Myology part 2 Figure 11 12 a Muscles

Figure 11 -12 a Muscles of the Pelvic Floor Superficial Dissections Ischiocavernosus Bulbospongiosus Vagina

Figure 11 -12 a Muscles of the Pelvic Floor Deep Dissections Urethra Urogenital Diaphragm

Figure 11 -12 b Muscles of the Pelvic Floor Superficial Dissections Testis Urethra (connecting

Figure 11 -12 b Muscles of the Pelvic Floor Deep Dissections UROGENITAL TRIANGLE OF

Table 11 -10 Muscles of the Pelvic Floor (Figure 11– 12) © 2012 Pearson

11 -6 Appendicular Musculature • Appendicular Muscles • Position and stabilize pectoral and pelvic

Figure 11 -13 a An Overview of the Appendicular Muscles of the Trunk Superficial

Figure 11 -13 a An Overview of the Appendicular Muscles of the Trunk Deep

Figure 11 -13 b An Overview of the Appendicular Muscles of the Trunk Superficial

Figure 11 -13 b An Overview of the Appendicular Muscles of the Trunk Deep

11 -6 Appendicular Musculature • Muscles of the Shoulders and Upper Limbs • Four

11 -6 Appendicular Musculature • Muscles That Position the Pectoral Girdle • Trapezius •

Figure 11 -14 a Muscles That Position the Pectoral Girdle Trapezius Levator scapulae Subclavius

Figure 11 -14 b Muscles That Position the Pectoral Girdle Superficial Dissection Muscles That

11 -6 Appendicular Musculature • Muscles That Position the Pectoral Girdle • Rhomboid and

Figure 11 -14 b Muscles That Position the Pectoral Girdle Deep Dissection Muscles That

11 -6 Appendicular Musculature • Muscles That Position the Pectoral Girdle • Serratus anterior

11 -6 Appendicular Musculature • Muscles That Position the Pectoral Girdle • Subclavius •

Figure 11 -14 a Muscles That Position the Pectoral Girdle Pectoralis minor (cut) Serratus

Table 11 -11 Muscles That Position the Pectoral Girdle (Figures 11– 13, 11– 14)

11 -6 Appendicular Musculature A&P FLIX Muscles of the Pectoral Girdle (a) A&P FLIX

11 -6 Appendicular Musculature • Muscles That Move the Arm • Deltoid • The

Figure 11 -15 a Muscles That Move the Arm Superficial Dissection Sternum Clavicle Muscles

Figure 11 -15 b Muscles That Move the Arm Superficial Dissection Muscles That Move

11 -6 Appendicular Musculature • Muscles That Move the Arm • Subscapularis and teres

Figure 11 -15 a Muscles That Move the Arm Deep Dissection Ribs (cut) Muscles

11 -6 Appendicular Musculature • Muscles That Move the Arm • Infraspinatus and teres

Figure 11 -15 b Muscles That Move the Arm Deep Dissection Muscles That Move

11 -6 Appendicular Musculature • Muscles That Move the Arm • Pectoralis major •

11 -6 Appendicular Musculature • The Rotator Cuff • Muscles involved in shoulder rotation

Table 11 -12 Muscles That Move the Arm (Figures 11– 13 to 11– 15)

11 -6 Appendicular Musculature A&P FLIX Rotator Cuff Muscles: An Overview (a) A&P FLIX

11 -6 Appendicular Musculature • Muscles That Move the Forearm and Hand • Originate

11 -6 Appendicular Musculature • Muscles That Move the Forearm and Hand • Extensors

11 -6 Appendicular Musculature • Flexors of the Elbow • Biceps brachii • Flexes

Figure 11 -16 b Muscles That Move the Forearm and Hand Coracoid process of

11 -6 Appendicular Musculature • Extensors of the Elbow • Triceps brachii • Extends

