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Muscular System
The muscular system allows humans to move. Muscles also provide strength, balance and heat.
11,239 Questions
draw your human body and locate them
How does the frequency of stimulation affect the amount of force generated by the muscle?
Increasing the stimulus to an isolated muscle increases the strength of a contraction. A muscle begins to contract when the stimulus is given; however, if the muscle does not finish contracting before the next stimulus hits, then the force of the contraction will increase to finish the contraction. This is known as wave summation.
Superficial fibular nerve
What are the differences between flexors and extensors?
There are flexors and extensors in the forearm and they control the movements of the hand and wrist.
If you hold your hand out (with the palm down), the flexors allow your hand to bend downward. The extensors allow your hand to bend upward.
What provides nutrient blood to the heart muscle?
The blood supply that nourishes the heart is provided by the right and left coronary arteries.
Muscle cramps and muscle spasms are symptomes of which heat emergency?
Heat exhaustion
This is the loss of vital electrolytes which help contraction of muscles, these being potassium, sodium and magnesium.
What are the muscles around your neck called?
The muscles by your neck are called "Upper Trapezius" which gives the shape beside your neck more bulky.
What is musculotendinous unit?
In the wrist is a common site where pain arising from the musculotendinous units from originates from their bony attachments or from where they pass through tight fascial tunnels and this could be the onset of De Quervain's -AKA lay term blackberry thumb, women sprain or wrist tendinitis. Since around 1993, it has been one the most known hand injuries in the work force due to large amounts of repetitiveness moves or keyboarding ergonomically incorrectly. De Quervain's can simply be diagnosis with the gentle maneuver known as the Finklestein's test. Seek medical attention ASAP. 727.04
Does the impulse cross the neuromuscular junction when a muscle contracts?
No, the impulse traveling down the axon ends at the axon terminal but causes the axon terminal to release neurotransmitters. The neurotransmitters diffuse across the synaptic cleft causing the sarcolemma of the muscle to initiate its own impulse.
