Muscles

A:

The muscles that extend the toes are the flexor hallucis longus, which flexes and extends the big toe, and the flexor digitorum longus, which flexes and extends the “lateral” four toes. The muscle known as the “flexor hallucis longus” is found on the posterior surface near the fibula and shaft.

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  • How is oxygen transported to the muscles?

    Q: How is oxygen transported to the muscles?

    A: As with all tissues dependent on a vascular supply, muscles depend on red blood cells to transport oxygen to them. Red blood cells, in turn, rely on an oxygen transport protein called hemoglobin to carry oxygen to all parts of the body.
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  • Do girls have groin muscles?

    Q: Do girls have groin muscles?

    A: Yes, girls and women have groin muscles. The groin is actually a group of five muscles that attach the thigh to the pelvis, and everyone has these muscles. They are also called the "adductors."
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  • How do muscles respond to exercise?

    Q: How do muscles respond to exercise?

    A: According to MedicineNet, muscles respond to exercise through contraction and resistance, both of which eventually result in increased muscular strength. Neural impulses direct fibers to contract, resulting in voluntary exercise. There are three different types of muscles that are worked during exercise, including skeletal, smooth and cardiac muscle, and each one responds differently to physical exercise.
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  • How many muscles move your hand?

    Q: How many muscles move your hand?

    A: According to Clinical Anatomy For Dummies, there are a total of 18 intrinsic muscles that work to move each hand. These muscles are in three groups: the thenar muscles, the hypothenar muscles and the interosseous muscles and the lumbricals.
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  • What are dynamic and static contractions?

    Q: What are dynamic and static contractions?

    A: A static (or isometric) contraction occurs when a muscle generates force while the joint angle remains the same. An example would be what happens when a person pushes against a wall. The muscles contract but the joint remains unmoved. A dynamic (or isotonic) contraction occurs when the force generated by the muscle causes movement in the joint. Dynamic contractions occur during most physical activities.
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  • Which muscles are used during a baseball swing?

    Q: Which muscles are used during a baseball swing?

    A: The whole body is involved in a baseball swing, with legs, forearms, wrists, abdominal muscles, hips and lower back muscles playing the most important roles, according to Bob Alejo for BodyBuilding.com. Hitting coaches concentrate on strengthening these and other muscles with weight training, calisthenics and resistance-based exercises.
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  • How many muscles does it take to smile or frown?

    Q: How many muscles does it take to smile or frown?

    A: It is difficult to say how many muscles it takes to smile or frown because all people make different expressions when smiling and frowning. What might be a thoughtful look for one person is another person's frown. The number of facial muscles present also varies between individuals.
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  • What is the function of the gluteal muscles?

    Q: What is the function of the gluteal muscles?

    A: The gluteus maximus muscle is responsible for the movement of the hips and thighs. Rising from a seated position, climbing stairs and standing are all aided by this muscle.
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  • What are the differences in structure and function of the three main muscle types?

    Q: What are the differences in structure and function of the three main muscle types?

    A: MedlinePlus explains that the human body has three different types of muscles: skeletal, cardiac and smooth. These muscle groups have different functions, are located in different parts of the body and have different structures.
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  • What is the tendon behind the knee called?

    Q: What is the tendon behind the knee called?

    A: According to the Cascade Wellness Clinic, the popliteal tendon is situated behind the knee. The tendon connects the popliteus muscle to the femur bone just above the knee.
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  • How do the muscles work in a bicep curl?

    Q: How do the muscles work in a bicep curl?

    A: The bicep, like other muscles, is primarily controlled by the cerebrum, a section of the brain located just above the brain stem and the cerebellum. The peripheral nervous system relies on the cerebrum to send signals to the bicep's short and long heads so that they function as a single muscle as the bicep contracts during the curl.
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  • What muscle group does the standing lateral raise primarily work?

    Q: What muscle group does the standing lateral raise primarily work?

    A: The standing lateral raise primarily works the lateral deltoid muscles, which are the muscles found on the sides of the shoulders. Synergists include the middle and lower trapezius and the anterior, or front, deltoid muscles.
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  • What muscles are used in sprinting?

    Q: What muscles are used in sprinting?

    A: The gluteus maximus, hamstrings and quadriceps are large muscle groups used while sprinting. Other large muscle groups used are the gastrocnemius and soleus and hip flexors.
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  • Which trunk muscle allows you to adduct your arms?

    Q: Which trunk muscle allows you to adduct your arms?

    A: The trunk muscles involved in arm adduction are the pectoralis major and pectoralis minor. Other muscles involved in arm adduction and transverse arm adduction are latissimus dorsi, pectoralis major, pectoralis minor, teres major, coracobrachialis and triceps brachii.
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  • What muscle extends the toes?

    Q: What muscle extends the toes?

    A: The muscles that extend the toes are the flexor hallucis longus, which flexes and extends the big toe, and the flexor digitorum longus, which flexes and extends the “lateral” four toes. The muscle known as the “flexor hallucis longus” is found on the posterior surface near the fibula and shaft.
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  • How much force can a human exert?

    Q: How much force can a human exert?

    A: Newton's second law of motion states that the force that an object exerts is equal to that object's mass times its acceleration. The amount of force that individuals can exert is directly proportional to their mass and the speed at which they are moving.
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  • How many muscles are in a human tongue?

    Q: How many muscles are in a human tongue?

    A: Despite myths hailing it to be the strongest single muscle in the body, the human tongue is actually comprised of eight different muscles, according to the Richmond Smile Center. The muscles that comprise the tongue are skeletal muscles.
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  • What muscles are used when walking?

    Q: What muscles are used when walking?

    A: The muscle groups used when walking include the calf muscles, tibialis anterior and ankle extensor muscles, hamstring muscles and quadriceps muscles, according to HowStuffWorks. The hip flexor muscles, buttock muscles, abdominal muscles, and arm and shoulder muscles are also used.
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  • How much does the human heart weigh?

    Q: How much does the human heart weigh?

    A: The average weight of a man’s heart is 10 ounces, and the average weight of a women’s heart is 8 ounces. The average heart rate for women is 78 beats per minute, and the average heart rate for men is 70 beats per minute.
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  • What are the major muscles in the body?

    Q: What are the major muscles in the body?

    A: The major muscle groups in the body are the abdominal muscles, biceps, deltoids, erector spinae, gastrocnemius, soleus, gluteus, hamstrings, latissimus dorsi, rhomboids, obliques, pectoralis, quadriceps, trapezius and triceps. Each muscle group contributes to a variety of different functions, such as walking, climbing and sitting.
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  • When will a woman's biceps start to grow?

    Q: When will a woman's biceps start to grow?

    A: Women are incapable of developing their muscles, including the biceps, to the extent of most men due to their lack of testosterone. A woman's biceps, however, can still grow larger and stronger through exercises, such as the dumbbell curl and the chin-up that target this muscle and related muscles.
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