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A list of 28 multiple-choice questions related to muscle tissue and its functions. The questions cover topics such as the types of muscle tissue, the role of nerves in muscle function, and the actions of specific muscles. The questions are marked with either true or false, and the correct answers are indicated with a checkmark. likely a study material for a biology or anatomy and physiology course.
Typology: Exams
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11.Label the following five muscles: - ✅✅✅A: Frontalis/ occipitofrontalisD: Orbicularis OrisF: Zygomaticus minorH: RisoriusI: Masseter 12.Origin 2.Insertion 3.Action 4.Innervation 13.Psoas Major 1.____ 2.____ 14.Obturator externus 3._____ 4._____ Semimembranosus 5(1).__ 6(2).____ 7(3)._ 15.Flexor hallucis longus 8.(1)_ 9(3)._ 10(4)._ - ✅✅✅1. Transverse bodies of all lumbar vertebra 16.Lesser trochanter of the femur 17.Lateral rotation of thigh 18.Obturator nerve 19.Ischial tuberosity 20.Medial condyle of tibia 21.Knee flexion 22.Posterior fibula 23.Flexion of digit 1, inversion and plantarflexion of foot 24.Tibial nerve (deep peroneal branch) 25.Your patient sustained an injury to their facial nerve (CN VII). Which actions would be impaired? - ✅✅✅A&B 26.(Orbicularis oculi & frontalis) A. Eye closure B. Raising eyebrows 27.Your patient is in a seated position with his feet flat on the floor. He is having difficulty lifting his toes off the floor. What muscle(s) is impaired from contracting? - ✅✅✅E. A&C 28.Tibialis anterior & extensor digitorum longus (dorsiflexion) A. Tibialis anterior B. Extensor digitorum longus
29.Your patient is having difficulty when asked to bend his spine backward. What muscle is involved? - ✅✅✅Spinalis thoracis 30.(Extensor of the vertebral column) 31.True or False: When a muscle contracts, the M lines within a sarcomere come closer together towards the Z line. - ✅✅✅False 32.True or False: The A band contains thin filaments. - ✅✅✅True 33.Which muscle contracts to enable the main effort required to stand on your toes? - ✅✅✅Gastrocnemius 34.When gluteus maximus contracts, which bone is pulled posteriorly by this muscle? - ✅✅✅Femur 35.When flexor digitorum profundus contracts, what action(s) occurs? - ✅✅✅A&C A. Wrist flexion B. Flexion of digits 2- 36.Contraction of ________ results in _________? - ✅✅✅psoas major, hip flexion 37.When piriformis contracts, what action(s) will not occur at the hip? - ✅✅✅F. A&D A. Internal rotation 38.D. Flexion
39.Which muscle has origins on both the clavicle and scapula? (specify letter on diagram with the name of the muscle for full credit) 40.Which muscle is innervated by the thoracodorsal nerve? (specify letter on diagram with the name of the muscle for full credit) 41.What is the name of muscle D? 42.What is the innervation of muscle D? 43.What is the insertion of muscle E? - ✅✅✅1. A (Deltoid) 44.2. H or I (Lats) 45.3. Infraspinatus 46.4. Suprascapular nerve 47.Intertubercular groove of humerus(Teres major) 48.Use the figure to label the following six muscles: (Viewed anteriorly - ✅✅✅A: Flexor carpi radialis 49.B: Flexor digitorum superficialis 50.C: Palmaris longus 51.D: Flexor Carpi Ulnaris 52.E: Flexor pollicis longus 53.F: Flexor digitorum profundus 54.Use the figure to label the following six muscles: - ✅✅✅D: Peroneus (fibularis) longusE: SoleusF: Tibialis posteriorG: Flexor digitorum longusH: Flexor hallucis longusI: Peroneus (fibularis) brevis 55.Describe what is meant by muscle fiber "cross-bridges". What occurs to enable movement of the cross-bridges? - ✅✅✅In the presence of calcium ions, portions of a myosin filament called cross-bridges bend backward and attach to an actin filament. After attaching to the actin filament, the cross- bridges bend forward, and the actin filament is pulled along. The cross- bridges attach and detach some fifty to 100 times as the thin filaments are
pulled to the center of a sarcomere. ATP is needed on a cellular level for the myosin to pull actin along.