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Anatomy Lecture 8

Muscle Tissue

QuestionAnswer
Basic properties of muscle tissue Excitability, Contractility, Elasticity, Extensibility
Cardiac Muscle Shape Y shaped or branched fibers
Cardiac Muscle Location Heart mocardium
Cardiac Muscle # Nuclei Uni or bi nucleated
Cardiac Muscle Control Involuntary
Smooth Muscle Location Walls of visceral organs
Smooth Muscle Shape fusiform
Smooth Muscle Striations Not striated
Smooth Muscle # nuclei uninucleate
Skeletal Muscle location connected to the skeleton
Skeletal Muscle cell shape fiber-like and cylindrical
Skeletal Muscle # nuclei multinucleated
Skeletal Muscle striations striated
Muscle Type 1 Skeletal Muscle
Muscle Type 2 Cardiac Muscle
Muscle Type 3 Smooth Muscle
Excitability nerve can go to a muscle cell and excite it
Contractility smooth muscle cell can shorten in length
Elasticity after it lengthens it goes back to its original position
Extensibility ability to stretch
Cardiac Muscle Striations Striated 2
Cardiac Muscle Special Features Intercalated discs, auto-rhythmic
Smooth muscle control involuntary
Smooth muscle special features fatigue-resistant
skeletal muscle control voluntary
Skeletal muscle special features innervated at the neuromuscular junction, vascular
Functions of skeletal muscle pt 1 movement, maintenance of posture, temperature reglation
Functions of skeletal muscle pt 2 storage of materials, support abdominal organs, joint stabilization
Skeletal Muscle build 1 Endomysium
skeletal muscle build 2 perimysium
skeletal muscle build 3 epimysium
skeletal muscle build 4 deep fascia
skeletal muscle build 5 tendon
Flat tendons are called... aponeuroses
origin of a muscle is where... less movable attachment site
insertion of a muscle is where... more movable attachment site
Muscle Structure: MUSCLE GROUP Connective Tissue Covering: DEEP FASCIA
MS: MUSCLE CTC: EPIMYSIUM
MS: FASCICLE ctc: PERIMYSIUM
ms: MYOFIBER ctc: ENDOMYSIUM
ms: THICK AND THIN FILAMENTS ctc: NONE
ms: MYOFIBRIL ctc: NONE
ms: MYOSIN AND ACTIN PROTEINS ctc: NONE
Created by: zebhanlaw
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