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PowerPoint ® Lecture Slides prepared by Janice Meeking, Mount Royal College C H A P T E R Copyright © 2010 Pearson Education, Inc. 10 The Muscular System: Part B
Copyright © 2010 Pearson Education, Inc. Muscles of the Thorax Muscles of respiration External intercostals—more superficial muscles that elevate ribs for inspiration Internal intercostals—deeper muscles that aid forced expiration Diaphragm Partition between thoracic and abdominal cavities Most important muscle in inspiration Innervated by phrenic nerves
Copyright © 2010 Pearson Education, Inc. Figure 10.10a External intercostal (a) Internal intercostal
Copyright © 2010 Pearson Education, Inc. Figure 10.10b Foramen for esophagus Costal cartilage Lumbar vertebra Xiphoid process of sternum Diaphragm Quadratus lumborum Psoas major Foramen for inferior vena cava Central tendon of diaphragm Foramen for aorta 12th rib (b)
Copyright © 2010 Pearson Education, Inc. Muscles of the Abdominal Wall Four paired muscles; their fasciae and aponeuroses form the lateral and anterior abdominal wall Internal obliques External obliques Transversus abdominis Rectus abdominis
Copyright © 2010 Pearson Education, Inc. Figure 10.11a Transversus abdominis Internal oblique External oblique Aponeurosis of the external oblique (a) Pectoralis major Linea alba Tendinous intersection Rectus abdominis Inguinal ligament (formed by free inferior border of the external oblique aponeurosis) Serratus anterior
Copyright © 2010 Pearson Education, Inc. Muscles of the Abdominal Wall Fascicles of these muscles run at angles to one another, providing added strength All are innervated by intercostal nerves Actions of these muscles Lateral flexion and rotation of the trunk Help promote urination, defecation, childbirth, vomiting, coughing, and screaming
Copyright © 2010 Pearson Education, Inc. Figure 10.11b Transversus abdominis Inguinal ligament Lumbar fascia Lumbar fascia Internal oblique Pubic tubercle Rectus abdominis External oblique (b) IIiac crest
Copyright © 2010 Pearson Education, Inc. Muscles of the Pelvic Floor Pelvic floor (pelvic diaphragm) is composed of two paired muscles Levator ani Coccygeus Both are innervated by sacral nerves
Copyright © 2010 Pearson Education, Inc. Muscles of the Pelvic Floor Functions of the pelvic diaphragm Seals the inferior outlet of the pelvis Supports pelvic organs Lifts pelvic floor to help release feces Resists increased intra-abdominal pressure
Copyright © 2010 Pearson Education, Inc. Muscles of the Perineum Urogenital diaphragm Anterior half of perineum, inferior to pelvic floor Deep transverse perineal muscle External urethral sphincter (voluntary control of urination)
Copyright © 2010 Pearson Education, Inc. Figure 10.12a Pelvic diaphragm Symphysis pubis (a) Levator ani Piriformis Posterior Anterior Coccyx Coccygeus Obturator internus IIiococcygeus Levator ani Pubococcygeus Urogenital diaphragm Urethra Vagina Anal canal
Copyright © 2010 Pearson Education, Inc. Figure 10.12b Inferior pubic ramus External urethral sphincter Urethral opening Vaginal opening Deep transverse perineal muscle Central tendon Anus External anal sphincter Male (b) Female
Copyright © 2010 Pearson Education, Inc. Muscles of the Perineum Muscles of superficial perineal space Ischiocavernosus Bulbospongiosus Superficial transverse perineal muscles External anal sphincter (in posterior half of perineum)
