La théorie de la contraction par glissement des filaments

Aug 27, 2014

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La théorie de la contraction par glissement des filaments. Hugh Huxley 1954. Glissement des filaments.

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La théorie de la contraction par glissement des filaments

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La théorie de la contraction par glissement des filaments Hugh Huxley 1954
Glissement des filaments

Magnetic Flux Transport and the Hemispheric Pattern of Filaments

Magnetic Flux Transport and the Hemispheric Pattern of Filaments. Newly developed global simulations of the coronal magnetic field over multiple rotations.No resetting of the field to potential at each rotation.Used to test a theory for the hemispheric pattern of filaments against observations.. BACKGROUND.

396 views • 18 slides

Lecture 8: Excitation-Contraction Coupling

Lecture 8: Excitation-Contraction Coupling. Summary From Last Lecture. Summary: Contraction Cycle. Ca 2+ is a Trigger For Contraction. F12-9. Troponin and tropomyosin (associated with actin filaments) prevent myosin heads from compleating the power stroke; like a safety latch on a gun.

1.01k views • 25 slides

CHAPTER 16 THE CYTOSKELETON

CHAPTER 16 THE CYTOSKELETON. THE SELF-ASSEMBLY AND DYNAMIC STRUCTURE OF CYTOSKELETAL FILAMENTS HOW CELLS REGULATE THEIR CYTOSKELETAL FILAMENTS MOLECULAR MOTORS THE CYTOSKELETON AND CELL BEHAVIOR. THE SELF-ASSEMBLY AND DYNAMIC STRUCTURE OF CYTOSKELETAL FILAMENTS.

2.23k views • 48 slides

Muscle Contraction

Muscle Contraction. Andy Howard Introductory Biochemistry 2 December 2008. Chemistry of muscle contraction. The most impressive movement phenomenon in mesoscopic organisms is muscle movement. It does have a biochemical basis, which we’ll explore today. Skeletal muscle physiology

2.28k views • 46 slides

Lecture 9b.

Lecture 9b. Muscle Contraction. Topics. The excitation part of excitation –contraction coupling: events at the neuromuscular junction The contraction part of excitation –contraction coupling: the contraction cycle and ATP Tension and motor units Muscle metabolism and fiber types.

1.23k views • 82 slides

Muscle Contraction and Relaxation

Muscle Contraction and Relaxation. Important Muscle Fibres:. Thin Filaments – Actin Thick Filaments - Myosin. Contraction:. Myosin grabs onto the actin filaments Forms “CROSSBRIDGES ” ATP (energy) and Ca ++ ions are needed for contraction. Actin Fibre. Myosin Fibre. Relaxation:.

1k views • 23 slides

Got Filaments?..... Think

Got Filaments?..... Think. systemic lupus erythematosus (SLE) ( esp for young, black female with malar rash): “Any joint pain? other autoimmune diseases: rheumatoid arthritis (RA). Reasons why auto immune disease is important to O.D.’s. 3 rd most prevalent diseases after? cancer

438 views • 31 slides

Muscle Contraction

Muscle Contraction The role of skeletal muscle is to aid in movement and maintain posture. In order to do this it must contract. Twitch : a brief mechanical contraction of a single muscle fiber produced by a single action potential at low frequency stimulation is known as single twitch.

1.29k views • 17 slides

Ena/VASP and fascin collaborate in the self-organization of actin filaments

Ena/VASP and fascin collaborate in the self-organization of actin filaments. Jonathan Winkelman Mini Retreat, April 10 th , 2014 Department of Molecular Genetics and Cell Biology. Actin monomers assemble into polar filaments. Barbed end (B). Pointed end (P). In vitro : TIRF microscopy.

470 views • 32 slides

Muscle Structure and Function

Human Physiology Unit. Muscle Structure and Function. Muscle Function. Muscles are for: contraction for locomotion and skeletal movement contraction for propulsion contraction for pressure regulation. Types of Human Muscle.

