P - Muscular System System. Skeletal Muscle Structure Skeletal Muscle: The muscle that moves the body. (including arm/leg movement and facial expressions)

Slides:

Advertisements

Similar presentations

The Muscular System.

Advertisements

Muscular System.

Muscle Tissue Chapter 8 Bio201.

Muscle – CSM 1040 Dr. Melanie Osterhouse I. Fxn of m – skeletal m. is about 40% of body mass a. b. c. d.

Muscular System adapted from

Types of Muscle Skeletal – striated & voluntary

Contraction of skeletal muscles

Mechanism of muscle contraction. The sliding filament Theory The way that muscles actually contract and shorten is a theory called the sliding filament.

MUSCLE. Skeletal Muscle Muscle attaches to bones by tendons at both ends –The less movable end (anchor) is called the origin –The end where bones moves.

IB Biology HL II Clegg: Musculosketal System IB Biology HL II Clegg:

Objective 3 Describe and diagram the microscopic structure of skeletal muscle fibers.

Muscle Physiology.

TYPES OF MUSCLE SKELETAL MUSCLE. Skeletal Muscle They are used in locomotion and all other voluntary movement. They are fastened to the bones of the.

The Muscular System. MUSCULAR SYSTEM Types of Muscle Tissue: Skeletal, Smooth, and Cardiac Skeletal, aka “striated” voluntary – attached to bones and.

NHS - HUMAN ANATOMY/PHYSIOLOGY Dr. Smith CHAPTER 6

Muscular System Muscle Contraction.

Muscular System. Types of Muscle ● Skeletal – striated & voluntary ● Smooth – involuntary ● Cardiac - heart The word “striated” means striped. Skeletal.

The Muscular System Skeletal muscle consists of numerous muscle cells called Muscle fibers. Muscle fiber terminology and characteristics Sarcolemma = plasma.

Energy for Muscle Contraction Direct Phosphorylation Aerobic Respiration Anaerobic Glycolysis.

Unit 4 Muscular System 1.

Functions of skeletal muscles 4 Movement 4 Maintain posture and body position 4 Support soft tissues, ex abdominal wall supports ventral body organs 4.

CHAPTER 45.3 Muscular System. Function = Allows body to move & provides force that pushes substances through out the body Voluntary vs. Involuntary: contractions.

Chapter 8 Muscular System.

Muscular System. Types of Muscle ● Skeletal – striated & voluntary ● Smooth – involuntary ● Cardiac - heart The word “striated” means striped. Skeletal.

Quiz – Write question and answer

Muscular System. Muscular System Functions: 1. produce movement 2. Maintain posture 3. Stabilize joints 4. Generate heat 5. Move substances (fluid, food.

Microscopic Structure Skeletal Muscle Cells: muscle fibers (what are bone cells called?) Highly organized and grouped together Each fiber contains protein.

Chapter 9 Muscular System

Muscles Smooth - no striations, involuntary visceral organs

II. Skeletal Muscle Overview A. Skeletal Muscle Distinguishing Characteristics Striated Voluntary Multi-nucleated B. Functions Movement Maintain Posture.

Muscular System. Types of Muscle ● Skeletal – striated & voluntary ● Smooth – involuntary ● Cardiac - heart The word “striated” means striped. Skeletal.

Functions of skeletal muscles 4 Movement 4 Maintain posture and body position 4 Support soft tissues, ex abdominal wall supports ventral body organs 4.

Microscopic Anatomy of the Skeletal Muscles Taking a look at the individual muscle fiber and how it works with other fibers.

Muscle Energy. ATP  High Energy molecule  Used for muscle movement (and many other things.

Lecture #21 Date ____ n Chapter 49 ~ Sensory and Motor Mechanisms.

Muscle Physiology Anatomy & Physiology/Tissues, Bones and Muscles.

Muscular System. The Muscular System Overview Muscles make up the bulk of the body and account for about one-third of its weight. Their ability to contract.

© 2012 Pearson Education, Inc. PowerPoint ® Lecture Slides Prepared by Patty Bostwick-Taylor, Florence-Darlington Technical College C H A P T E R 6 The.

THE MUSCULAR SYSTEM. FUNCTIONS OF MUSCLE PRODUCING MOVEMENT – BOTH INTERNAL AND WHOLE – BODY MAINTAINING POSTURE STABILIZING JOINTS GENERATING HEAT.

