Anatomical Chart The Muscular System (Laminated)

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A skeletal muscle attaches to bone (or sometimes other muscles or tissues) at two or more places. If the place is a bone that remains immobile for an action, the attachment is called an origin. If the place is on the bone that moves during the action, the attachment is called an insertion. The triceps brachii happens to have four points of attachment: one insertion on the ulna and three origins (two on the humerus and one on the scapula). 2. Muscles Act on Synovial Joints to Move the Body Type II A fibers are faster and stronger than Type I fibers, but do not have as much endurance. Type II A fibers are found throughout the body, but especially in the legs where they work to support your body throughout a long day of walking and standing. Clinical Significance [ edit | edit source ] Muscle strength testing can help diagnose many problems in which weakness plays a role. Careful technique is important for ensuring valid and reproducible results. [ edit | edit source ] The semispinalis capitis is innervated by the descending branches of the greater occipital nerve (C2) and spinal nerve C3, while the semispinalis cervicis and multifidus cervicis are innervated by the medial branches of posterior rami of spinal nerves. These muscles receive their blood supply via branches of the vertebral, deep cervical and occipital arteries.

See at a glance which muscle is innervated by which nerve. The good news? Adjacent muscles which serve similar functions are often innervated by the same nerve. You'll find this conveniently illustrated on the cheat sheets. Muscle functions Palastanga, N., & Soames, R. (2012). Anatomy and human movement: structure and function (6th ed.). Edinburgh: Churchill Livingstone. This article will introduce the muscles in each group and touch on their origin, in

Shortening of a muscle. Flexion will often bend a limb, such as when flexing the bicep, thus bending the elbow. Rotation All four of the suboccipital muscles are innervated by the suboccipital nerve (C1), and vascularized by the vertebral artery and the deep descending branches of the occipital artery. Fibularis longus muscle. A muscle along the outside of the leg that bends the foot out at the ankle. The fibularis longus originates from the head and upper lateral surface of the fibula, runs in a bony groove along the bottom of the foot to attach on the other side at the base of the first metatarsal and the neighboring medial cunieform bone, and acts to evert the foot; it is innervated by the superficial fibular nerve. Rectus abdominis

A muscle of the medial thigh that originates on the pubis. It inserts onto the linea aspera of the femur. It adducts, flexes, and rotates the thigh medially. It is controlled by the obturator nerve. It pulls the leg toward the body’s midline (i.e. adduction) Biceps brachiiVastus medialis. Shaped like a teardrop, this muscle on the inner part of your thigh runs along your thighbone to your knee. A large group of muscles in the cervical area, responsible for the movement of the head in all directions Number of Origins. Some muscles connect to more than one bone or to more than one place on a bone, and therefore have more than one origin. A muscle with two origins is called a biceps. A muscle with three origins is a triceps muscle. Finally, a muscle with four origins is a quadriceps muscle.

Movements that bring limbs towards the midline. For instance, bringing your arm down to your from sideward extension is adduction. Abduction Exercising the skeletal muscles in various ways can increase the body’s mobility, balance, and strength. Location. Many muscles derive their names from their anatomical region. The rectus abdominis and transverse abdominis, for example, are found in the abdominal region. Some muscles, like the tibialis anterior, are named after the part of the bone (the anterior portion of the tibia) that they are attached to. Other muscles use a hybrid of these two, like the brachioradialis, which is named after a region (brachial) and a bone ( radius).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 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.

If you tend to prefer fattier foods, start on the higher end of that range and adjust from there. The rest of your daily calories should come from various carb sources. At 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 QuizzesOrigin and Insertion. Some muscles are named based upon their connection to a stationary bone (origin) and a moving bone (insertion). These muscles become very easy to identify once you know the names of the bones that they are attached to. Examples of this type of muscle include the sternocleidomastoid (connecting the sternum and clavicle to the mastoid process of the skull) and the occipitofrontalis (connecting the occipital bone to the frontal bone). The omohyoid is a narrow muscle that connects the scapula to the hyoid bone. The muscle is composed of two bellies connected by an intermediate tendon, similar to the digastric muscle. 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 muscle