The muscular system consists of three main types of muscles - skeletal, smooth, and cardiac. Skeletal muscles are voluntary and allow for movement, posture, and protection. They make up over 600 muscles in the body. Smooth muscles are involuntary and control functions like digestion and respiration. Cardiac muscle is only found in the heart and contracts regularly to circulate blood. The muscular system works with bones and is controlled by the nervous system to provide strength, movement, and thermoregulation for the body.

1. MUSCULAR
SYSTEM

2. INTRODUCTION
 DEFINITION: This is an organ system
involves muscles, bones and cardiac
muscles.
FUNCTIONS OF MUSCLES
 Movement
 Shape/posture
 Protection
 Circulation of blood through out the body
 Thermostatic action

3.  There are over 600 skeletol muscles in the
body
 Among them 150 present in head and neck
 The muscular system in vertebrates is
controlled through the nervous system.

4. TYPES MUSCLES
 SKELETAL MUSCLES: it is also known as
voluntary muscles
 SMOOTH MUSCLES:involuntary muscles
 CARDIAC MUSCLES
 Muscles provide strength, balance, posture,
movement and heat for the body to keep
warm.

5.  SKELETAL MUSCLES: these are voluntary
control
 Examples like everyday actions such as
walking, running, and jumping.
 Major skeletal muscles are
deltoid,biceps,triceps,trapezius etc…

6.  SMOOTH MUSCLES: these are involuntary
muscles.
 this type of muscles work automatically
 Example: muscles of digestive system
muscles of respiratory system, muscles of eye
and cardiac system.

7.  CARDIAC MUSCLE:it is a special type of
involuntary muscle
 It is only found in heart
 It contracts regularly,continously without rest.
 It works automatically but under the control of
nervous system.

8. TYPES OF MUSCULAR
CONTRCTION
 ISOTONIC AND CONCENTRIC
 ISOTONIC AND ECCENTRIC
 ISOMETRIC
ISOTONIC AND CONCENTRIC: our
muscles shorten as they contract.
Example: exercise

9.  ISOTONIC AND ECCENTRIC
muscles lengthen as they contract in
tension
 Examples: polymetric exercise.
 ISOMETRIC:muscles stay the same length as
they contract
 Example: shoulder muscles

10.  Muscles can work as
 Flexors
 Extensors
 Prime movers
 Antagonists
 Fixators
 Synergists

11. ICD-10-CM-GUIDELINES
 Infectious arthropathies(M00-M02)
 Autoinflammatory syndromes-M04
 Inflammatory polyarthropathies(M05-M14)
 Osteoarthritis(M15-M19)
 Other joint disorders(M20-M25)
 Dentofacial anomalles and other disorders of
jaw(M26-M27)

12.  Systemic connective tissue disorders(M30-
M36)
 Deforming dorsopathies(M40-M43)
 Spondylopathies(M45-M49)
 Other dorsopathies(M50-M54)
 Disorders of muscles(M60-M63)
 Disorders of synovium and tendon(M65-M67)
 Other soft tissue disorders(M70-M79)

13.  Disorders of bone density and structure(M80-
M85)
 Other osteopathies(M86-M90)
 Chondropathies(M91-M94)
 Other disorders of MSK and connective
tissue-M-95
 Intraoperative and post procedural
complications and disorders of MSK,not
elsewhere classified-M96

14.  Periprosthetic fracture around internal
prosthetic joint(M97)
 Biomechanical lesions,not elsewhere
classified(M99)
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