The muscular system test. Muscular System Quiz Worksheets 2019-07-18

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Quiz: Muscular System

the muscular system test

Option D: Sneering is accomplished by the levator labii superioris because the muscle elevates one side of the upper lip, and frowning or pouting largely by the depressor anguli oris, which depresses the corner of the mouth. The insertion is attached to the movable bone, and when the muscle contracts, the insertion moves toward the origin. Hyperextension, for example, can occur with a traumatic car crash when the head is forced backwards, or extended, beyond what it normally should do. Option E: Smiling is accomplished primarily by the zygomaticus muscles, which elevate the upper lip and corner of the mouth. Muscle fatigue is due, in part, to the accumulation of lactic acid. Exam Instructions: Choose your answers to the questions and click 'Next' to see the next set of questions.

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Quiz: Muscles (for Kids)

the muscular system test

The rhomboid major is a rhombus or diamond shape. This small contraction is known as a twitch contraction. But muscle is also the dominant tissue in the heart and in the walls of other hollow organs of the body. He requests the surgeon reattach the tendon in such a way to increase the strength of his forearm flexion. The sternocleidomastoid muscles are involved in cervical side bending.

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Musculoskeletal System

the muscular system test

The size of motor units varies throughout the body, depending on the function of a muscle. For example, the arm can abduct from the center of the body. These proteins are organized into thick and thin filaments called myofilaments, which repeat along the length of the myofibril in sections called sarcomeres. The small muscles of the vertebrae the multifidi and rotators help rotate, extend, and side bend the back. Intercalated disks are made up of fingerlike projections from two neighboring cells that interlock and provide a strong bond between the cells.

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Musculoskeletal System

the muscular system test

The gluteal region contains three muscles differentiated by size—the gluteus maximus large , gluteus medius medium , and gluteus minimus smallest. Certain conditions or disorders, such as myoclonus, can affect the normal contraction of muscles. Acetylcholine, which began the process of muscle contraction, is broken down to acetic acid and choline by enzymes present on the sarcolemma; for this reason, a single nerve impulse produces only one contraction; the muscle cell relaxes until stimulated by the next round of acetylcholine release. All of the above 8. QuizMoz - The Muscular System Quiz New! Abduction is movement away from the body, away from the center of the body and away from the midsagittal plane, as discussed above and as shown in the picture above. Muscles — Fasciculus — Myofibrils — Muscle fibers — Myofilaments B.

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The Muscular System

the muscular system test

Many oval nuclei can be seen just beneath the plasma membrane, which is called the sarcolemma in muscle cells. This phenomenon is known as temporal summation. The origin of the biceps brachii is the attachment of the muscle that remains relatively fixed during contraction. The flood of calcium acts as the final trigger for contraction, because as calcium binds to the regulatory proteins on the actin filaments, they change both their shape and their position on the thin filaments. It let me know that I failed. The general knowledge quiz is my favorite Quizzes for this month are sponsored by Copyright © 2019. Please enter your Name and what you would like to tell everyone about The Muscular System Name: Think you know more about The Muscular System and would like others to know too? You can learn about musculoskeletal health problems in our section devoted to diseases and conditions.

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Musculoskeletal System

the muscular system test

Cardiac muscle is striated muscle like the skeletal muscles are. Because skeletal muscles move the insertion closer to the immobile origin, fixator muscles assist in movement by holding the origin stable. Both heads arise on the scapula and join to form a single muscle belly which is attached to the upper forearm. Most skeletal muscles are attached to two bones across a joint, so the muscle serves to move parts of those bones closer to each other. Muscles of the Humerus that Act on the Forearm All anterior arm muscles cause elbow flexion.

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human muscle system

the muscular system test

Muscles — Fasciculus — Muscle fibers — Myofibrils — Myofilaments D. The trapezius muscles are the most superficial muscles of the posterior neck and upper trunk; the trapezius muscles extend the head; they also can elevate, depress, adduct, and stabilize the scapula. It would be great to see what the answers are so I can learn. Muscles move by shortening their length, pulling on tendons, and moving bones closer to each other. Option C: The occipitofrontalis raises the eyebrows. The place on the moving bone that is connected to the muscle via tendons is called the insertion. Click it to see your results.

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human muscle system

the muscular system test

Another chemical that helps to keep muscles working is creatine phosphate. All muscles maintain some amount of muscle tone at all times, unless the muscle has been disconnected from the central nervous system due to nerve damage. Muscles of the Lower Limb Muscles that act on the lower limb cause movement at the hip, knee and foot joints. Actin contains myosin-binding sites that allow myosin to connect to and move actin during muscle contraction. Skeletal Muscles as Levers Skeletal muscles work together with bones and joints to form lever systems.

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Anatomy Test #2 The Muscular System Flashcards

the muscular system test

In order of decreasing strength, these are the brachialis, biceps brachii, and brachioradialis. Chewing Muscles The buccinator muscle, which is a member of this group, is described with the facial muscles. But I wasn't able to see what the correct answers. The paired sternocleidomastoid muscles are two-headed muscles, one found on each side of the neck; when both sternocleidomastoid contract together, they flex your neck. The final function of muscle tissue is the generation of body heat. Skeletal Muscle Histology Skeletal muscle fibers differ dramatically from other tissues of the body due to their highly specialized functions. Each myofibril is a threadlike structure that extends from one end of the muscle fiber to the other.

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