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The Muscular The Muscular System System

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Page 1: The Muscular System. bundle of muscle fibers muscle fiber (cell) myofibril sarcomere Gross Anatomy of Skeletal Muscle

The Muscular The Muscular SystemSystem

bundle of muscle fibers

muscle fiber(cell)

myofibril

sarcomere

Gross Anatomy of Skeletal Muscle

Connective Tissue Sheaths Connective Tissue Sheaths

–Endomysium–Perimysium–Epimysium

Collagen fibers of all 3 layers come together at each end of muscle to form a tendon or aponeurosis.

Page 4: The Muscular System. bundle of muscle fibers muscle fiber (cell) myofibril sarcomere Gross Anatomy of Skeletal Muscle

Basic Basic FeaturesFeatures

Nerve & blood supply

Attachments– Origin

– Insertion

Page 5: The Muscular System. bundle of muscle fibers muscle fiber (cell) myofibril sarcomere Gross Anatomy of Skeletal Muscle

Muscle Fiber AnatomyMuscle Fiber Anatomy

Sarcolemma • Sarcoplasm • Myoglobin• Transverse tubules (T-tubules)

Myofibrils • Myofilaments

– Two types 1.Actin filaments (thin filaments)2.Myosin filaments (thick filaments)

Myofibril

SarcomeSarcomerere A band

Page 8: The Muscular System. bundle of muscle fibers muscle fiber (cell) myofibril sarcomere Gross Anatomy of Skeletal Muscle

SarcomeSarcomerere I bands

Page 9: The Muscular System. bundle of muscle fibers muscle fiber (cell) myofibril sarcomere Gross Anatomy of Skeletal Muscle

Z lines

SarcomeSarcomerere

Page 10: The Muscular System. bundle of muscle fibers muscle fiber (cell) myofibril sarcomere Gross Anatomy of Skeletal Muscle

Actin and Myosin FilamentsActin and Myosin Filaments

myosinactin

Page 11: The Muscular System. bundle of muscle fibers muscle fiber (cell) myofibril sarcomere Gross Anatomy of Skeletal Muscle

Myosin (Thick) FilamentMyosin (Thick) Filament

Page 12: The Muscular System. bundle of muscle fibers muscle fiber (cell) myofibril sarcomere Gross Anatomy of Skeletal Muscle

Actin (Thin) FilamentActin (Thin) Filament

Page 13: The Muscular System. bundle of muscle fibers muscle fiber (cell) myofibril sarcomere Gross Anatomy of Skeletal Muscle

axon

plasma membrane

myofibrils

sarcomere

T tubules

sarcoplasmic reticulum

Skeletal Muscle Tissue. Hierarchy Muscle (belly) → fasciculus → myofiber (cell) → myofibril → myofilaments

Prox1 maintains muscle structure and growth in the ... · of cardiac muscle during development and highlight how transcriptional misregulation of myofibril assembly may underlie cardiac

Muscle tissue - UNIVERSITY OF JORDAN …...Comparison of the 3 types of muscles Feature Skeletal Muscle Cardiac Muscle Smooth Muscle Sarcomere Yes Yes No Nuclei Multinucleated, peripherally

Bundle of fibers Muscle fiber (muscle cell) Myofibril Sarcomere

Signals from CNS are sent to skeletal muscles. Motor ...sraylman/physiology/8musclesland.pdf · Myofibril Sarcomere –the unit of contraction, made of thin (actin) and thick (myosin)

Muscle Physiology: The Actions of the Sarcomere

Muscle Tissue 2 Muscle Contrations. The Sliding Filament Theory The thin filaments (actin) slide over the thick causing the sarcomere to shorten. This

Notes: Skeletal Muscle Anatomy. (1) Levels of Organization Muscle (whole organ) Fascicle (portion of muscle) Muscle Fiber (single muscle cell) Myofibril

Biology - PapaCambridge · skeletal muscle and not smooth muscle [2] (b) The graph below shows the length of a sarcomere during muscle contraction. 0 1 Length of sarcomere/µm 2 3

Figure 46-19 Sarcomere Myofibril Dark bandLight band Relaxed Contracted Muscle tissue Bundle of muscle fibers (many cells) Muscles Muscle fiber (one cell)

THE INFLUENCE OF TEMPERATURE ON MUSCLE VELOCITY AND … · temperatures. Sarcomere length excursion and muscle shortening velocity, V, were determined from high-speed motion pictures

