Lecture#3 Muscle and structure of Skeletal Muscle

Leiden - Animation Digestive Tract - no labels | AnatomyTOOL.

Light Blue Stripe Painted Watercolor On Stock Illustration 1309302361 | Shutterstock.

Muscles attached with bones of Skeleton. Light Blue Stripe Painted Watercolor On Stock Illustration 1309302361 | Shutterstock.

involuntary, non striated muscles found in the walls of internal organs that control slow, sustained movements. Smooth muscles are involuntary because their contraction and relaxation are not under conscious (voluntary) control. Their movement is controlled by: the autonomic nervous system (sympathetic and parasympathetic nerves), hormones (for example, adrenaline, oxytocin), and local factors like stretch, ions, and chemicals..

Muscles only found in walls of heart. Light Blue Stripe Painted Watercolor On Stock Illustration 1309302361 | Shutterstock.

Muscles are present in all animals Muscles produce movement Mosquitoes fly using rapid muscle contraction Earthworms move by muscle-driven body force.

Comparison of three types of muscle tissues Property Skeletal Muscle Smooth Muscles Cardiac Muscles Appearance Regular striped Un-striped Irregular striped Cell shape Spindle or cylindrical Spindle Branched Number of nuclei Many per cell One per cell One per cell Voluntary control Have voluntary control Usually, no voluntary control No voluntary control.

Structure of Skeletal Muscles. Understanding the primary functions of the muscular system - Training Station.

[Audio] Endomysium → surrounds each individual muscle fibre Perimysium → surrounds a bundle of muscle fibres (fascicle) Epimysium → surrounds the entire muscle A tendon is a strong, non elastic connective tissue that connects a muscle to a bone and helps in movement. Tendons connect muscles to bones, whereas ligaments connect bones to bones and provide joint stability. Perimysium is a connective tissue sheath around a fascicle, whereas sarcolemma is the plasma membrane of a muscle fibre..

Bone. Light Blue Stripe Painted Watercolor On Stock Illustration 1309302361 | Shutterstock.

Muscle epimysium Muscle Fiber Bundle Perimysium Endomysium Muscle Myofibril Fiber hick & Thin Myofilaments.

Muscle fibre (Cell). Light Blue Stripe Painted Watercolor On Stock Illustration 1309302361 | Shutterstock.

Cardiac Physiology and Anatomy → Muscle Marvels: Skeletal vs. Cardiac – Contrasting Wonders - RESUS.ca.

Cardiac Physiology and Anatomy → Muscle Marvels: Skeletal vs. Cardiac – Contrasting Wonders - RESUS.ca.

Z-Line - AnatomyZone. Light Blue Stripe Painted Watercolor On Stock Illustration 1309302361 | Shutterstock.

[Audio] Why it is called H-zone: Named after Victor Hensen, a German physiologist. The letter “H” comes from Hensen, not from “hele” or any other term. The Z-line is a dark, thin line found at both ends of a sarcomere in striated muscle. Z-line: It marks the boundary of a sarcomere. Made of protein filaments (mainly actinin)..

Perimysium Endomysium Muscle Epimysium Muscle Fiber Bundle Muscle Myofibril Fiber hick & Thin Myofilaments.

[Audio] Myosin is a thick filament protein composed of two heavy and four light chains, possessing ATPase activity that converts chemical energy of A-T-P into mechanical force during muscle contraction..

Thin Filament Activation by MyBP-C | Warshaw Laboratory – University of Vermont.

Troponin Tropomyosin.