What you will learn today... Muscles allow us to respond to a stimulus Individual muscle fibers respond to a stimulus with an all-or-none response. In.

Slides:



Advertisements
Similar presentations
Chapter # - Chapter Title
Advertisements

CHAPTER 6 STUDY GUIDE MUSCULAR SYSTEM
The ORIGIN of a muscle is on the stationary bone
Fascicle Arrangement Patterns
Anatomy Bowl Prep By: Amanda Morden CHAPTER 7 STUDY GUIDE MUSCULAR SYSTEM.
Skeletal Muscles: Functional Groups
Figure 10.6 Lateral view of muscles of the scalp, face, and neck.
Entry Task: Make a table. One side with three concentric movements, one side with three eccentric movements.
MUSCLES OF THE BODY You need to be able to know the location and action of these muscles!!!
The Muscular System.
Chapter 17 Musculature System.
Muscle Anatomy and Physiology Lab
Anatomy of the Muscular System Anatomy & Physiology.
Muscular System 2014 JEOPARDY!! Intro to the Muscular SystemSkeletal Muscle Features Muscle PerformanceMuscle Types and Skeletal Muscle Components Potpourri.
1 Baseball The Muscular System 2 What role does ATP play in muscle contraction? –Answer: it is the source of energy for the sliding filaments Which muscle.
Muscular System.
Muscle Matters.
Chapter 9 The Muscular System. Chapter 9 The Muscular System.
Attachments and Actions: Body Movements
Muscular System Animal movement is based on contraction of muscles working against part of the skeleton.
Muscles.
The general doctrine of muscle.
Skeletal Muscles.
Muscular System.
Chap 9 – Muscles Part II Learning Objectives: 1.List the criteria for naming muscles. 2.Name the common muscle fascicle arrangements. 3.Define lever, load,
THE MUSCULAR SYSTEM 1. How do skeletal muscles produce movement?
Fall 2010 Anatomy/Physiology
Energy source for contraction ATP ADP + Creatine phosphate = ATP ATP is constantly broken down and rebuilt.
Gross Anatomy of Muscles
Muscular System Lab Exam Diagrams (2014)
Organization of Skeletal Muscle
INTRODUCTION TO MUSCLES
Chap 10 - Muscles Learning Objectives:
Gross Anatomy of the Mucular System
Epicranius (frontal belly)
The Muscular System Chapter 10.
Muscle Anatomy.
Muscular Anatomy Overview of Major Muscles. ©Thompson Educational Publishing, Inc All material is copyright protected. It is illegal to copy any.
Middlesex County College Anatomy and Physiology I
Stephen Springer Nolan Wool. Movement Posture Fluid Propulsion Generate Heart Beat.
MAJOR MUSCLES.
Muscle Identification Practice
 Movement  Posture  Stabilize joints  Generate heat.
Skeletal Muscle Groups
Lecture Presentation by Patty Bostwick-Taylor Florence-Darlington Technical College Chapter 6 The Muscular System © 2015 Pearson Education, Inc.
Organization of Muscle Parallel Muscles- fascicles are parallel to the long axis of the muscle Convergent Muscles- fibers are spread over a broad area,
© 2015 Pearson Education, Inc.
Muscular System PART II
Muscular System Chapter 8. Introduction Muscles are responsible for movement –Contraction & relaxation Muscles make up 40 – 50 % of a human’s total body.
1. Galea Aponeurotica2. Epicranius3. Orbicularis Oculi4. Nasalis5. Levator Labii Superioris 6. Zygomaticus major & minor 7. Orbicularis Oris 8.
O RGANIZATION OF S KELETAL M USCLE. S KELETAL M USCLE O RGANIZATION Connective Tissue Coverings Skeletal muscles are attached to tendons which attach.
Chapter 9: Muscular System
SKELETAL MUSCLE LAB BIO 137 Anatomy & Physiology I.
MAJOR SKELETAL MUSCLES
Chapter 9 Muscular System.
Muscular System PART II
Muscular system Hawler Medical University College of Medicine Department of Anatomy & Histology Dr. Nali Abdulkader Maaruf.
Head. Masseter Mandible Sternocleidomastoid Chest.
Naming of Skeletal Muscles page 181 Direction of muscle fibers Example: rectus (straight) Relative size of the muscle Example: maximus (largest)
Muscles. Muscles in Cranium 1.Zygomatic 2.Buccinator 3.Orbicularis oculi 4.Frontalis 5.Orbicularis oris 6.Masseter 7.Temporalis 8.Occipitalis 9.Platysma.
WARM UP “Challenge your mind – stretch and exercise it like any other part of your body.” 1.Why do you think this advice is important to follow? 2.Give.
MUSCULAR SYSTEM. Muscle Diagram M. Adductor Longus N. Sartorius O. Extensor Digitorum Longus P. Trapezius Q. Lassisimus Dorsi R. Triceps Brachii S. Extensor.
Chapter 10 The Muscular System
Muscle Diagrams Labels Anterior and Posterior Muscle Quiz Friday 11/7 Matching! Arm and Leg Muscle Quiz Wednesday 11/13 Matching!
Skeletal Muscle Groups. Muscles of the head and neck Frontal – raises eyebrows Orbicularis oculi – closes eye Orbicularis oris – puckering Zygomaticus.
1. 2 Chapter 9 The Muscular System 3 Introduction Skeletal muscles: movement in environment Smooth muscles: intestines, ureters, veins and arteries Cardiac.
TERMS RELATING TO MUSCLES Muscles attach to at least two bones. Origin-the attachment of a muscle to the less movable bone. Usually near the axial skeleton.
Presentation transcript:

