Anatomical Chart The Muscular System (Laminated)

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muscle imbalance — when one set of muscles is much stronger than adjoining muscles, the weaker muscles can become injured Skeletal muscles are named based on many different factors, including their location, origin and insertion, number of origins, shape, size, direction, and function. The intermediate part arises from the anterior surface of bodies of vertebrae C5-T3 and inserts into the anterior surface of bodies of vertebrae C2-C4. Although having the same parts, the vertebral groups are distinct from each other in terms of their appearance. This is all related to their function. For example, cervical vertebrae have the widest vertebral foramen and the smallest bodies, while lumbar vertebrae have the largest bodies and a very narrow vertebral canal. This is because the lumbar vertebrae bear much more weight than the cervical. Vertebrae also differ in the appearance of their processes and other anatomical features.

A muscle lying on the lateral side of the forearm. This muscle connects the humerus to the radius at the styloid process. It flexes the forearm. Also depending on the position of your hand, it can rotate the forearm in either direction. Coracobrachialis Related to the function of movement is the muscular system’s second function: the maintenance of posture and body position. Muscles often contract to hold the body still or in a particular position rather than to cause movement. The muscles responsible for the body’s posture have the greatest endurance of all muscles in the body—they hold up the body throughout the day without becoming tired. Sarcopenia: We gradually lose skeletal muscle mass as we age. Sarcopenia begins around age 40. By 80, we lose about 50% of our muscle mass. Sarcopenia can lead to loss of function, mobility, balance problems and falls. Obesity, hormonal changes and other health conditions can accelerate muscle loss.

This muscle arises from the lateral condyle of the tibia. The muscle passes over the ankle under a fibrous sheath called the extensor retinaculum and divides into four separate tendons. These tendons run along the top of the foot and insert into the four lesser toes. This muscle allows us to extend our toes and our foot (an action known as dorsiflexion) External oblique muscle Myasthenia gravis (MG): This autoimmune disease prevents muscles and nerves from communicating as they should. It leads to severe muscle weakness and fatigue. MG can make it difficult to move, walk, speak, chew, see, hold your head up or keep your eyelids open. It can even lead to severe breathing problems. Additionally, isolation movements are typically easier to perform when you’re fatigued, as you’re not stabilizing your entire body. This may allow you a few extra targeted sets at the end of a workout when you’re otherwise too exhausted to do another compound exercise. 4. Structure your workout to avoid overtraining

Your body has a maximum muscle building rate, and beyond that limit, excess calories will be stored as fat. If your goal is to have defined muscles, you want to avoid gaining too much body fat. Calories needed to gain muscleGordon, B. R., et al. (2018). Association of efficacy of resistance exercise training with depressive symptoms: Meta-analysis and meta-regression analysis of randomized clinical trials. Your quadriceps. This muscle group consists of four muscles in the front of your thigh which are among the strongest and largest muscles in your body. They work to straighten or extend your leg.

The digastric muscle is a small muscle situated below the mandible, that extends from the mastoid process of temporal bone to the chin. The muscle is composed of a posterior and an anterior belly, connected by an intermediate tendon, which represents their common insertion point. For example, to build bigger biceps, you need to perform exercises that work the biceps. This could be an isolated bicep exercise, such as a bicep curl, or a compound movement that uses the biceps, such as a pullup. A muscle of the hip originating on the lateral surface of the ileum and inserted in the greater trochanter of the femur. It abducts and medially rotates the by and is controlled by the superior gluteal nerve. Gracilis The proximal attachment of the muscle, often considered the anchor of movement. For instance, the bicep originates from the scapula and shoulder. Thus any movement performed by the biceps will bring the insertion closer to the origin. InnervationAt Kenhub, we know the importance of learning the muscles of the body - and we have the quizzes to prove it! You’ll find muscle quizzes on everything from the muscles of the arm and shoulder to the muscles of facial expression - and everything in between. Specialized Muscle Quizzes