Figure 11 -16 a Muscles That Move the Forearm and Hand Triceps brachii, long

Table 11 -13 Muscles That Move the Forearm and Hand (Figure 11– 16) ©

11 -6 Appendicular Musculature A&P FLIX Muscles of the Elbow Joint (a) A&P FLIX

11 -6 Appendicular Musculature • Flexors of the Wrist • Palmaris longus • Superficial,

11 -6 Appendicular Musculature • Extensors of the Wrist • Extensor carpi radialis •

11 -6 Appendicular Musculature • Muscles That Move the Forearm and Hand • Pronation

11 -6 Appendicular Musculature A&P FLIX Muscles of the Forearm (a) A&P FLIX Muscles

Figure 11 -17 b Muscles That Move the Hand Fingers Supinator Brachialis Cut tendons

Figure 11 -17 d Muscles That Move the Hand Fingers Anconeus Supinator Muscles That

11 -6 Appendicular Musculature • Muscles That Move the Hand Fingers • Also called

Figure 11 -17 a Muscles That Move the Hand Fingers Tendon of biceps brachii

Figure 11 -17 c Muscles That Move the Hand Fingers Anconeus Muscles That Extend

11 -6 Appendicular Musculature • Tendon Sheaths • Extensor retinaculum • Wide band of

Figure 11 -18 b Intrinsic Muscles of the Hand Tendon of extensor indicis Tendons

11 -6 Appendicular Musculature • Tendon Sheaths • Flexor retinaculum • Anterior surface of

Figure 11 -18 a Intrinsic Muscles of the Hand Tendon of flexor digitorum profundus

Table 11 -14 Muscles That Move the Hand Fingers (Figure 11– 17) © 2012

11 -6 Appendicular Musculature • The Intrinsic Muscles of the Hand • Muscles that

Table 11 -15 Intrinsic Muscles of the Hand (Figure 11– 18) © 2012 Pearson

Slides: 77

Download presentation

Myology part 2

Figure 11 -12 a Muscles of the Pelvic Floor Deep Dissections Urethra Urogenital Diaphragm External urethral sphincter Deep transverse perineal Central tendon of perineum Pelvic Diaphragm Pubococcygeus Iliococcygeus Levator ani External anal sphincter Coccygeus Sacrotuberous ligament © 2012 Pearson Education, Inc. Female

Figure 11 -12 b Muscles of the Pelvic Floor Superficial Dissections Testis Urethra (connecting segment removed) Ischiocavernosus Bulbospongiosus Superficial transverse perineal Anus Gluteus maximus © 2012 Pearson Education, Inc. Male

Figure 11 -12 b Muscles of the Pelvic Floor Deep Dissections UROGENITAL TRIANGLE OF PERINEUM Urogenital Diaphragm External urethral sphincter Deep transverse perineal Central tendon of perineum Pelvic Diaphragm Pubococcygeus Iliococcygeus Levator ani External anal sphincter Coccygeus Sacrotuberous ligament Male © 2012 Pearson Education, Inc. ANAL TRIANGLE

11 -6 Appendicular Musculature • Appendicular Muscles • Position and stabilize pectoral and pelvic girdles • Move upper and lower limbs • Two divisions of appendicular muscles 1. Muscles of the shoulders and upper limbs 2. Muscles of the pelvis and lower limbs © 2012 Pearson Education, Inc.

Figure 11 -13 a An Overview of the Appendicular Muscles of the Trunk Superficial Dissection Axial Muscles Platysma Appendicular Muscles Deltoid Pectoralis major Latissimus dorsi Serratus anterior © 2012 Pearson Education, Inc. Anterior view ATLAS: Plates 25; 39 b

Figure 11 -13 a An Overview of the Appendicular Muscles of the Trunk Deep Dissection Axial Muscles Sternocleidomastoid Appendicular Muscles Trapezius Subclavius Deltoid (cut and reflected) Pectoralis minor Subscapularis Pectoralis major (cut and reflected) Coracobrachialis Biceps brachii Teres major Serratus anterior Anterior view ATLAS: Plates 25; 39 b © 2012 Pearson Education, Inc.

