1. Muscle Tissue and Gross Anatomy of Muscles
Lab exercise 5: activity 3, page 42
Lab exercise 11: activities 1, 4
Lab exercise 12 p

2. Objectives
Distinguish the three types of muscle tissue in terms of structure, location and function
Find and identify these muscle tissue types on both slides and in pictures
Interpret the names of skeletal muscles (p )
Review the microscopic anatomy of a skeletal muscle cell as shown in Figure 11.1
Locate and identify the major muscles of the body on models as listed in Exercise 12 and in the muscle list
Know origin and insertions for some major muscles as listed on list
Demonstrate the action of each muscle as it is studied

3. Microscopic Anatomy

4. Skeletal Muscle

5. Microscopic Skeletal Muscle Anatomy

6. Cardiac Muscle
Intercalated disc

7. Smooth Muscle

8. Neuromuscular Junction

9. Classification of Skeletal Muscles
Direction of fibers-rectus, transverse, oblique
Relative size of muscle-maximus, minimus, longus, brevis
Location of muscle-temporalis, femoris
Number of origins-biceps, triceps, quadriceps
Location of origin/insertion-sternocleidomastoid
Shape of muscle-deltoid, trapezius
Action of muscle-adductor

10. Types of Muscles
Prime Mover (agonist)-main muscle responsible for movement
Antagonist-reverse motion of prime mover
Synergist-aids prime mover
Fixators-immobilize origin of prime mover

11. Gross Anatomy Muscles that are used in breathing external intercostals
internal intercostals
diaphragm

14. Muscles that move the scapula
trapezius
serratus anterior
pectoralis minor

17. Muscles that move the arm
latissimus dorsi
pectoralis major
deltoid
teres major

20. Rotator cuff muscles
subscapularis
infraspinatus
supraspinatus
teres minor

23. Muscles that compress the abdomen
external obliques
internal obliques
transversus abdominis
rectus abdominis

27. Muscles of head and neck
sternocleidomastoid
Muscles of facial expressions
epicranius, frontal belly
orbicularis oculi
orbicularis oris
Muscles of chewing
masseter
buccinator

31. Muscles of the upper limb
Flexors
biceps brachii**
origin: short head=coracoid process
long head=supraglenoid tubercle
insertion: radial tuberosity
brachialis
flexor digitorum superficialis

35. Extensors of arm
triceps brachii**
origin: long head=infraglenoid tubercle
lateral head=posterior humerus
medial head=posterior humerus distal to radial groove
insertion: olecranon
extensor digitorum
extensor carpi ulnaris
pronator teres
supinator

41. Muscles of the lower limb
anterior thigh region
iliopsoas
tensor fasciae latae
sartorius

43. Extensors of leg - quadriceps
rectus femoris**
origin: anterior inferior iliac spine and superior margin of acetabulum
insertion: tibial tuberosity
vastus lateralis
vastua intermedius
vastus medialis

46. Medial thigh region - adductors
gracilis
adductor magnus
adductor longus

49. Posterior thigh & gluteal region
gluteus maximus
gluteus medius

51. Flexors of leg (hamstrings)
biceps femoris**
origin: long head=ischial tuberosity
short head=linea aspera
insertion: fibular head and lateral condyle of tibia
semitendinosus
semimembranosus

53. Lower leg
gastrocnemius**
origin: medial and lateral condyles if femur
insertion: calcaneus (calcaneal tendon)
extensor digitorum longus
peroneus longus/fibularis longus
peroneus brevis/fibularis brevis
tibialis anterior

61. For review complete the following:
Exercise 11 p #5-8
Exercise 12 p #1-7
All Mastering A&P assignments (#7-11) due on Saturday before exam at 9:59 p.m.