Copyright © 2010 Pearson Education, Inc. Figure 10.12c Male Female Penis Midline raphe Ischiocavernosus Clitoris Urethral opening Anus Vaginal opening Bulbospongiosus Superficial transverse perineal muscle Levator ani (c) Gluteus maximus
Copyright © 2010 Pearson Education, Inc. Superficial Muscles of the Thorax Most are extrinsic shoulder muscles Act in combination to fix the shoulder girdle (mostly the scapula) and move it to increase range of arm movements Actions include elevation, depression, rotation, lateral and medial movements, protraction, and retraction Two groups of muscles: anterior and posterior
Copyright © 2010 Pearson Education, Inc. Superficial Muscles of the Thorax Anterior extrinsic shoulder muscles Pectoralis minor Serratus anterior Subclavius (Pectoralis major considered later with muscles that act on the humerus)
Copyright © 2010 Pearson Education, Inc. Figure 10.13a Subclavius Clavicle Subscapularis Pectoralis minor Coracobrachialis Serratus anterior Humerus Sternocleido- mastoid Deltoid Pectoralis major Sternum Biceps brachii (a)
Copyright © 2010 Pearson Education, Inc. Superficial Muscles of the Posterior Thorax Posterior extrinsic shoulder muscles Trapezius Levator scapulae Rhomboids (major and minor) (Latissimus dorsi considered later with muscles that act on the humerus)
Copyright © 2010 Pearson Education, Inc. Figure 10.13c Trapezius (c) Levator scapulae Supraspinatus Clavicle Spine of scapula Infraspinatus Teres minor Humerus Deltoid Teres major Latissimus dorsi Rhomboid minor Rhomboid major
Copyright © 2010 Pearson Education, Inc. THE MUSCULAR SYSTEM (ANATOMY) CHAPTER # 10(b)
PowerPoint ® Lecture Slides prepared by Barbara Heard, Atlantic Cape Community College C H A P T E R © 2013 Pearson Education, Inc.© Annie Leibovitz/Contact.
Muscles of the Anterior Neck and Throat: Suprahyoid Four deep throat muscles Four deep throat muscles Form the floor of the oral cavity Form the floor.
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Human Anatomy & Physiology, Sixth Edition Elaine N. Marieb PowerPoint ® Lecture.
Table 11-7 Anterior Muscles of the Neck (Figure 11–9)
Muscles Head and Torso Lab 7. Muscles of the Anterior Neck and Throat: Suprahyoid Four deep throat muscles –Form the floor of the oral cavity –Anchor.
Human Anatomy & Physiology FIFTH EDITION Elaine N. Marieb PowerPoint ® Lecture Slide Presentation by Vince Austin Copyright © 2003 Pearson Education, Inc.
Chapter 9B Gross Anatomy and Functions of Skeletal Muscles.
Copyright © 2010 Pearson Education, Inc. Chapter 10 The Muscular System Part B Shilla Chakrabarty, Ph.D.
Muscles of the Trunk (Axial) ppt # Muscles of the Trunk three functional groups –muscles of respiration –muscles that support abdominal wall and.
Set 2: Muscles of trunk and arms. Muscles of Respiration Breathing requires the use of muscles – diaphragm – external intercostal muscles – internal intercostal.
© 2013 Pearson Education, Inc. Muscles of the Abdominal Wall Four paired muscles, their fasciae and aponeuroses form lateral and anterior abdominal wall.
Muscular System Part B Prepared by Vince Austin and W. Rose. Figures from Marieb & Hoehn, 7 th and 8 th eds. Portions copyright Pearson Education.
Myology part 2. © 2012 Pearson Education, Inc. Figure 11-12a Muscles of the Pelvic Floor Superficial Dissections Ischiocavernosus Bulbospongiosus Vagina.
Principle Skeletal Muscles 2 Muscles that act on the abdominal wall, muscles used in breathing and muscles that move the pectoral girdle.
Chapter 10 Muscular System. Terms Insertion – moveable attachment of the muscle Origin – attachment of muscle that remains relatively fixed during muscular.
