Chapter 10 Flashcards
Muscle Tissue (3 Forms)
Cardiac
Smooth
Skeletal
Actions of Muscles
Muscles can only pull, they cannot push
-what one group does, another group undoes
Functional Groups
Agonist
Antaonist
Agonist
Contracts
Antagonist
Relaxes
Synergist
Helps prime movers
Adds extra force to same movement
Reduces undesirable or unnecessary movement
Naming Skeletal Muscle
Location of Muscle Shape Size Direction of muscle fibers Number of Origins Location of Attachment Muscle Action
Arrangement of Fascicles
Circular- rings
Convergent- broad origin, single tendon insertion
Parallel- strap-like, parallel to long axis
Fusiform- spindle-shaped muscles with parallel fibers
Pennate- short fascicles attach to central tendon running length of muscle
Lever Systems
Lever- bone
Effort- force
Load- resistance
For Pictures
Look at App on Ipad
Pictures and Muscle Functions there
Muscles (Need to Know)
Name
Origin
Insertion
Action
Temporalis
Temporal Region
Mandible
Close Mouth
Masseter
Lateral Region
Mandible
Close Mouth
Buccinator
Mandible
Other Facial Muscles
Mastication, Whistling
Sternocleidomastoid
Sternum
Mastoid Process (Temporal Bone)
Rotate Head
Scalene:
Anterior
Middle
Posterior
Cervical Vertebrae (Transverse Process)
Ribs 1-2
Inspiration (Breathing In)
Erector Spinae Group
All vertebrae (Transverse Process)
6 Vertebrae Superior to Origin
Extend Vertebral Column
Rectus Abdominis
Pubic Bone
Coastal Cartilage of Ribs
Flexes Vertebral Column
Transversus Abdominis
Lower ribs and lumbar fascia Anterior Thorax (Linea Alba) Compress Abdominal Cavity
Pectoralis Minor
Anterior Ribs
Scapula (Coracoid Process)
Round Shoulder
Pectoralis Major
Clavical, Sternum, Ribs
Proximal Humerus
Flexes Shoulder
Serratus Anterior
Lateral Ribs
Scapula (Anterior)
Round Shoulder
Trapezius
Thoracic Vertebrae
Scapula (Sine of)
Stabilize Scapula
Rhomboids
Thoracic Vertebrae
Scapula (Medial Border)
Stabilizes Scapula
Deltoid
Clavical and Scapular Spine
Deltoid Tuberosity (Humerus)
Abduct Shoulder
Latissimus Dorsi
Thoracic and Lumber Vertebrae
Proximal Humerus
Extend Shoulder
Pronator Teres
Medial Humerus
Radius
Rotate Forearm Palm Down
Biceps Brachii
Anterior Humerus
Radius
Flex Elbow
Triceps Brachii
Posterior Humerus
Ulna (Olecranon)
Extend Elbow
Wrist/Finger Flexors
Proximal Anterior Humerus
Anterior Metacarpal, Carpal, or Phalange
Flex Wrist/Fingers
Wrist/Finger Extensors
Proximal Posterior Humerus
Posterior Metacarpal, Carpal, or Phalange
Extend Wrist/Fingers
Iliopsoas
Lumbar Vertebrae
Proximal Femur (Lesser Trochanter)
Flex Trunk/Leg
Quadriceps Femoris
Anterior Femur
Patella
Extend Knee
Hamstrings
Ischial Tuberosity (Sit Bones)
Proximal Tibia
Flex Knee
Gluteus Minimus
Ilium
Greater Trochanter
Abducts Leg
Gluteus Medius
Ilium
Greater Trochanter
Abducts Leg
Gluteus Maximus
Ilium
Greater Trochanter
Extends Leg
Tibialis Anterior
Middle Tibis
Metatarsal
Dorsiflex Ankle
Gastrocnemius
Femur (Femoral Condyles)
Calcaneus via Achilles Tendon
Plantar Flex Ankle
Soleus
Proximal Tibia and Fibula
Calcaneus via Achilles Tendon
Plantar Flex Ankle
