Biol 261 1st Edition Exam # 3 Study GuidePRACTICE QUESTIONS1. What is one motor unit equivalent to?2. What is the tissue that surrounds the muscle fascicles?3. What is the structure that contains calcium?4. Which two bands get smaller during contraction?5. What is the action of orbicularis oculi?6. What is the deep chewing muscle?7. Which muscle is the “little L’ of the chin?8. Which infrahyoid muscle inserts at the thyroid cartilage?9. What is the most lateral group of muscles of the erector spinae group?10. Which Intercostals are in the direction of “hands in your pockets”?11. What is the middle line of the rectus abdominis?12. What is the action of the levator scapulae?13. Is teres minor or teres major a muscle of the rotator cuff?14. What is the anterior muscle of the scapula?15. What is a synergist of triceps brachii?16. Is brachioradialis lateral or medial?17. Which muscles plantar flex the feet?18. Which muscles are lateral hip rotators?19. Is there a difference in deep musculature of the male and female?20. Are motor neurons afferent or efferent?21. Do the zones of overlap grow smaller or larger during contraction?22. What kind of tissue is epimysium?23. The presence of what is required for muscle contraction?24. What principle is “a characteristic in which each muscle fiber either contracts completely or does not contract at all”?25. Do antagonists oppose the agonist or aid the agonist?26. What muscle contains the galea aponeurotica?27. What is another name for the answer to number 26?28. Which muscle tenses the skin of the neck?29. Which two muscles are considered as the smiling muscles?30. What is the large anterolateral neck muscle that originates on the manubrium of the sternum and the medial portion of the clavicle?31. What is the deepest muscle layer of the abdominal wall?32. What is the prime mover of arm Abduction?33. What is the action of the pronator teres?34. What is the muscle of the posterior forearm that originates on the lateral epicondyle of the Humerus and extends the wrist?35. Does the Sartorius Abduct or adduct the thigh?36. Which muscle makes the iliotibial tract taut?37. What is one powerful knee extensor?38. When you extend the leg, you ____ the knee.39. When you flex the knee, you ____ the hip.40. Is semitendinosus superficial or deep to semimembranosus?ANSWERS1. One motor neuron2. Perimysium3. Sarcoplasmic reticulum4. H-band and I-band5. Closes eyes6. Buccinator7. Digastric8. Sternothyroid9. Iliocostals10. External11. Linea alba12. Elevates and adducts the scapula13. Teres minor14. Subscapularis15. Anconeus16. Lateral17. Gastrocnemius, soleus, plantaris18. Piriformis, obturator externi, obturator interni, superior glamelli, inferior glamelli, quadratus femoris19. No20. Efferent21. Larger22. DICT23. Calcium24. All-or-none25. Oppose26. Occipitofrontalis27. Epicranius28. Platysma29. Zygomaticus, risorius30. Sternocleidomastoid31. Transversus abdominus32. Deltoid33. Pronator teres34. Extensor carpi radialus longus35. Abducts36. Tensor fascia latae37. Rectus femoris38. Extend39. Extend40.