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Skeletal Muscle Review Anatomy and Physiology I Unit 8 – The Muscular System.

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Presentation on theme: "Skeletal Muscle Review Anatomy and Physiology I Unit 8 – The Muscular System."— Presentation transcript:

1 Skeletal Muscle Review Anatomy and Physiology I Unit 8 – The Muscular System

2 The Skeletal Muscles There are about 650 muscles in the human body. They enable us to move, maintain posture and generate heat. In this section we will only study a sample of the major muscles.

3 Flexion Types of Musculo-Skeletal Movement

4 Extension

5 Hyperextension

6 Abduction, Adduction & Circumduction

7 Rotation

8 Muscle Attachments Origin Insertion

9 Sternocleidomastoideus Flexes and Rotates Head

10 Masseter Elevate Mandible

11 Temporalis Elevate & Retract Mandible

12 Trapezius Extend Head, Adduct, Elevate or Depress Scapula

13 Latissimus Dorsi Extend, Adduct & Rotate Arm Medially

14 Deltoid Abduct, Flex & Extend Arm

15 Pectoralis Major Flexes, adducts & rotates arm medially

16 Biceps Brachii Flexes Elbow Joint

17 Triceps Brachii Extend Elbow Joint

18 Rectus Abdominus Flexes Abdomen

19 External Oblique Compress Abdomen

20 External Intercostals Elevate ribs

21 Internal Intercostals Depress ribs

22 Diaphragm Inspiration

23 Forearm Muscles Flexor carpi—Flexes wrist Extensor carpi—Extends wrist Flexor digitorum—Flexes fingers Extensor digitorum—Extends fingers Pronator—Pronates Supinator—Supinates

24 Gluteus Maximus Extends & Rotates Thigh Laterally

25 Rectus Femoris Flexes Thigh, Extends Lower Leg

26 Gracilis Adducts and Flexes Thigh

27 Sartorius Flexes Thigh, & Rotates Thigh Laterally

28 Biceps Femoris Extends Thigh & Flexes Lower Leg

29 Gastrocnemius Plantar Flexes Foot & Flex Lower Leg

30 Tibialis Anterior Dorsiflexes and Inverts Foot


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