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Does a nerve provided impulses for many muscle fibers or just few?
A nerve can stimulate impulses to several muscle fibers. When muscle fibers are grouped they form a single muscle group like the biceps.
What position on the muscle cell where the nerve fibers connect?
The point where a nerve fiber connects to a muscle cell is known as the neuromuscular junction. This connection allows the nerve signal, or action potential, to be transmitted from the nerve to the muscle cell, triggering muscle contraction.
What muscle and nerve will you need to isolate to study the physiology of nerve fibers?
To study the physiology of nerve fibers, you would need to isolate a specific muscle and the nerve innervating that muscle. This allows for the investigation of the interaction between the nerve and muscle, observing the transmission of signals and studying the response of the muscle to nerve stimulation. Commonly studied muscles and nerves in this context include the gastrocnemius muscle and the sciatic nerve in animal models.
What does the neuromuscular junction connect to?
The nervous system and the muscular system are connected by the neuromuscular junction. The connection is done with synapses between nerve and muscle fibers.
Muscle fibers contract and relax in response to what?
nerve impulses
What nerve controls the sphincter pupillae?
The sphincter pupillae muscle is controlled by the parasympathetic fibers of the oculomotor nerve (cranial nerve III). Activation of these fibers causes constriction of the pupil (miosis).
What the function of the motor nerve fibers?
The motor nerve fibers help stimulate the Erector pili muscle. 1E19C8CC-7D89-BDE4-BA84-6679CBF217D2 1.02.28
What is the psoas nerve?
The psoas nerve is the nerve that innervates the psoas major muscle. It is formed by fibers of spinal nerves L2-L4.
When a single neuron sends a strong enough impulse to a muscle that how many muscle fibers does it cause to contract?
When a single neuron sends a strong enough impulse to a muscle, it can cause multiple muscle fibers within that muscle to contract. The specific number of muscle fibers that contract will depend on factors like the size of the motor unit and the intensity of the signal from the neuron.
Are tendons extensions of muscle fibers?
Tendons are not extensions of muscle fibers. Rather, they are separate bands of tough, fibrous tissue that connect muscle to bone and allow them to move in conjunction.
The point of contact between the nerve and the muscle fibers it stimulates is called a?
The point of contact between the nerve and the muscle fibers it stimulates is called a neuromuscular junction. This junction allows for communication between the nervous system and the muscular system, facilitating muscle contraction in response to nerve impulses.
Which cranial nerve control contraction of the circular smooth muscle of the iris?
The parasympathetic fibers of the oculomotor nerve (cranial nerve III) control the contraction of the circular smooth muscle of the iris, causing pupil constriction.