What you will learn today... Muscles allow us to respond to a stimulus Individual muscle fibers respond to a stimulus with an all-or-none response. In other words, the muscle fiber contracts to its maximum potential or not at all Once a muscle has contracted, it must relax before it can contract again. Muscles work in pairs that have opposite functions Muscle contractions can be weak and intermittent or strong and permanent Actin and myosin allow a muscle fiber to contract by sliding across each other

Muscle Fatigue Prolonged or repetitive use of a muscle group leads to muscle fatigue. Fatigue produces a sense of weakness and even discomfort. (EXAMPLE: Carrying a heavy load or walking up a flight of stairs) Exercise improves muscular function and delays the onset of fatigue.

Make A Hypothesis: Continuous Grip

Make A Hypothesis: Repetitive Grip

The Muscular System Check out those guns!

Muscles are largely responsible for our body weight and appearance

Skeletal Muscles A. Muscles are effectors that allow us to respond to a stimulus. B. Muscles work in pairs called flexors (bend a limb) and extensors (straighten a limb).

Muscles Work in PairsPairs 1. Muscles are attached to bones by tendons. 2. The middle of the muscle is called the belly and shortens when the muscle contracts. 3. The part of the muscle that is attached to stationary bone is called origin. 4. The part of the muscle that is on the bone that moves is called the insertion.

BicepsBiceps Brachii

All-or-none Law: a muscle fiber (cell) either responds to a stimulus or it does not. Once it responds, it will contract. The strength of the contraction of a whole muscle depends on the number of muscle fibers in that muscle that are contracting.

Types of contractionscontractions A. Muscle twitch: contraction for fractions of a second B. Summation and Tetanus: maximal sustained contaction until muscle fatigues C. Muscle tone: permanent contraction of muscles

Exercise increases the endurance and strength of muscles

The muscle fiber (cell) A. Cell membrane = sarcolemma B. Cytoplasm = sarcoplasm C. Endoplasmic reticulum = sarcoplasmic reticulum D. The SR encases myofibrils, which have contractile units called sarcomeres. 1. Actin 2. Myosin

Muscle Fiber

E. The Sliding-filament theory: Actin and myosin movement in relationship to each other causes the sarcomere to shorten

Your Assignment Use the anatomy books to identify the following human muscles on the worksheets. Zygomaticus major Orbicularis Oculi Frontalis Temporalis Masseter Orbucularis Oris Buccinator Sternocleidomastoid External Intercostals Deltoid Rectus abdominis External Oblique Internal Oblique Transversus abdominis Pectoralis major Sternocleidomastoid Trapezius Latissimus dorsi Deltoid Hamstrings (Biceps femoris, semimembranosus, semitendinosus) Iliopsoas Tibialis Anterior Gluteus maximus Adductor Group Quadriceps (Vastus lateralis, Vastus medius, Rectus femoris, Vastus intermedius) Gluteus medius Peroneus brevus and longus Gastrocnemius Deltoid Flexor carpi ulnaris Extensor digitorum Biceps brachii Flexor digitorum superficialis Triceps brachii

References D-Palmer/Lessons-on-Massage/images/fig-17-Showing- Action-of-Biceps.pnghttp://chestofbooks.com/health/body/massage/Margaret- D-Palmer/Lessons-on-Massage/images/fig-17-Showing- Action-of-Biceps.png pghttp:// pg advisor.com/images/actin_myosin.jpghttp:// advisor.com/images/actin_myosin.jpg