Sports Medicine Part II : ANATOMY OF THE SPINE, ABDOMEN AND SHOULDER COMPLEX c.W.P. Wagner High School, Sports Medicine, A. Morgan, T. Morgan &
E. Muscles of the Trunk. 1. Muscles of the Thoracic Wall a. intercostals (external/internal) * L: between ribs * A: elevate/depress rib cage (breathing)
The muscles of trunk. Ⅰ The muscles of back 4 The levator scapulae and rhomboideus 1 The trapezius 2 The latissimus dorsi 3 The erector spinae ( sacrospinalis)
Lab #19 Muscles of the chest and abdomen. Lab 19: Muscles of the chest and abdomen Note: if it’s not on the list, you don’t have to locate it or write.
Pectoalis major & minor, serratus anterior, subclavius, levatore scapulae, rhomboideus minor & major, and trapezius.
Lab Activity 11: Group I Muscles Martini Chapter 11 Portland Community College BI 231.
Pelvis. Bony pelvis Composition: formed by paired hip bones, sacrum, coccyx, and their articulations Two portions –Greater pelvis –Lesser pelvis Terminal.
Copyright © 2010 Pearson Education, Inc. Skeletal Muscles: Functional Groups 1.Agonist = Prime mover - Provides the major force for producing a specific.
Anatomy and Physiology I Muscles that Move the Vertebral Skeleton Muscles that Aid in Breathing Muscles of the Abdominal Wall Muscles that Move the Scapula.
Myology. Morphology –Muscle belly 肌腹 –Tendon 肌腱 aponeurosis 腱膜 Classification –Long muscle 长肌 –Short muscle 短肌 –Broad muscle 阔肌 –Orbicular mucle 轮 匝肌.
© 2012 Pearson Education, Inc. Figure 11-3a An Overview of the Major Skeletal Muscles (Part 1 of 6) Axial Muscles Frontal belly of occipitofrontalis Temporoparietalis.
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings C h a p t e r 10 The Muscular System: Axial Musculature PowerPoint ® Lecture.
Shoulder region Bones Joints Muscles Vessels & Nerves.
Splenius capitis Infraspinatus Rhomboid major Erector spinae Gluteus maximus Deltoid Teres minor Teres major Trapezius Latissimus dorsi External oblique.
Muscles of Meditation. Diaphragm O: Costal attachment Inner surface ribs 7-12 Lumbar attachment Upper 2-3 lumbar vertebrae Sternal attachment Inner.
Pelvis + Perineum. Pelvic Cavity Enclosed by bony, ligamentous and muscular wall Contains the urinary bladder, ureters, pelvic genital organs, rectum,
Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Human Anatomy & Physiology SEVENTH EDITION Elaine N. Marieb Katja Hoehn PowerPoint.
The Muscular System P A R T A. Interactions of Skeletal Muscles Skeletal muscles work together or in opposition Muscles only pull (never push) As muscles.
THE AXIAL MUSCLES MARTINI, ANATOMY AND PHYSIOLOGY 9 TH EDITION, CHAPTER 11 - THE AXIAL MUSCLES MARTINI, ANATOMY AND PHYSIOLOGY 9 TH EDITION, CHAPTER 11.
1. Deltoid 2. Pectoralis major 3. Lattisimus dorsi 4. Teres Major 5. Supraspinatus 6. Infraspinatus 7. Teres minor 8. subscapularis ALL have insertions.
Justin R. Stone AH 129 Tortora: Ch 11 Muscles of the Extremities.
Naming Skeletal Muscles Named according to a number of criteria: Direction of muscle fibers relative to longitudinal axis of the muscle – Rectus: Fibers.
Prof. Ahmed Fathalla Ibrahim Professor of Anatomy College of Medicine King Saud University
Epicranius O: Occipital bone I: Skin and muscles around eye F: Raises eyebrow.
Frontalis Orbicularis Oculi Levator Labii Superioris Zygomaticus Minor and Major Orbicularis Oris Masseter Platysma Occipitalis Temporalis Sternocleidomastoid.
1 PECTORAL, BACK AND SCAPULAR REGION Dr.Lubna Nazli.
The Muscular System Major Movers and Shakers BIOL 2400 – Anatomy and Physiology 1 Chapter 11.
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