Figure 11 -13 a An Overview of the Appendicular Muscles of the Trunk Superficial Dissection Axial Muscles External oblique Rectus sheath Superficial inguinal ring Appendicular Muscles Tensor fasciae latae Sartorius Rectus femoris Anterior view ATLAS: Plates 25; 39 b © 2012 Pearson Education, Inc.

Figure 11 -13 a An Overview of the Appendicular Muscles of the Trunk Deep Dissection Axial Muscles External intercostal Internal oblique (cut) External oblique (cut and reflected) Rectus abdominis Transversus abdominis Appendicular Muscles Gluteus medius Iliopsoas Pectineus Adductor longus Gracilis Anterior view © 2012 Pearson Education, Inc. ATLAS: Plates 25; 39 b

Figure 11 -13 b An Overview of the Appendicular Muscles of the Trunk Superficial Dissection Axial Muscles Sternocleidomastoid Appendicular Muscles Trapezius Deltoid Infraspinatus Teres minor Teres major Triceps brachii Posterior view ATLAS: Plate 40 a, b © 2012 Pearson Education, Inc.

Figure 11 -13 b An Overview of the Appendicular Muscles of the Trunk Deep Dissection Axial Muscles Semispinalis capitis Splenius capitis Appendicular Muscles Levator scapulae Supraspinatus Rhomboid minor Rhomboid major Posterior view ATLAS: Plate 40 a, b © 2012 Pearson Education, Inc.

Figure 11 -13 b An Overview of the Appendicular Muscles of the Trunk Superficial Dissection Appendicular Muscles Latissimus dorsi Thoracolumbar fascia Iliac crest Gluteus medius Gluteus maximus Posterior view © 2012 Pearson Education, Inc. ATLAS: Plate 40 a, b

Figure 11 -13 b An Overview of the Appendicular Muscles of the Trunk Deep Dissection Axial Muscles Erector spinae muscle group External oblique Posterior view ATLAS: Plate 40 a, b © 2012 Pearson Education, Inc.

11 -6 Appendicular Musculature • Muscles of the Shoulders and Upper Limbs • Four groups 1. Muscles that position the pectoral girdle 2. Muscles that move the arm 3. Muscles that move the forearm and hand 4. Muscles that move the hand fingers © 2012 Pearson Education, Inc.

11 -6 Appendicular Musculature • Muscles That Position the Pectoral Girdle • Trapezius • Superficial • Covers back and neck to base of skull • Inserts on clavicles and scapular spines © 2012 Pearson Education, Inc.

Figure 11 -14 a Muscles That Position the Pectoral Girdle Trapezius Levator scapulae Subclavius Pectoralis minor Pectoralis major (cut and reflected) Internal intercostals External intercostals T 12 Anterior view ATLAS: Plates 39 a-d; 40 a–b © 2012 Pearson Education, Inc.

Figure 11 -14 b Muscles That Position the Pectoral Girdle Superficial Dissection Muscles That Position the Pectoral Girdle Trapezius Posterior view © 2012 Pearson Education, Inc. ATLAS: Plates 27 b; 40 a–b

11 -6 Appendicular Musculature • Muscles That Position the Pectoral Girdle • Rhomboid and levator scapulae • Deep to trapezius • Attach to cervical and thoracic vertebrae • Insert on scapular border © 2012 Pearson Education, Inc.

Figure 11 -14 b Muscles That Position the Pectoral Girdle Deep Dissection Muscles That Position the Pectoral Girdle Levator scapulae Rhomboid minor Rhomboid major Scapula Serratus anterior Triceps brachii T 12 vertebra Posterior view ATLAS: Plates 27 b; 40 a–b © 2012 Pearson Education, Inc.