1.44k views • 27 slides

FESEM-BSE Image by Jianyi Jiang, ASC, NHMFL

Polished transverse cross- section of a Bi-2212 round wire with 7 bundles of 27 filaments manufactured by OST . This wire was heat treated at 100 atm over-pressure to densify the filaments.

263 views • 1 slides

Anatomy & Physiology I Unit Ten

Anatomy & Physiology I Unit Ten. Muscle Characteristics. Contractility. Excitability. Conductivity. Extensibility. Elasticity. Muscle Characteristics. The ability to contract. Contraction results in movement. Contraction occurs due to sliding filaments. Muscle Characteristics.

492 views • 38 slides

Object Orie’d Data Analysis, Last Time

Object Orie’d Data Analysis, Last Time. Reviewed Clustering 2 means Cluster Index SigClust When are clusters really there ? Q-Q Plots For assessing Goodness of Fit Very useful for Gaussian Fit Compare to 45 o line Assess variability with Q-Q Envelope Plot. Q-Q plots.

820 views • 63 slides

Object Orie’d Data Analysis, Last Time

Object Orie’d Data Analysis, Last Time. Cornea Data Images (on the disk) as data objects Zernike basis representations Outliers in PCA (have major influence ) Robust PCA (downweight outliers) Eigen-analysis of robust covariance matrix Projection Pursuit Spherical PCA. Cornea Data.

701 views • 54 slides

Object Orie’d Data Analysis, Last Time

Object Orie’d Data Analysis, Last Time. Statistical Smoothing Histograms – Density Estimation Scatterplot Smoothing – Nonpar. Regression Si Z er Analysis Replaces bandwidth selection Scale Space Statistical Inference: Which bumps are “ really there ” ? Visualization.

826 views • 67 slides

III - Contraction musculaire

III - Contraction musculaire. Importance de la contraction musculaire. Forme de mouvement la mieux connue Volontaire : vertébrés Courir, marcher, nager, voler = Contraction de muscles squelettiques sur des os Involontaire Cœur Péristaltisme intestinal

739 views • 37 slides

Automated detection of filaments on full disk H  images

Automated detection of filaments on full disk H  images. EGSO WP5. Nicolas Fuller and Jean Aboudarham Meudon Observatory / LESIA October 2003. Automated Detection of Filaments / NF & JA 2003. Automated Detection of Filaments / NF & JA 2003. Cleaning Process. Darkening. Dust lines.

286 views • 15 slides

Intro summary

The cytoskeleon is built of long, non-covalent protein polymers that self-assemble in the cytoplasm Some of these polymers are polar (actin, microtubules), others are non-polar (intermediate filaments); polarity is central to the biology of polar filaments

836 views • 54 slides

Cytoskeleton System

Chapter 9. Cytoskeleton System. 1. Introduction. A. Conception of Cytoskeleton (Narrow sense) A complex network of interconnected microfilaments, microtubules and intermediate filaments that extends throughout the cytosol. Microbubules. Microfilamemts. Intermediate filaments.

1.23k views • 70 slides

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La théorie de la contraction par glissement des filaments

La théorie de la contraction par glissement des filaments

Presentation Transcript

Magnetic Flux Transport and the Hemispheric Pattern of Filaments

Lecture 8: Excitation-Contraction Coupling

CHAPTER 16 THE CYTOSKELETON

Muscle Contraction

Lecture 9b.

Muscle Contraction and Relaxation

Got Filaments?..... Think

Muscle Contraction

Ena/VASP and fascin collaborate in the self-organization of actin filaments

Muscle Structure and Function

FESEM-BSE Image by Jianyi Jiang, ASC, NHMFL

Anatomy &amp; Physiology I Unit Ten

Object Orie’d Data Analysis, Last Time

Object Orie’d Data Analysis, Last Time

Object Orie’d Data Analysis, Last Time

III - Contraction musculaire

Automated detection of filaments on full disk H  images

Intro summary

Cytoskeleton System

Anatomy & Physiology I Unit Ten