MUSCULAR SYSTEM NHS - HUMAN ANATOMY/PHYSIOLOGY Dr. Smith CHAPTER 6.

Muscular System Chapter 9. Three types of Muscle Tissue  Skeletal  Smooth  Cardiac.

Muscle System. Root Words 3 Kinds of Muscle Skeletal Smooth (stomach, intestine) Cardiac.

Section Sarcolemma- plasma membrane of a muscle fiber 2. Sarcoplasm- cytoplasm 3. Sarcoplasmic reticulum- smooth ER that stores Ca Myofibrils-

UNIT 7: MUSCULAR SYSTEM Chapter 9. GENERAL OVERVIEW: STRUCTURE –Hierarchy of skeletal muscles: muscle, fascicles, fibers, myofibrils, myofilaments –Coverings.

The Muscular System Learn the basic anatomy of a muscle fiber Become familiar with the terms and structure of muscle tissue.

Muscles Section 9.4. Muscles 3 Types of Muscle Tissue  1. Cardiac: muscles of the heart. (Involuntary Control)  2. Smooth: muscle Stomach, esophagus,

Microanatomy of Muscles Ch. 6b. Microscopic Anatomy of Skeletal Muscle Slide 6.9a Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings.

ELAINE N. MARIEB EIGHTH EDITION 6 Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings PowerPoint ® Lecture Slide Presentation by.

Muscular System.

Chapter 6 Muscular System

The Muscular System.

The Muscular System.

Chapter 6 Muscular System.

The Physiology of Muscle Contractions

MUSCULAR SYSTEM I pp

EQ: How do our muscles in our body contract?

Muscular System Notes Unit 6.

Introduction The Muscular System.

(8) Energy systems in muscle cells

Muscle anatomy and Energy

Chapter 8 muscular system

November 2017 Journal: Explain the process of sliding filament theory.

MUSCULAR SYSTEM I pp

Muscular System Chapter 45.3.

Types, Function, and Components Chapter 9 Section

Chapter 9 Muscular System

Types of Myofilaments.

The Muscular System Dr. M. Diamond.

Presentation transcript:

p - Muscular System System

Skeletal Muscle Structure Skeletal Muscle: The muscle that moves the body. (including arm/leg movement and facial expressions)

k j

Skeletal Muscle Parts of the Skeletal muscle: Made up of bundles of long multinucleated cells called fibers These fibers are enclosed in a membrane called the sarcolemma Inside the sarcolemma are tiny myofilaments (Myofibril = 1 )

The Muscle Fiber

Myofilament (myofibril) Up Close Two kinds of myofilaments: -actin: thin filaments -myosin: thick filaments These two filaments overlap forming striations giving it a striped appearance

k j

Zones on the Myofilament Z lines: Anchor the filaments. Sacromere: The area between the anchors

Sliding-Filament Theory Explains how muscles contract. Steps to contracting a muscle: 1) Muscles shorten by the sliding movement of the actin filaments over the myosin filaments

Sliding-Filament Theory 2)This sliding brings the two myosin closer together this brings the Z lines closer as well How do the actin and myosin filaments slide over each other?

Sliding-Filament theory j

Sliding-Filament Theory j

j

j

j

j

ATP and Sliding-Filament theory ATP: The energy needed to power the sliding filaments. This energy is required to allow the cross bridge to release Without ATP the muscle will not be able to contract.

Muscle Fatigue Causes of Muscle Fatigue: 1)Lack of energy 2)Build up of waste Energy Demand from Muscles: Most ATP comes from cellular respiration by the breakdown of glucose. The role of creatine phosphate:

Muscle Fatigue Causes of Muscle Fatigue: 1)Lack of energy 2)Build up of waste Energy Demand from Muscles: Most ATP comes from cellular respiration by the breakdown of glucose. The role of creatine phosphate: Found in all muscle cells. It acts as a supply of phosphate for ADP so it can be converted into ATP

When Supply Does not Meet Demand When More ATP is needed then your muscle cells can make: Lactic acid builds up in muscle tissues creating a burning sensation. This is known as oxygen debt.

When Supply Does not meet demand When More ATP needed then your muscle cells can make: Lactic acid builds up in muscle tissues creating a burning sensation. This is known as oxygen debt. This build up of acidic fluid eventually stops muscle contractions. Rapid breathing after exercise is the bodies way of trying to increase the oxygen content in the muscle.

Assignment pg