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Mapa Mental
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mawbyharriet
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University Musculoskeletal System Mapa Mental sobre Musculoskeletal System, creado por mawbyharriet el 03/07/2013.
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musculoskeletal system
musculoskeletal system
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142836
mind_map
2017-01-03T00:31:13Z
Musculoskeletal System
Functions of muscular tissue
Types of muscular tissue
Describe the structure
Muscles used to administer intramusclular injections
List the components and functions of the skeletal
system
Identify the 5 types of
bone
microscopic and macroscopic bone structure
Muscle
Composed of cells that can contract to produce movement
Cells are also called muscle fibres
Around 650 muscles in the body - half of body weight
Movement is either voluntary or
involuntary
Producing body
movement
Stalbalising body positions
Storing and moving substances within the body
Generating
heat
Cardiac - involuntary
Smooth (visceral)
Skeletal (striated)
Endocardium, myocardium, pericardium. Exclusive to the heart.
Contracts to squeeze blood out of the heart. Does not tire.
Found in internal muscles. Functions include: - peristalsis in
digestive system - goosebumps -involuntary
Attached to the skeletal by tendons. Functions: -
movement, posture, heat production, voluntary.
Cardiac
Striations
muscle fibres are short and intercalated discs.
Network of autorythmic fibres
Smooth
unstriated
Contains single nucleus
No sheath
2 Types: Visceral (single unit) and Multi-unit.
Skeletal
Cylindrical fibres
Multi-nucleated
Striated
Complex
Major muscles groups
BACK: - Trapezius - Lattissmus Dorsi
CHEST: - Pectoralis major -
External oblique
ABDOMEN: - Rectus
abdominis - External oblique
LEG: - Gluteus Maximus - Vastus
lateralis - Rectus femoris -
Gastronemuis
Arm: - Deltoid -Triceps brachii - Biceps brachii - Brachialis
Deltoid (Shoulder)
Vastus lateralis and rectus femoral (thigh)
Dorsogluteal (bottom)
Ventrogluteal (side of bottom)
Axial Skeleton - Central
Appendicular Skeleton - girdles and appendages
FUNCTIONS:
Provides a framework
Movement
Mineral storage
Protection
Homeostasis
Long (humerus)
Short (trapazoid)
Irregular (vertebrae)
Flat (Sternum)
Sesamoid (patella)
OSTEOGENIC CELLS ( -genic = producing)
Unspecialised stem cell, only bone cells that undergo
cell division. Found: inner portion of periosteum,
endosteum, canals within bone carrying blood vessels.
OSTEOBLASTS ( -blasts = buds or sprouts)
Bone building cells. Functions: >Synethesise and
secrete collagen fibres and other componenets of
extracellular matrix. >Initiate calcification
OSTEOCYTES ( - clasts = break)
Large cells formed from fusion - up to 50 monocytes. > Found in endosteum > Resorption
Bone growth and remodeling
BONE GROWTH: throughout childhood and adolescence
- in thickness - in length
BONE REMODELING: Continual renewal throughout life. Replacement of old bone
tissue by new involves: BONE RESORPTION: Removal of minerals and collagen by
osteoclasts. BONE DEPOSITION: Addition of minerals and collagen by osteoblasts.
Factors affecting bone growth and remodeling: > Vitamins > Minerals > Hormones > Exercise
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142836
mind_map
2017-01-03T00:31:13Z
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