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.

Slides:



Advertisements
Similar presentations
10 The Muscular System.
Advertisements

Muscles Head and Torso Lab 7.
Muscles of the Anterior Neck and Throat: Suprahyoid
The Muscular System Part C
The Muscular System: Part B
Muscular system Chapter 8.
Skeletal Muscles: Functional Groups
Figure 10.6 Lateral view of muscles of the scalp, face, and neck.
The Muscular System Part A
Gross Anatomy and Functions of Skeletal Muscles
Naming Muscles Skeletal muscles are named according to certain criteria A. Location- may indicate bone or body region that muscle is associated with Ex.
10 The Muscular System.
The Muscular System Part B
The Muscular System Chapter 10. Understanding Muscles Pull never push Attach to skeleton via tendons or muscles via aponeurosis Attachment points – Origin:
Muscular System Part B Prepared by Vince Austin and W. Rose.
Muscular System Notes Part 5.
Muscular system.
Muscular System.
BIO L 105-lab 9 Muscle Gross Ana
Muscle Info… General Info: -Muscles always pull and never push bones…
ANATOMY OF THE MUSCULAR SYSTEM
Interactions of Skeletal Muscles Skeletal muscles work _________________________ or in _ Muscles only _______________(never push) As muscles shorten, the.
Muscular Dystrophy Muscular dystrophy
Naming Muscles. Muscles causing movement… Skeletal Muscle – an organ made of several different types of tissue including muscle tissue, vascular tissue.
Chapter 11 Axial Muscles of the body
Muscular System Part A Prepared by Vince Austin and W. Rose. Figures from Marieb & Hoehn, 7 th and 8 th eds. Portions copyright Pearson Education.
Muscles.
Skeletal Muscle Skeletal muscle is attached to bone on each end by tendons. Insertion: More movable attachment. Origin: Are pulled towards it (fixed point).
Chapter 10 Muscular System.
Interactions of Skeletal Muscles Skeletal muscles work together or in opposition Skeletal muscles work together or in opposition Muscles only pull (never.
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 Part B
Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Human Anatomy & Physiology SEVENTH EDITION Elaine N. Marieb Katja Hoehn PowerPoint.
10 The Muscular System Part A. Interactions of Skeletal Muscles  Skeletal muscles work together or in opposition  Muscles only pull (never push)  As.
Interactions of Skeletal Muscles Skeletal muscles work together or in opposition Muscles only pull (never push) As muscles shorten, the insertion generally.
THE MUSCULAR SYSTEM 1. How do skeletal muscles produce movement?
1 Myology Muscles of the Head. 2 NAMING OF MUSCLES 1. Direction of muscle fibers: a. Rectus: fibers run parallel to the midline (rectus abdominis) b.
Gross Anatomy and Functions of Skeletal Muscles
Lab 14 Muscles Overview. Muscle Labs Most of the labs for the next two weeks will consist of looking at models and diagrams to learn the muscles. The.
Chapter 10 The Muscular System Part A.
INTRODUCTION TO MUSCLES
Muscle Kinesiology Anatomy & Physiology.
The Muscular System Chapter 10.
Muscle Anatomy.
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Human Anatomy & Physiology, Sixth Edition Elaine N. Marieb PowerPoint ® Lecture.
Organization of Muscle Parallel Muscles- fascicles are parallel to the long axis of the muscle Convergent Muscles- fibers are spread over a broad area,
Muscles of the Body Chapter 11 ehow.com. Objectives Know the five main shapes of muscle Understand how muscles fit into functional groups and what those.
Origin Classification and Naming
REVIEW INTRO. MUSCLES OF FACE & NECK. Rectus fibers Under splenius Oblique fibers.
Muscular system. Types of the muscle Skeletal:striated, and voluntary. Skeletal:striated, and voluntary. Smooth:nonstiated, and involuntary. Smooth:nonstiated,
SKELETAL MUSCLE LAB BIO 137 Anatomy & Physiology I.
MAJOR SKELETAL MUSCLES
Muscles Continued Pages:
Muscular System PART II
Chapter 11 Axial Muscles of the body Course objectives: Name and be able to identify specific axial muscles in the body. Know the origin and insertion.
Naming Muscles. Muscles causing movement… ■ Skeletal Muscle – an organ made of several different types of tissue including muscle tissue, vascular tissue.
Naming of Skeletal Muscles page 181 Direction of muscle fibers Example: rectus (straight) Relative size of the muscle Example: maximus (largest)
Muscle Basics Over 600 muscles in the body Each is attached to bones or other structures by no fewer than 2 points 1.Origin: the immovable (or less movable)
MUSCULAR SYSTEM. Muscle Diagram M. Adductor Longus N. Sartorius O. Extensor Digitorum Longus P. Trapezius Q. Lassisimus Dorsi R. Triceps Brachii S. Extensor.
The Muscular System. Muscles in the Body There are over 650 muscles in the human body. They are named due to many factors.
Chapter 10 The Muscular System
Copyright © 2015 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education.
Muscular System Gross Anatomy Chapter 11.
Muscles Head, Neck and Torso.
Major Muscles of the Upper Body
The muscular system I “Muscles of the head neck and trunk”
Skeletal Muscles “Muscle Man”.
Body movements.
Interactions of skeletal muscles
The Muscular System Part 2
Presentation transcript:

