Download - 10 the muscles
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Muscles
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Muscles of the Head – Facial Expression
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Muscles of the Head – Mastication and Tongue Movement
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Muscles of the Neck and Vertebral Column
• Head movement• Sternocleidomastoid
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Muscles of the Abdominal Wall
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Muscles of the Abdominal Wall
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Muscles of the Neck and Vertebral Column
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Muscles of the Neck and Vertebral Column
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Deep Muscles of the Thorax – Breathing
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Deep Muscles of the Thorax – Breathing
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Superficial Muscles of the Anterior Thorax
• Movements of the scapula• Pectoralis major
• Pectoralis minor
• Serratus anterior
• Subclavius
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Superficial Muscles of the Anterior Thorax
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Superficial Muscles of the Posterior Thorax
• Movements of the scapula• Trapezius
• Levator scapulae
• Rhomboid major
• Rhomboid minor
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Superficial Muscles of the Posterior Thorax
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Muscles Crossing the Shoulder Joint
• Movements of the arm• Deltoid
• Pectoralis major
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Muscles Crossing the Shoulder Joint
• Movements of the arm• Latissimus dorsi
• Supraspinatus
• Infraspinatus
• Teres minor
• Teres major
• Coracobrachialis
• SubscapularisX
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Muscles Crossing the Elbow Joint
• Posterior muscles – extensors of the forearm • Triceps brachii
• Anconeus
• Anterior muscles – flexors of the forearm• Biceps brachii – also supinates the forearm
• Brachialis
• Brachioradialis
X
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Muscles of the Forearm
• Movements of the wrist, hand, and fingers• Most forearm muscles arise from the distal
humerus
• Movements at the wrist include:• Flexion, extension, abduction, and adduction
• Wrist and fingers are “operated” by muscles in the forearm
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Superficial Anterior Muscles of the Forearm
• Pronator teres
• Flexor carpi radialis
• Palmaris longus
• Flexor carpi ulnaris
• Flexor digitorum superficialis
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Deep Anterior Muscles of the Forearm
• Flexor pollicis longus
• Flexor digitorum profundus
• Pronator quadratus
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Muscles of the Forearm
• Extensors – posterior compartment• Innervated by the radial nerve
• Originate at a common tendon• Lateral epicondyle of the humerus
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Superficial Posterior Muscles of the Forearm
• Brachioradialis – flexes forearm
• Extensor carpi radialis longus
• Extensor carpi radialis brevis
• Extensor digitorum
• Extensor carpi ulnaris
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Summary of Actions of the Muscles of the Arm and Forearm
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Summary of Actions of the Muscles of the Arm and Forearm
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Muscles Crossing the Hip and Knee Joints
Anterior muscles• Flex the thigh and extend the leg at the knee
• Posterior muscles • Extend the thigh and flex the leg
• Adductor muscles – on medial aspect of thigh• Adduct the thigh only
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Muscles Crossing the Hip and Knee Joints
• Movements at the hip joint• Muscles that flex the thigh
• Originate on vertebral column or pelvis
• Muscles that extend the thigh• Arise posterior to the hip joint
• Adductors originate medial to the hip joint
• Abductors originate lateral to the hip joint
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Anterior and Medial Muscles
• Origin on pelvis or vertebral column• Iliacus • Psoas major• Sartorius
• Muscles of the medial compartment• Adductor longus• Adductor brevis• Adductor magnus• Pectineus • Gracilis
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Anterior and Medial Muscles
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Muscles of the Anterior Compartment of the Thigh
• Quadriceps femoris – four separate heads • Have a common insertion at the quadriceps tendon
• Powerful knee extensors• Rectus femoris
• Vastus lateralis
• Vastus medialis
• Vastus intermedius
• Tensor fasciae latae
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Muscles of the Anterior Compartment of the Thigh
Figure 11.19a
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Posterior Muscles
• Origin on pelvis or sacrum• Gluteus maximus• Gluteus medius• Gluteus minimus
• Lateral rotators• Piriformis• Obturator externus• Obturator internus• Superior and inferior gemellus• Quadratus femoris
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Muscles of the Posterior Compartment of the Thigh
• Hamstrings
• Biceps femoris
• Semitendinosus
• Semimembranosus
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Muscles of the Anterior Compartment
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Muscles of the Lateral Compartment
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Muscles of the Posterior Compartment
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Summary of Actions of Muscles of the Thigh and Leg
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Summary of Actions of Muscles of the Thigh and Leg