11 -6 Appendicular Musculature • Muscles That Position the Pectoral Girdle • Serratus anterior • On the chest • Originates along ribs • Inserts on anterior scapular margin © 2012 Pearson Education, Inc.

11 -6 Appendicular Musculature • Muscles That Position the Pectoral Girdle • Subclavius • Originates on ribs • Inserts on clavicle • Pectoralis minor • Attaches to scapula © 2012 Pearson Education, Inc.

Figure 11 -14 a Muscles That Position the Pectoral Girdle Pectoralis minor (cut) Serratus anterior Biceps brachii, short head Biceps brachii, long head T 12 Anterior view ATLAS: Plates 39 a-d; 40 a–b © 2012 Pearson Education, Inc.

Figure 11 -15 b Muscles That Move the Arm Superficial Dissection Muscles That Move the Arm Supraspinatus Deltoid Latissimus dorsi Thoracolumbar fascia © 2012 Pearson Education, Inc. Posterior view Vertebra T 1

Figure 11 -15 a Muscles That Move the Arm Deep Dissection Ribs (cut) Muscles That Move the Arm Subscapularis Coracobrachialis Teres major Biceps brachii, short head Biceps brachii, long head Vertebra T 12 Anterior view © 2012 Pearson Education, Inc.

11 -6 Appendicular Musculature • Muscles That Move the Arm • Infraspinatus and teres minor • Produce lateral rotation at shoulder • Coracobrachialis • Attaches to scapula • Produces flexion and adduction at shoulder © 2012 Pearson Education, Inc.

Figure 11 -15 b Muscles That Move the Arm Deep Dissection Muscles That Move the Arm Supraspinatus Infraspinatus Teres minor Teres major Triceps brachii, long head Triceps brachii, lateral head Posterior view © 2012 Pearson Education, Inc.

11 -6 Appendicular Musculature • Muscles That Move the Arm • Pectoralis major • Between anterior chest and greater tubercle of humerus • Produces flexion at shoulder joint • Latissimus dorsi • Between thoracic vertebrae and humerus • Produces extension at shoulder joint © 2012 Pearson Education, Inc.

11 -6 Appendicular Musculature • Muscles That Move the Forearm and Hand • Originate on humerus and insert on forearm • Exceptions: • The major flexor (biceps brachii) • The major extensor (triceps brachii) © 2012 Pearson Education, Inc.

11 -6 Appendicular Musculature • Muscles That Move the Forearm and Hand • Extensors • Mainly on posterior and lateral surfaces of arm • Flexors • Mainly on anterior and medial surfaces © 2012 Pearson Education, Inc.

11 -6 Appendicular Musculature • Flexors of the Elbow • Biceps brachii • Flexes elbow • Stabilizes shoulder joint • Originates on scapula • Inserts on radial tuberosity • Brachialis and brachioradialis © 2012 Pearson Education, Inc.

Figure 11 -16 b Muscles That Move the Forearm and Hand Coracoid process of scapula Humerus Coracobrachialis Biceps brachii, short head Biceps brachii, long head Triceps brachii, medial head Brachialis Medial epicondyle of humerus Pronator teres Brachioradialis Flexor carpi radialis Palmaris longus Flexor carpi ulnaris Flexor digitorum superficialis Pronator quadratus Flexor retinaculum Anterior view, superficial layer © 2012 Pearson Education, Inc.

Figure 11 -16 a Muscles That Move the Forearm and Hand Triceps brachii, long head Triceps brachii, lateral head Brachioradialis Olecranon of ulna Anconeus Extensor carpi radialis longus Flexor carpi ulnaris Extensor digitorum Ulna Extensor carpi radialis brevis Abductor pollicis longus Extensor pollicis brevis Extensor retinaculum © 2012 Pearson Education, Inc. Posterior view, superficial layer

11 -6 Appendicular Musculature • Flexors of the Wrist • Palmaris longus • Superficial, flexes wrist • Flexor carpi ulnaris • Superficial, flexes wrist, adducts wrist • Flexor carpi radialis • Superficial, flexes wrist, abducts wrist © 2012 Pearson Education, Inc.

