muscle pull

(noun)

A strain is colloquially known as a pulled muscle.

Related Terms

Examples of muscle pull in the following topics:

  • Pulled Muscles

  • Pulled Groin

    • A pulled groin muscle usually refers to a painful injury sustained by straining the hip adductor muscles.
    • A pulled groin muscle usually refers to a painful injury sustained by straining the hip adductor muscles.
    • Groin pulls are a common sports injury, especially in ice hockey and soccer.
    • Signs of a severe groin pull include pain while sitting or at rest and difficulty walking.
    • Severe groin pulls should be evaluated by a doctor, as they can very rarely include complete muscle rupture, in which case surgery may be necessary to reattach the torn ends of the muscle.

  • How Skeletal Muscles Produce Movements

    • Muscles exist in groupings that work to produce movements by muscle contraction.
    • For muscle pairings referred to as antagonistic pairs, one muscle is designated as the extensor muscle, which contracts to open the joint, and the flexor muscle, which acts opposite to the extensor muscle.
    • During flexing of the forearm the biceps brachii is the agonist muscle, pulling the forearm up towards the shoulder.
    • Exceptions include those muscles such as sphincter muscles that act to contract in a way that is opposite to the resting state of the muscle.
    • During flexing of the forearm, the brachioradialis and brachialis act as synergist muscles, aiding the biceps brachii in pulling the forearm up towards the shoulder.

  • Pulled Hamstring and Charley Horse

    • A strained hamstring, also known as a pulled hamstring, is defined as an excessive stretch or tear of muscle fibers and related tissue.
    • Straining of the hamstring , also known as a pulled hamstring, muscle pull, or Charley Horse is defined as an excessive stretch or tear of muscle fibers and associated tissues.
    • It is confirmed by pain during stretch and contraction of the muscle.
    • It can be also felt with a ping feeling, like elastic in the muscle.
    • The muscle is completely torn and there may be a large lump of muscle tissue above a depression where the tear is.

  • How Skeletal Muscles Are Named

    • Muscle fibers can often exert opposing effects during contraction, such as not pulling in the same direction depending on the location of the muscle fiber.
    • Because the fascicles pull on the tendons at an angle, they do not move the tendon as far as their parallel muscle counterparts.
    • In Pennate muscles, the tendon runs through the length of the muscle.
    • Fascicles pull on the tendon at an angle, thus not moving as far at the parallel muscles during a contraction.
    • However, these muscles tend to have relatively more muscle fibers than similarly sized parallel muscles, and thus carry more tension.

  • Control of Muscle Tension

    • These contractions extend from the muscle fiber through connective tissue to pull on bones, causing skeletal movement.
    • The pull exerted by a muscle is called tension.
    • If more cross-bridges are formed, more myosin will pull on actin and more tension will be produced.
    • This results in fewer myosin heads pulling on actin and less muscle tension.
    • Muscle tone is residual muscle tension that resists passive stretching during the resting phase.

  • Facial Muscles

    • Unlike other muscles, these muscles originate on the bone or fascia of the face and attach directly onto the skin, allowing it to be manipulated.
    • Nasalis - The largest of the nasal muscles.
    • Buccinator - This muscle is located between the upper and lower jaws in the cheek, deep to the other muscles of the face.
    • Located opposite to the levator anguli oris, it pulls the corners of the mouth downward, producing a frown.
    • When innervated, the risorius pulls the mouth back mimicking a smile, but does not affect the skin around the smile As a result, this facial expression is often interpreted as insincere.

  • Muscular Atrophy

    • Astronauts, free of the gravitational pull of Earth, can develop decreased muscle tone and loss of calcium from their bones following just a few days of weightlessness.
    • disease of the muscle itself.
    • Muscular dystrophy (MD) is a group of rare inherited muscle diseases in which muscle fibers are unusually susceptible to damage.
    • Muscles, primarily voluntary muscles, become progressively weaker.
    • In some types of muscular dystrophy, heart muscles, other involuntary muscles and other organs are affected.

  • ATP and Muscle Contraction

    • Muscles contract in a repeated pattern of binding and releasing between the two thin and thick strands of the sarcomere.
    • As myosin expends the energy, it moves through the "power stroke," pulling the actin filament toward the M-line.
    • When the actin is pulled approximately 10 nm toward the M-line, the sarcomere shortens and the muscle contracts.
    • Therefore, without ATP, muscles would remain in their contracted state, rather than their relaxed state.
    • The cross-bridge muscle contraction cycle, which is triggered by Ca2+ binding to the actin active site, is shown.

  • Muscles that Cause Movement at the Ankle

    • Functionally, it acts as a hinge, allowing dorsiflexion (pulling the foot upwards towards the lower leg) and plantarflexion (pulling the foot downwards away from the lower leg).
    • Soleus – The soleus is a large flat muscle which is the deepest lying of the superficial muscles.
    • Fibularis Brevis - The fibularis brevis muscles is the deeper and shorter of the two muscles.
    • Dorsiflexion of the Foot (pulling the foot upwards towards the leg)
    • Plantarflexion of the Foot (pulling the foot downwards away from the lower leg)