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Describing the Muscular System. Specific Exercises for each muscle group.

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Introduction

´╗┐Muscular System The muscular system works with the skeletal system to produce movement of the body. The nervous system also works in conjunction with the muscular system to initiate movement in the muscles. The muscular system can be divided into 3 parts: smooth, cardiac and skeletal. Smooth muscle This type pf muscle is also known as involuntary muscle as we do not control the movement of them consciously. Examples of smooth muscle can be found in, the digestive system, circulatory system and urinary system. Multi-unit smooth muscle is composed of cells that can operate independently of one another. Visceral smooth muscle, on the other hand (often called single-unit smooth muscle), is composed of cells that, collectively, function together as a single unit. Some examples of multi-unit smooth muscle found in the body are the muscle in the iris of the eye (which causes the iris to either dilate or constrict), the muscles that cause erection of the hairs when stimulated by the nervous system (for instance, when you are so scared that your hair stands on ...read more.

Middle

Tendons are cords made of tough tissue, and they work as special connector pieces between bone and muscle. The tendons are attached so well that when you contract one of your muscles, the tendon and bone move along with it. Together, the skeletal muscles work with your bones to give your body power and strength. In most cases, a skeletal muscle is attached to one end of a bone. It stretches all the way across a joint (the place where two bones meet) and then attaches again to another bone. Skeletal muscles come in many different sizes and shapes to allow them to do many types of jobs. Some of your biggest and most powerful muscles are in your back, near your spine. Functions of skeletal muscle; -Producing movement. -Maintaining body posture. -Generating heat to keep us warm. -Storage of glycogen for energy. Types of Skeletal Muscle Fibre There are two types of skeletal muscle fibre. These are slow twitch fibres and fast twitch fibres. ...read more.

Conclusion

Gastrocnemius Plantar flexion flexes knee Large calf muscle Femur Calcaneus Running, jumping and standing on tip-toe Soleus Plantar flexion Deep to gastrocnemius Fibula and tibia Calcaneus Running and jumping Tibialis anterior Dorsiflexion of foot Front of tibia on lower leg Lateral condyle By tendon to surface of medial cuneiform All running and jumping exercises Erector spinae Extension of spine Long muscle running either side of spine Cervical, thoracic and lumbar vertebrae Cervical, thoracic and lumbar vertebrae Prime mover of back extension Teres major Rotates and abducts humerus Between scapula and hunmerus Posterior surface of scapula Intertubercular sulcas of humerus All rowing and pulling movements Trapezius Elevates and depresses scapula Large triangular muscle at top of back Continuous insertion along acromion Occipital bone and all thoracic vertebrae Shrugging and overhead lifting Latrissimus dorsi Extends and adducts lower arm Large muscle covering back of ribs Vertebrae and iliac crest Humerus Rowing movements Obliques Lateral flexion of trunk Waist Pubic crest and iliac crest Fleshy strips to lower eight ribs Oblique curls Gluteus maximums Extends thigh Large muscle on buttocks Ilium, sacrum and coccyx Femur Knee-bending movements, cyclling Circular and longitudinal smooth muscle layers. ...read more.

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