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 contract, the insertion generally moves toward the origin

Muscle Classification: Functional Groups Prime movers – provide the major force of a movement Antagonists – oppose or reverse a particular movement Synergists Add force to a movement Reduce undesirable movement Fixators – synergists that immobilize a bone or muscle’s origin

Naming Skeletal Muscles Location of muscle – based on bone or body region Shape of muscle – e.g., the deltoid muscle (deltoid = triangle) Relative size – e.g., maximus (largest), minimus (smallest), longus (long) Direction of fibers – e.g., rectus, transversus, and oblique

Naming Skeletal Muscles Number of origins – e.g., biceps and triceps Location of attachments – named according to point of origin or insertion Action – e.g., flexor or extensor

Muscles: Name, Action, and Innervation Name and description of the muscle – be alert to information given in the name Origin and insertion – there is always a joint between the origin and insertion Action – best learned by acting out a muscle’s movement on one’s own body

Muscles of the Scalp Epicranius (occipitofrontalis) – bipartite muscle consisting of the: 1. Frontalis 2. Occipitalis 3. Galea aponeurotica Pulls the scalp forward and backward

Muscles of the Scalp, Face, and Neck Figure 10.6

Muscles of Mastication Prime movers – temporalis, masseter, and platysma Temporalis elevates jaw Masseter elevates jaw Platysma depresses jaw

Muscles of Mastication Figure 10.7a

Muscles of the Neck: Head Movements Major head flexor is the sternocleidomastoid Lateral head movements = sternocleidomastoid and scalenes Head extension is accomplished by the splenius muscles and trapezius

Muscles of the Neck: Head Movements Figure 10.9a

Muscles of the Neck: Head Movements Figure 10.9b

Muscles of the Abdominal Wall The abdominal wall is composed of four paired muscles (internal and external obliques, transversus abdominis, and rectus abdominis) and their aponeuroses Fascicles of these muscles run at right and oblique angles to one another

Muscles of the Abdominal Wall In addition to forming the abdominal wall, these muscles: Are involved with lateral flexion and rotation of the trunk Help promote urination, defecation, childbirth, vomiting, coughing, and screaming

Muscles of the Abdominal Wall Figure 10.11b

Extrinsic Shoulder Muscles Muscles of the thorax Anterior: pectoralis major, pectoralis minor, serratus anterior Posterior: latissimus dorsi, trapezius muscles, levator scapulae, and rhomboids These muscles are involved with the movements of the scapula Prime movers of shoulder elevation are the trapezius and levator scapulae