QUIZ 3 PDF

QUIZ 3 1. A cell of this type of muscle is striated and can be uninucleated or binucleated. - Answer: Cardiac muscle. 2. A muscle fascicle is: - Answer: A bundle of cells. 3. A muscle that dorsiflexes the foot is the: - Answer: Tibialis anterior. 4. A muscle that opens the mouth is the: -...

QUIZ 3 1. A cell of this type of muscle is striated and can be uninucleated or binucleated. - Answer: Cardiac muscle. 2. A muscle fascicle is: - Answer: A bundle of cells. 3. A muscle that dorsiflexes the foot is the: - Answer: Tibialis anterior. 4. A muscle that opens the mouth is the: - Answer: Digastric. 5. A nursing infant develops a powerful sucking muscle that adults also use for whistling. This muscle is the: - Answer: Buccinator. 6. Acetylcholine: - Answer: Binds to the sarcolemma and initiates an impulse in the muscle fiber. 7. Both cardiac muscle and this type of muscle are called involuntary. - Answer: Smooth muscle. 8. Contractions of these muscles are under voluntary control. - Answer: Skeletal muscle. 9. From superficial to deep, the three muscles of the lateral abdominal wall are: - Answer: External oblique, internal oblique, transversus abdominis. 10. In skeletal muscle fibers, which band or zone contains both thick and thin myofilaments? - Answer: A band. 11. In striated muscle cells, which of these structures stores calcium ions that trigger contraction? - Answer: The terminal cisterns. 12. In striated muscle, the I band is where: - Answer: Thin filaments occur. 13. Inability to raise the eyebrow could be associated with damage to the: - Answer: Frontal belly of the occipitofrontalis muscle. 14. Medial rotation of the eyeball is performed by the: - Answer: Medial rectus muscle. 15. Sarcoplasmic reticulum lies: - Answer: Between myofibrils but in fibers. 16. The area that contains no thin filaments is known as the: - Answer: H band. 17. The deepest muscle of the anterior abdominal wall is the: - Answer: Transversus abdominis. 18. The masseter and temporalis muscles provide much of the force for: - Answer: Chewing. 19. The muscle used to depress the tongue is the: - Answer: Hyoglossus. 20. The only muscle cells that branch are ________ muscle cells. - Answer: Cardiac. 21. The prime movers of jaw closure and biting are the: - Answer: Masseter and temporalis muscles. 22. The quadriceps femoris group includes all of the following EXCEPT: - Answer: Biceps femoris. 23. The sarcoplasmic reticulum (SR) stores: - Answer: Calcium. 24. This type of muscle attaches to bone, but may also attach to skin, cartilage, fascia, or a raphe. - Answer: Skeletal muscle. 25. This type of muscle contains intercalated discs. - Answer: Cardiac muscle. 26. This type of muscle is found in large vessels leading to and from the heart. - Answer: Smooth muscle. 27. This type of muscle is found in the heart. - Answer: Cardiac muscle. 28. This type of muscle makes up the walls of hollow organs, such as the stomach and uterus.  - Answer: Smooth muscle. 29. This type of muscle, along with cardiac muscle, is called visceral muscle. - Answer: Smooth muscle. 30. Triceps brachii and biceps brachii perform opposing actions and are classified as: - Answer: Antagonists. 31. When climbing stairs, which muscle or muscle group flexes your knee? - Answer: Hamstring group. 32. When climbing stairs, which muscles plantar flex your foot? - Answer: Gastrocnemius and soleus. 33. Which group is an antagonist to the hamstrings group? - Answer: Quadriceps femoris group. 34. Which muscle forms the anterior surface of the neck? - Answer: Platysma. 35. Which of the following correctly defines a triad of the sarcomere? - Answer: A T tubule and two adjacent terminal cisterns. 36. Which of the following extends the elbow? - Answer: Triceps brachii. 37. Which of the following is NOT a muscle of the rotator cuff? - Answer: Teres major. 38. Which of the following muscles does NOT adduct the thigh? - Answer: Rectus femoris. 39. Which of the following muscles is NOT associated with the mouth? - Answer: Orbicularis oculi. 40. Which region of the sarcomere does not change in length during contraction? - Answer: A band.