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Anatomy & Physiology The Muscular System 1. Name the 4 functions of muscle tissue a)_____________________________ b)_____________________________ c)_____________________________ d)_____________________________ 2. Name 4 characteristics of muscle tissue a)______________________________ b)____________________________ c)______________________________ d)______________________________ 3. What are the 3 types of muscle tissue, and describe? (review) a) _______________________- b) _______________________- c) _______________________- 4. Fill in the blanks relating to the properties of muscle tissue. a) _____________________- respond to chemicals released from nerve cells. b) _____________________-ability to shorten and generate force. c) _____________________-ability to return to original shape after being stretched. d) _____________________-ability to propagate electrical signals over membranes. e) _____________________-ability to be stretched without damaging the tissue. 5. Describe origin and insertion and how they relate to muscle attachment sites. a) origin- b) insertion- 6. Fill in the blank with the appropriate number. ____spasm ____fasciculation ____tremor ____cramp ____tic 1. involuntary twitching of muscles normally under voluntary control ie. eyelid 2. involuntary contraction of single muscles 3. a painful spasm 4. rhythmic, involuntary contraction of opposing muscle groups 5. involuntary, brief twitch of a motor unit visible under the skin 7.Locate on the following diagrams & generally describe the actions of the following skeletal muscles: Muscle Frontalis Orbicularis oculi Orbicularis oris Buccinator Zygomaticus Masseter Temporalis Sternocleidomastoid Pectoralis major Intercostal muscles Rectus abdominus Transversus abdominus Internal oblique External oblique Trapezius Action Latissimus dorsi Erector spinae Deltoid Biceps brachii Triceps brachii Iliopsoas (psoas major & iliacus) Gluteus maximus Gluteus medius Gluteus minimus Adductor magnus Adductor longus Adductor brevis Sartorius Hamstring group (3) biceps femoris semitendinosus semimembranosus Quadriceps group (4) vastus lateralis vastus intermedius vastus medius rectus femoris Tibialis anterior Peroneal muscles Gastrocnemius