11 -6 Appendicular Musculature • Extensors of the Wrist • Extensor carpi radialis • Superficial, extends wrist, abducts wrist • Extensor carpi ulnaris • Superficial, extends wrist, adducts wrist © 2012 Pearson Education, Inc.

11 -6 Appendicular Musculature • Muscles That Move the Forearm and Hand • Pronation and supination • Pronator teres and supinator • Originate on humerus and ulna • Rotate radius • Pronator quadratus • Originates on ulna • Assists pronator teres © 2012 Pearson Education, Inc.

Figure 11 -17 b Muscles That Move the Hand Fingers Supinator Brachialis Cut tendons of flexor digitorum superficialis Muscles That Flex the Fingers and Thumb Flexor pollicis longus Flexor digitorum profundus Pronator quadratus Anterior view, deepest layer © 2012 Pearson Education, Inc.

Figure 11 -17 d Muscles That Move the Hand Fingers Anconeus Supinator Muscles That Move the Thumb Abductor pollicis longus Extensor indicis Extensor pollicis brevis Ulna Tendon of extensor digiti minimi (cut) © 2012 Pearson Education, Inc. Radius Tendon of extensor digitorum (cut) Posterior view, deepest layer

11 -6 Appendicular Musculature • Muscles That Move the Hand Fingers • Also called extrinsic muscles of the hand • Lie entirely within forearm • Only tendons cross wrist (in synovial tendon sheaths) © 2012 Pearson Education, Inc.

Figure 11 -17 a Muscles That Move the Hand Fingers Tendon of biceps brachii Median nerve Pronator teres (cut) Brachial artery Radius Flexor carpi ulnaris (retracted) Brachioradialis (retracted) Muscles That Flex the Fingers and Thumb Flexor digitorum superficialis Flexor pollicis longus Flexor digitorum profundus LATERAL © 2012 Pearson Education, Inc. MEDIAL Anterior view, middle layer

Figure 11 -17 c Muscles That Move the Hand Fingers Anconeus Muscles That Extend the Fingers Extensor digitorum Extensor digiti minimi Abductor pollicis longus Extensor pollicis brevis Tendon of extensor pollicis longus MEDIAL © 2012 Pearson Education, Inc. LATERAL Posterior view, middle layer

11 -6 Appendicular Musculature • Tendon Sheaths • Extensor retinaculum • Wide band of connective tissue • Posterior surface of wrist • Stabilizes tendons of extensor muscles © 2012 Pearson Education, Inc.

Figure 11 -18 b Intrinsic Muscles of the Hand Tendon of extensor indicis Tendons of extensor digitorum Intrinsic Muscles of the Hand First dorsal interosseus muscle Tendon of extensor digiti minimi Abductor digiti minimi Tendon of extensor pollicis longus Tendon of extensor pollicis brevis Tendon of extensor carpi ulnaris Tendon of extensor carpi radialis longus Extensor retinaculum Tendon of extensor carpi radialis brevis Right hand, posterior view © 2012 Pearson Education, Inc.

Figure 11 -18 a Intrinsic Muscles of the Hand Tendon of flexor digitorum profundus Tendon of flexor digitorum superficialis Synovial sheaths Tendons of flexor digitorum Intrinsic Muscles of the Hand Tendon of flexor pollicis longus Lumbricals Palmar interosseus Intrinsic Muscles of the Thumb First dorsal interosseus Adductor pollicis Abductor digiti minimi Flexor pollicis brevis Flexor digiti minimi brevis Opponens digiti minimi Opponens pollicis Palmaris brevis (cut) Abductor pollicis brevis Tendon of palmaris longus Flexor retinaculum Tendon of flexor carpi radialis Tendon of flexor carpi ulnaris Right hand, anterior (palmar) view © 2012 Pearson Education, Inc.