Table of Contents
- 1 When a muscle is being stimulated but is not able to respond due to oxygen debt?
- 2 What is the mechanism by which the finger twitch amplitude increases when the stimulus current is increased?
- 3 When a muscle is being stimulated but it is not able to respond the condition is called?
- 4 What kind of stimulus travels from the motor neuron to skeletal muscle quizlet?
- 5 How do you describe the movement of the muscles in response to stimulus?
When a muscle is being stimulated but is not able to respond due to oxygen debt?
FATIGUE 5. When a muscle is being stimulated but is not able to respond because of “oxygen debt,” the condition is called _ A E ISOMETRIC 6. A(n) is a contraction in which the muscle does not shorten, but tension in the muscle keeps increasing.
What kind of stimulus travels from the motor neuron?
The signal, an impulse called an action potential, travels through a type of nerve cell called a motor neuron. The neuromuscular junction is the name of the place where the motor neuron reaches a muscle cell. Skeletal muscle tissue is composed of cells called muscle fibers.
What is the mechanism by which the finger twitch amplitude increases when the stimulus current is increased?
How does the finger twitch amplitude increase when the stimulus current is increased? The more the stimulus is increased the more the twitch – but at a certain point it would reach a peak where the twitch wouldn’t increase any further. Above a certain stimulus the amplitude of the figure twitch no longer increases.
What kind of stimulus electrical or chemical travels from the axon terminal to the Sarcolemma?
At the NMJ, the axon terminal releases a chemical messenger, or neurotransmitter, called acetylcholine (ACh). The ACh molecules diffuse across a minute space called the synaptic cleft and bind to ACh receptors located within the motor end-plate of the sarcolemma on the other side of the synapse.
When a muscle is being stimulated but it is not able to respond the condition is called?
when a muscle is being stimulated but is not able to respond due to oxygen debt, the condition is called… isometric contraction. a contraction which the muscle does not shorten but tension in the muscle keeps increasing.
Which of the following accumulates during muscle fatigue?
Lactic acid is formed and accumulated in the muscle under conditions of high energy demand, rapid fluctuations of the energy requirement and insufficient supply of O2. During intense exercise sustained to fatigue muscle pH decreases to about 6.4-6.6.
What kind of stimulus travels from the motor neuron to skeletal muscle quizlet?
An action potential travels along a motor neuron toward a skeletal muscle. Their point of connection is called a neuromuscular junction. At the junction, acetylcholine vesicles are released. You just studied 20 terms!
What happened to the muscle contraction response as the current stimulus increased from 0 mA?
What happened to the muscle contraction response as the current stimulus increased from 0 mA? At threshold, very few of the fibers were recruited and therefore contracting. At maximal stimulus, which is tetanus, all of the muscle fibers were recruited.
How do you describe the movement of the muscles in response to stimulus?
A twitch occurs when one muscle fiber contracts in response to a command (stimulus) by the nervous system. Myosin moves actin, releases and reforms cross-bridges many times as the sarcomere shortens and the muscle contracts. ATP is used during this phase and energy is released as heat.