skeletal muscle microscopic anatomy chapter 10. microscopic anatomy muscle fibers = muscle cells:...

Skeletal Muscle Microscopic Anatomy Chapter 10

Upload: curtis-goodwin

Post on 18-Jan-2018

228 views

Category:

Documents

0 download

Report

Download

Embed Size (px):

DESCRIPTION

Myofibrils: bundles of contractile proteins; fill most of the cytoplasm; 100’s to 1000’s per cell Sarcomeres: the repeating functional unit of contraction in each myofibril

TRANSCRIPT

Skeletal Muscle Microscopic

AnatomyChapter 10

Microscopic Anatomy

• Muscle fibers = muscle cells: long and multinucleate

• Sarcolemma: cell membrane

• Sarcoplasm: cytoplasm; rich in oxygen-storing myoglobinmyoglobin protein

Page 3: Skeletal Muscle Microscopic Anatomy Chapter 10. Microscopic Anatomy Muscle fibers = muscle cells: long and multinucleate Sarcolemma: cell membrane myoglobinSarcoplasm:

• Myofibrils: bundles of contractile proteins; fill most of the cytoplasm; 100’s to 1000’s per cell

• Sarcomeres: the repeating functional unit of contraction in each myofibril

Page 4: Skeletal Muscle Microscopic Anatomy Chapter 10. Microscopic Anatomy Muscle fibers = muscle cells: long and multinucleate Sarcolemma: cell membrane myoglobinSarcoplasm:

• Sarcoplasmic reticulum (smooth ER): stores Ca+

+ (muscle contraction begins when stored Ca++ ions are released into sarcoplasm)

• Mitochondria: provide ATP for contraction

•T tubules (transverse tubules): narrow tubes that are continuous with sarcolemma, conduct impulses

Page 5: Skeletal Muscle Microscopic Anatomy Chapter 10. Microscopic Anatomy Muscle fibers = muscle cells: long and multinucleate Sarcolemma: cell membrane myoglobinSarcoplasm:

Page 6: Skeletal Muscle Microscopic Anatomy Chapter 10. Microscopic Anatomy Muscle fibers = muscle cells: long and multinucleate Sarcolemma: cell membrane myoglobinSarcoplasm:

Page 7: Skeletal Muscle Microscopic Anatomy Chapter 10. Microscopic Anatomy Muscle fibers = muscle cells: long and multinucleate Sarcolemma: cell membrane myoglobinSarcoplasm:

Closer Look at Myofibril Composition

• thin filaments: actin (plus tropomyosin & troponin)

• thick filaments: myosin

Fig. 10.5

Page 8: Skeletal Muscle Microscopic Anatomy Chapter 10. Microscopic Anatomy Muscle fibers = muscle cells: long and multinucleate Sarcolemma: cell membrane myoglobinSarcoplasm:

Sarcomere Structure

• Z lines: the boundary between sarcomeressarcomeres

• A band: overlap of thick (myosin) filaments & thin (actin) filaments

• I band: thin (actin) filaments only

• H zone: thick (myosin) filaments only

Fig. 10.3

MICROSCOPIC SKELETAL MUSCLE ANATOMY · 2019. 8. 22. · Muscle Microanatomy • Multinucleate –Develop from the fusion of multiple myoblasts –Each myoblast has its own nuclues

Lung Anatomy_ Overview, Gross Anatomy, Microscopic Anatomy

Exercise 14 Microscopic Anatomy, Organization, and Classification of Skeletal Muscle

Vertebrate Muscle Anatomy

Microscopic Anatomy of the Skeletal Muscle · 2019-09-06 · Muscle Cell Microscopic structure of Skeletal Muscles Structure Description Long multinucleated cells with a banded (striated)

Slide 1: Skeletal Muscle · Web viewStructure and function of the three major muscle tissues Gross anatomy of skeletal muscles Microscopic anatomy of skeletal muscles Skeletal muscle

Muscle Anatomy 101 Pt2

Microscopic Anatomy Unit 2 Anatomy and Physiology

Skeletal Muscle Skeletal Muscle Anatomy Figure 12-3a-2: ANATOMY SUMMARY: Skeletal Muscle

Microscopic AnatomyGross Anatomy. Levels of Organization in Human Anatomy

Anatomy – Structure Physiology - Function. Gross Anatomy Regional Anatomy Systemic Anatomy Surface Anatomy Developmental Anatomy Microscopic Anatomy –Cytology

· MICROSCOPIC ANATOMY OF SKELETAL MUSCLE 4, ... Insert the correct answers in the numbered answer blanks, 3. 5, 6. A motor neuron and all of the skeletal muscle …

General Anatomy-Muscle - gmch.gov.in lectures/Anatomy/Muscle.pdf · Skeletal Muscle • Muscle belly • Tendon/aponeurosis • Red Muscle: Myofibrils – less numerous striations

Microscopic anatomy of cerebral cortex

7.2 Microscopic Anatomy and Contraction of Skeletal Muscle (fasicle)

Muscle Anatomy 2014. Skeletal Muscle Cardiac Muscle Smooth Muscle

Micro Anatomy Muscle

Chapter 11 Lecture Outline - Palm Beach State College 11-2. Types and Characteristics of ... Microscopic Anatomy of Skeletal Muscle ... exercise –Myoglobin: red

Muscle Contraction. Microscopic Anatomy Sarcolemma= plasma membrane of the muscle cell Filled with myofibrils (look like tubes) Sarcoplasmic Reticulum=

MUSCLE CONTRACTION. Microscopic Anatomy of Skeletal Muscle Sarcomere Contractile unit of a muscle fiber Figure 6.3b

Handbook of Microscopic Anatomy - link.springer.com

Microscopic Anatomy of Heart Muscle Figure 18.11

Muscle Anatomy

Microscopic anatomy of nervous system

MICROSCOPIC ANATOMY HANDBOOK - Semmelweis Egyetem

Microscopic Anatomy CARDIOVASCULAR SYSTEM

Heart Physiology Chapter 11. Microscopic Anatomy Cardiac muscle fibers (cells) Striated, short, and branched One nucleus Plasma membrane of adjacent

Human Anatomy & Physiology Laboratory Manual · Exercise 14 Microscopic Anatomy and Organization of Skeletal Muscle 87 Exercise 15 Gross Anatomy of the Muscular System 93 Exercise

Human Microscopic Anatomy

THE COMPARATIVE MICROSCOPIC ANATOMY

Microscopic Anatomy of Frog Organs

Muscle Types pgs. 181-185 Microscopic Anatomy of Skeletal Muscle pgs. 185-187 *emphasis will be placed on skeletal muscle

MICROSCOPIC ANATOMY AND EMBRYOLOGY II HANDBOOK

Microscopic Anatomy and Organization of Skeletal Muscle 14 & 15