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A&P CH 9 MUSCLES

MUSCULAR SYSTEM

QuestionAnswer
SKELETAL MUSCLE Striated(proteins) & voluntary / attached to bones
SMOOTH MUSCLE Nonstriated & involuntary/found in walls of organs (viscera) & blood vessels
CARDIAC MUSCLE Found only in the eart; striated, branched, involuntary
Kissing muscle
Trumpeter’s muscle
Harmstrings
Smiling muscle
Toe Dancer’s Muscles
Praying Muscle
Tailor’s Muscle
Swimmer’s Muscle
Achilles tendon
Surprised Muscle
FACIAL MUSCLES
Frontalis
Orbicularis Oculi
Levator Palpebrae Superioris
Orbicularis Oris
Buccinator
Zygomaticus
CHEWING MUSCLES
Temporalis
Masseter
NECK
Sternocleidomasteoid
Trapezius
TRUNK
External Intercostals
Internal intercostals
Diaphragm
Muscle of abdominal wall
External Oblique
Internal Oblique
Transversus abdominis
Rectus Abdominis
Muscles of the Vertebral Column
Muscles of the pelvic floor
SHOULDER & UPPER ARM
Trapezius
Serratus Anterior
Pectoralis Major
Latissimus dorsi
Deltoid
Rotator Cuff Muscles
Supraspinatus
Subscapularis
Infraspinatus
Teres Minor
FOREARM & HAND
Biceps Brachii
Triceps Brachii
Brachialis
Brachioradialis
Flexor & Extensor Carpi groups
Flexor & Extensor Digitorum Groups
THIGH
Gluteus Maxims
Gluteus MEdius
Gluteus Minimums
Lliopsoas
Adductor Group
Adductor longus
Adductor brevis
Adductor Magnus
Gracilis
LEG
Quadriceps Femoris
Rectus femoris
Vastus Lateralis
Vastus Medialis
Vastus Intermedius
Sartorius
Hamstrings
Biceps femoris
Semitendinosus
Semimembranosus
ANKLE & FOOT
Tibalis Anterior
Peroneus Longus
Gastrocnemius
Soleus
MUSCLES CONTRACTILE UNIT • Large Muscles consist of thousands of single muscle cells (fibers).
HOW MUSCLES CONTRACT
RESPONSES OF WHOLE MUSCLE
DAMAGE TO RECEPTOSITES
summation is the inability of the muscle to relaxes fully when constantly stimulated (electrically) in rapid succession).
Twitch occurs when a single stimulus is delivered to the muscle: the muscle contracts and fully relaxes
tetanus refers to a sustained muscle contraction
Contraction and movement
o Sub-minimal stimulus
o Minimal Stimulus
o Maximal stimulus
o Supra- Maximal stimulus
• ISOMETRIC Increases the contraction without causing movement
• ISOTONIC Produces movement
• TONIC: Does not produce movement, increases firmness of muscles that maintain posture
• TWITCH: Quick, jerky contraction
• TETANIC (tetanus) Sustained contraction
Created by: 510756990