The Sarcomere Length-Tension Relation in Skeletal Muscle · The Sarcomere Length-Tension Relation in Skeletal Muscle H. E. D. J. TER KEURS, T. IWAZUMI, and G. H. POLLACK From the

wchsmsloan.pbworks.comwchsmsloan.pbworks.com/f/muscles.pdf · Endomysium O Epimysium Fascicle Fiber Myofilament Myofibril O Perimysium Sarco lemma Sarcomere ... first label the following

Determination of static and dynamic properties of muscle ...cg133bt2261/... · the sarcomeres, the sarcomere length, in the column. Based on the sarcomere results recorded across

Biomechanics of Skeletal Muscle · 2011. 1. 11. · myofibril, the amount of shortening that a myofibril and, ultimately, a muscle fiber can produce is the sum of the shortening in

What I would like to learn: What I know: Regardingibruce/courses/EE3BB3_2011/EE3BB… · Muscle contraction fibers (slow twitch, fast twitch) Myofibril structure (A band, sarcomere,

PRESENTATION DO’S AND Muscle contains proteins of many sizes ProteinkDaFunction titin3000center myosin in sarcomere dystrophin400anchoring to plasma

The Myofibril. Each muscle fiber (muscle cell) is made up of rod like myofibrils that run parallel to the length of the muscle fiber. They contain the

Cardiac Muscle and Heart Function Cardiac muscle fibers are striated – sarcomere is the functional unit Fibers are branched; connect to one another at

Warm-Up 1.Based on what you know about Latin root words, what do you think these terms refer to? Sarcomere Sarcoplasm Myofibril Epimysium Perimysium

STIFFNESS, FORCE, AND SARCOMERE SHORTENING · STIFFNESS, FORCE, AND SARCOMERE SHORTENING DURING A TWITCH IN FROG SEMITENDINOSUS MUSCLE BUNDLES MARK SCHOENBERG LaboratoryofPhysicalBiology,

Muscle I Spring 2010 Harvard University. Lecture Outline Functions of Skeletal Muscle Structural Hierarchy of Muscle Sarcomere Structure – Thick Filaments

Rate force generationin muscle: Correlationwithactomyosin ... › content › pnas › 83 › 10 › 3542.full.pdf · Servosystem-Controlled Sarcomere Length. Tocontrol the average

Label the diagram of the skeletal muscle with the … · Web viewLabel the diagram of the skeletal muscle with the following terms: muscle fiber myofibril epimysium perimysium endomysium

Changes in sarcomere lengths of the human vastus lateralis ...Changes in sarcomere lengths of the human vastus lateralis muscle with knee ﬂexion measured using in vivo microendoscopy

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

Assistant Professor of Medical Biochemistry€¦ · Biochemistry . Myofibril . Muscle Proteins . Myosin-thick filament structure . Role of ATP in contraction & relaxation . Role of

The Muscular System Support Systems Unit 2. Vocabulary- word parts My/o- muscle (myofibril is a muscle fiber) Ab- prefix, away (abduction) Ad- prefix,

Body Sculpting |AXXApublishing · The components of the muscles include the muscles, fibers, myofibril, actin, myosin, and sarcomere. Again, each part of the muscles plays a part

Motor mechanisms. Keywords (reading p. 1080- 1086) Bundle, fiber, myofibril, sarcomere Z-line, thick filament, thin filament Actin, myosin, sliding filament

Sarcomere assembly in C. elegans musclewormbook.org/chapters/ · 2013-06-28 · attachment plaques at muscle-muscle junctions are most similar to dense bodies, and anchor the actin

Muscle tissue - Pre-Med - JU Medicine · Comparison of the 3 types of muscles Feature Skeletal Muscle Cardiac Muscle Smooth Muscle Sarcomere Yes Yes No Nuclei Multinucleated, peripherally

DR SHAHABkoracademy.com/sites/default/files/inline-files...A myofibril (also known as a muscle fibril) is a basic rod-like unit of a muscle cell. Muscles are composed of tubular cells

Sarcomere mechanics in striated muscles: from molecules to …web.as.uky.edu/Biology/faculty/cooper/Muscle class-UK... · 2017. 3. 3. · REVIEW Sarcomere mechanics in striated muscles:

Skeletal Muscle : Structurezmchdahod.org/pdf/college/2SkeletalMusclestructure30102018Physiology.pdf · Myosin (Thick) 2. Actin (Thin) 3. Sarcomere 2 . Short notes (4 marks) 1. Sliding