Exercise 11-20 Review.pdf

Exercise 11 Review Introduction to the Muscles 1. Label the following illustration. Facial muscles, Deltoid, Biceps brachii Brachioradialis, Pectineus, Adductor longus, Gracilis, Sartorius, Patella, Gastrocnemius, Soleus, Sternocleidomastoid, trapezius, pectoralis major, serratus anterior, rectus abdominis, external abdominal oblique, flexors of wrist and fingers, tensor fasciae latae, vastus lateralis, rectus femoris, vastus intermedius, vastus medialis, tibialis anterior, fibularis brevis, fibularis longus, extensor digitorum longus, quadriceps femoris.

2. Label the following illustration. Sternocleidomastoid, infraspinatus, teres minor, teres major, triceps brachii,extensor of the wrist fingers, hamstring muscles, semitendinosus,biceps femoris, semimembranosus, fibularis longus, fibularis brevis, splenius capitis,

trapezius, deltoid, latissimus dorsi, external abdominal oblique, gluteus medius, gluteus maximus, adductor magnus, gracilis, gastrocnemius,soleus,calcaneal (achilles tendon) (a) Muscle a- tendon b- deep fascia c-skeletal muscle d-artery e-nerve f-vein g-epiysium h-perimysium i-endomysium j-fascicle k-muscle fiber l- myofibril (b) Fascicle a-vein b-nerve c-artery d-perimysium e-nuclei f-endomysium g-muscle fiber h-myofibril (c) Myofibril a-sarcomere b-muscle fiber c-l band d-A band e-l band f-Zdisc g-H zone h-Z disc i-myofibril j-myofilaments k-Mline l-sarcomere m-transverse sectional plane n-M line o-H zone p-A band g-l band r-Z disc

Exercise 12 Review Muscles of the Head and Neck 1. What is the origin of the masseter muscle? Zygomatic arch. 2. What is the action of the risorius? Abducts the corners of the mouth. 3. What kind of muscle is the orbicularis oris muscle in terms of action? Sphincter muscle. 4. Fill in the following illustration for the muscles of the neck. A)- Diagastric B)- Mylohyoid C)- Sternocleidomastoid D)- Sternohyoid E)- Omohyoid 5. What muscle originates on the temporal fossa? Temporalis 6. Name two muscles that close the jaw. Masseter and temporalis. 7. Where does the sternocleidomastoid muscle insert? In mastoid process / superior nuchal line. 8. What muscle closes the lips? Orbicularis oris. 9. Where does the orbicularis oculi insert? The skin of the eyelid. 10. What is the insertion of the temporalis? The coronoid process, and mandibular ramus. 11. Name a muscle that closes the eye. Orbicularis oculi. 12. What is the action of the sternocleidomastoid? Rotation, extension, and flexion of the neck. 13. What muscle is a synergist with the masseter? The temporalis. 14. Label the muscles of the head in the following illustration.

A) Occipitofrontalis B) Temporalis C) Orbicularis Oculi D) Masseter E) Orbicularis Oris F) Buccinator 15. When you turn your head to the left, which sternocleidomastoid muscle contracts? The right sternocleidomastoid left splenius capitis. 16. Tilt your head so that your chin is elevated and pout your lower lip. What muscle forms a thin membrane along the anterolateral neck? The platysma. 17. Purse your lips and feel the buccinator muscle as it contracts in the cheek. Orbicularis Oris 18. Clench your teeth and palpate the temporalis muscle and the masseter. Mastication; which may progress into the temporalis tendon. Examine figure 12.4 for surface views of facial muscles. Fill in which muscles are represented in the photographs.

A frontalis B levator labii superioris m. C buccinator D corrugator supercili muscle E orbicularis orli m. F levator labii superioris alaque nasi m. G depressor anguli oris Exercise 13 Review Muscles of the Torso 1. What is the action of the serratus anterior muscle? Abduction of the scapula. 2. Name four muscles that extend the vertebral column. Spinalis, Longissimus, Semispinalis, and the Multifidus. 3. How does the serratus anterior function as an antagonist to the rhomboideus muscles? Serratus anterior abducts the scapula, opposed to the rhomboids , which adducts the scapula. 4. How does the action of the rectus abdominis differ from that of the other abdominal muscles? They both compress the abdominal wall, but only the rectus abdominis flexes the vertebral column, rather than laterally rotating the trunk. 5. What is the physical relationship of the intercostal muscles to each other? They contribute to the formation of 40% of the resting breath volume. 6. Extension and rotation of the vertebral column occur by what group of muscles? Erector Spinae. 7. What is the action of the intercostal muscles? Elevation and depression of the ribs. 8. What muscle inserts on the central tendon? Diaphragm. 9. The tendinous intersections are found in what muscle? Rectus Abdominis. 10. Which is the deepest abdominal muscle? Transverse Abdominis 11. What is the action of the quadratus lumborum? To flex the vertebral column laterally and to depress rib 12. 12. What two muscles originate on the neck and extend and rotate the head? Spinalis and Longissimus. 13. Label the muscles in the following illustration.

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