduction system helps maintain the proper heartbeat rhythm and function of the heart.
Are the bundle of his is involve in pumping blood since it has no contractile proteins?
The bundle of His, or atrioventricular bundle, plays a crucial role in the conduction system of the heart, but it does not directly pump blood. It consists of specialized cardiac muscle fibers that conduct electrical impulses, which trigger the contraction of the heart muscle. While it lacks contractile proteins necessary for muscle contraction, its function is essential for coordinating the heartbeat and ensuring that the heart pumps blood efficiently.
What do impulses passed from motor neurons release?
Impulses passed from motor neurons release neurotransmitters at the neuromuscular junction. This leads to the stimulation of muscle fibers and ultimately results in muscle contraction.
Heart excitation nerve impulses that result in heart muscle contraction originates in?
the pacemaker area or the sinoatrial node
What minerals are needed for normal muscle contraction?
Calcium
What type are of muscle conducts impulses along cellular processes?
Neurons, which are specialized cells in the nervous system, conduct impulses along their cellular processes, known as axons and dendrites. While neurons are not classified as muscle tissue, they play a crucial role in transmitting electrical signals throughout the body, facilitating communication between different parts of the nervous system. In contrast, muscle tissue itself, such as skeletal, cardiac, and smooth muscle, is responsible for contraction and movement, not impulse conduction.
