Gross Anatomy of the Muscular System

REVIEW SHEET Gross Anatomy of the Muscular System Name Lab Time/Date Classification of Skeletal Muscles 1. Several cnteria were given for the naming of muscles For each of the criteria below, list at least two muscles that are named for the given criterion. 1. Muscle location: temporalis brachioradialis 2 Muscle shape: deltiodi trapezius 3. Muscle size pectoralis major pectoralis minor 4 Direction of muscle fibers: external oblique & rectus femoris 5. Number of origins biceps brach: tricepts brachii 6. Location of attachments: Sternocleidomastoid; flexor carpi redislis. 7. Muscle action: adductorm magnus supinator 2. Match the key terms to the descriptions below. Key: a. prime mover (agonist) b. antagonist c. synergist d. fixator e origin f. insertion 1. term for the biceps brachii during forearm flexion d 2. term that describes the relat on of orachioradialis to biceps brachii during forearm flexion b 3. term for the triceps brachii curing forearm flexion f 4. term for the more movable muscle attachment e 5. term for the more fixed muscle attachment C 6. term for the rotator cuff muscles and deltoid when the forearm is flexed and the hand grabs a tabletop to lift the table Gross Anatomy of the Muscular System Muscles of the Head and Neck 3. Using choices from the key at the right, correctly identify muscles provided with leader lines on the illustration. Key buccinator b. depressor anguli oris c depressor labii inferioris d. frontal belly of the epicranius e. levator labii inferioris masseter g. mentalis h. occipital belly of the epicranius 1. orbicularis oculi j. orbicularis oris k. risorius 1. sternocleidomastoid m zygomaticus minor and major 4. Using the key provided in question 3, identify the muscles described next. 1. used in smiling Corrugstor Sapercipi 6. used to form the vertical frown crease on the forehead 2. used to suck in your cheeks 7. your kissing muscle 3. used in blinking and squinting 8. prime mover of jaw closure 4. used to pout (pulls the corners of the mouth downward) platysma 9. tenses skin of the neck during shaving 5. raises your eyebrows for a questioning expression Gross Anatomy of the Muscular System Muscles of the Trunk 5. Correctly identify both intact and transected (cut) muscles depicted in the illustration, using the key given at the right. Key 1. a major flexor of the vertebral column 2. prime mover for forearm flexion 3. prime mover for arm flexion e 4. assume major responsibility for forming the abdominal wall (three pairs of muscles) 5. prime mover of arm abduction a. biceps brachii (cut) b. deltoid c. external intercostals d. external oblique e. internal oblique f. pectoralis major g. pectoralis minor h. rectus abdominis L serratus anterior trapezius 6. Using the key provided in question 5 above, identify the major muscles described below. with ribs fixed, pulls scapula forward and downward 7. moves the scapula forward and rotates scapula upward 8. small, inspiratory muscles between the ribs: elevate the rib cage 9. extends the head Gross Anatomy of the Muscular System Muscles of the Upper Limb 7. Using terms from the key on the night, contently identify all muscles provided with leader lines in the illustration Pronator quadratus biceps brachia b brachialis brachioradial is extensor carpi radial is longus flexor carpi radial is flexor carpi ulnaris flexor digitorum superficialis palmans longus pronator teres quedaks 8. Use the key provided in question 7 to identify the muscles described below. (Some choices from the key will be used more than once flexes and supinates the forearm 6. flexes the hand and middle phalanges 2 muscle located in the posterior compart-ment of the forearm Promstor fundmatuates the forearm forearm flexors, no role in supination (two muscles) 8. flexes and adducts the hand 4 muscle located medial to the palmars longus 9. extends and abducts the hand 5 flexes and abducts the nand 10. flat muscle that is a weak hand flexor, tenses skin of the palm Gross Anatomy of the Muscular System Muscles of the Lower Limb 9. Using the terms from the key on the right, correctly identify all muscles provided with leader lines in the illustrations below 10. Use the key terms in question 9 to respond to the descriptions below. 1. "tailor's muscle" 2. lateral compartment muscles that plantar flex and evert the foot (two muscles) 3. abducts the thigh to take the "at ease" stance Iliacust psoss major 4 . flex the trunk onto the thigh, as in "taking a bow" (two muscles) Key adductor longus extensor digitorum longus fibularis longus gastrocnemius rectus femoris sartorius soleus tensor facia lata vastus lateralis vastus medialis Triceps surse #gastrocnemius 5. posterior compartment muscles that plantar flex the foot (two muscles) 6. adducts the thigh, as when standing at attention 7 extends the toes 8 extend leg and flex thigh (three muscles) General Review: Muscle Recognition 11. Identify each lettered muscle in the illustration of the human anterior superficial musculature by matching its letter with one of the following muscle names 1 adductor longus tibialis anterior 2. biceps brach transversus abdominis 3 brachioradialis trapezius 4 deltoid triceps brachi 5 extensor digitorum longus vastus lateralis 6 external oblique vastus medials 7 fibularis longus zygomaticus 8 flexor carpi radialis 9. flexor carpi ulnaris 10 frontal belly of epicranius 11 gastrocnemius 12 gracilis 13 ibopsoas 14. intercostals 15. internal oblique 16 masseter 17. orbiculans oculi 18 orbicularis oris 19 palmaris longus 20 pectineus 21 pectoralis major 22 pectoralis minor 23 platysme 24 pronator teres 25 rectus abdominis 26 rectus femoris 27 sartorius 28 serratus anterior 29 soleus 30 sternocleidomastoid 31 stenohyoid 32 temporalis 33 tensor fascia lata Gross Anatomy of the Muscular System 12. Identify each lettered muscle in this illustration of the human posterior superficial musculature by matching its letter with one of the following muscle names 1 adductor magnus 2. biceps femoris 3. brachialis 4. brachioradialis 5. deltoid 6. extensor carpi radialis longus 7. extensor carpi ulnaris 8. extensor digitorum 9. external oblique 10. flexor carpi ulnaris 11. gastrocnemius 12. gluteus maximus 13. gluteus medius 14. graciles 15. iliotibial tract (tendon) 15. infraspinatus 17. latissimus dors 18. occipital belly of epicranius 19 sem membranosus 20 semitendinosus 21. sternocleidomastoid 22. teres major 23. trapezius 24 triceps brachii