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Skeletal Muscle Review Anatomy and Physiology I Unit 8 – The Muscular System
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.
Flexion Types of Musculo-Skeletal Movement
Abduction, Adduction & Circumduction
Muscle Attachments Origin Insertion
Sternocleidomastoideus Flexes and Rotates Head
Masseter Elevate Mandible
Temporalis Elevate & Retract Mandible
Trapezius Extend Head, Adduct, Elevate or Depress Scapula
Latissimus Dorsi Extend, Adduct & Rotate Arm Medially
Deltoid Abduct, Flex & Extend Arm
Pectoralis Major Flexes, adducts & rotates arm medially
Biceps Brachii Flexes Elbow Joint
Triceps Brachii Extend Elbow Joint
Rectus Abdominus Flexes Abdomen
External Oblique Compress Abdomen
External Intercostals Elevate ribs
Internal Intercostals Depress ribs
Forearm Muscles Flexor carpi—Flexes wrist Extensor carpi—Extends wrist Flexor digitorum—Flexes fingers Extensor digitorum—Extends fingers Pronator—Pronates Supinator—Supinates
Gluteus Maximus Extends & Rotates Thigh Laterally
Rectus Femoris Flexes Thigh, Extends Lower Leg
Gracilis Adducts and Flexes Thigh
Sartorius Flexes Thigh, & Rotates Thigh Laterally
Biceps Femoris Extends Thigh & Flexes Lower Leg
Gastrocnemius Plantar Flexes Foot & Flex Lower Leg
Tibialis Anterior Dorsiflexes and Inverts Foot
Skeletal Muscles: Head, Neck and Trunk Muscles 10-1.
Muscular System Human Anatomy and Physiology I Oklahoma City Community College Dennis Anderson.
The Muscular System. Did you know that ? -more than 50% of body weight is muscle ! -And muscle is made up of proteins and water.
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The Muscular System. or “Everything you ever wanted to know about Muscles, but were afraid to ask” !!!
SKELETAL MUSCLE LAB BIO 137 Anatomy & Physiology I.
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Body muscles. Biceps Position front of upper arm Action Flexes elbow, supinates forearm and hand.
© 2009 The McGraw-Hill Companies, Inc. All rights reserved 26-1 Attachments and Actions: Body Movements Flexion – bending a body part Extension – straightening.
Skeletal Muscle Groups. Head and Neck Facial muscles –Orbicularis oculi= circular muscle around the eye –Orbicularis oris= circular muscle around the.
Chapter 8 MUSCULAR SYSTEM. All movements require muscles, which are organs that use chemical energy to contract. Walking, breathing, eating, sneezing,
Major Skeletal Muscles The muscle name indicates – Location – Size – Action – Shape OR – Number of attachments of the muscle.
Skeletal Muscle Groups. Muscles of the head and neck Frontal – raises eyebrows Orbicularis oculi – closes eye Orbicularis oris – puckering Zygomaticus.
Honors Anatomy Nov 16 SAP2b: Explain how the skeletal structures provide support and protection for tissues, and function together with the muscular system.
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PowerPoint ® Lecture Slide Presentation by Patty Bostwick-Taylor, Florence-Darlington Technical College Copyright © 2009 Pearson Education, Inc., publishing.
Muscles. What you Need to Know Look briefly at the Structure of: 1) Skeletal, 2) Smooth & 3) Cardiac Muscle Naming, Identification, Functions You are.
Frontalis – Elevates eyebrow Orbicularis oculi – Flexes eye Zygomaticus – Elevates lips Orbicularis oris – Flexes lips Masseter – Elevates mandible.
Muscle Action Review … for Origin, Insertion & Action Test.
Muscles of the arms and legs. Muscles that move the forearm Biceps brachii – flexes the forearm and supinates the hand Brachialis – Flexes forearm Brachioradialis.
BIO 210 Chapter 10 Part 2 Important Skeletal Muscles.
The Muscular System. Muscles in the Body There are over 650 muscles in the human body. They are named due to many factors.
MUSCULAR SYSTEM. Muscle Diagram M. Adductor Longus N. Sartorius O. Extensor Digitorum Longus P. Trapezius Q. Lassisimus Dorsi R. Triceps Brachii S. Extensor.
LOWER MUSCLES. Muscles of the thorax (respiratory muscles) 1. Internal Intercostals Action - Depress ribs 2. External Intercostal Action - Elevate ribs.
Naming of Skeletal Muscles page 181 Direction of muscle fibers Example: rectus (straight) Relative size of the muscle Example: maximus (largest)
Appendicular Muscles with functions. Shoulder Muscles.
THE MUSCULAR SYSTEM 1.How do skeletal muscles produce movement? 2.Group movements 3.Review of superficial skeletal muscles – anterior 4.Review of superficial.
Extrinsic Shoulder Muscles Muscles of the thorax –Anterior: pectoralis major, pectoralis minor, serratus anterior, and subclavius –Posterior: latissimus.
Advanced Biology Chapter 10. NECK MUSCLES A Sternocleidomastoid Sternocleidomastoid Flexes head Flexes head.
Muscles Crossing the Shoulder Nine muscles cross the shoulder joint and insert into the humerus Prime movers include: Pectoralis major – arm flexion Latissimus.
“Movers and Shakers”. A useful website
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Review. Which of the following is an antagonist to the Flexor Carpi Radialis? A)Levator scapula B)Rhomboidus major C)Extensor carpi radialis D)Plamaris.
CHAPTER 6 The Muscular System Skeletal Muscles of the Head, Neck, Trunk, Arm and Leg STUDY GUIDE FOR TEST ON FRIDAY FEB. 10, 2012.
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings MUSCLE ORIGIN, INSERTION, AND ACTION THE MUSCLULAR SYSTEM.
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Muscles of the Anterior & Posterior Thorax External intercostals Internal intercostals Diaphragm Pectoralis minor Pectoralis major Trapezius Rhomboids.
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