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Muscular System Arianna Reyes P.1 - Coggle Diagram
Muscular System Arianna Reyes P.1
Major Functions
Stabilize Joints
Maintains posture
Generate Heat
Maintains temperature to continue homeostasis
Maintain Posture
The body's position
Produce Movement
Responsible for all motion such as walking and digestion
3 Types of Muscles and their Functions
Cardiac
An involuntary action through the blood flow
Smooth
An involuntary action which transfers substances
Skeletal
Creates movement by pulling of tendons and contractions
All Skeletal Muscles
Body Muscles
Posterior
-Calcaneal tendon (achilies)rfhvreiufvhiwurhfruiwhcwiuhvuiuewf-Fibularis longus
-Soleus
-Gastrocnemius
-Semimembraneous
-Semiiendinosus
-Biceps femorus
-Gluteus maximus
-Lattissmus darsi
-Flexor carpi ulnaris
-Extensor digitorum
-Brachioradilus
-Extensor carpi radialis longus
-Treiceps brachi
-rhomboid major
-Tares major
-Deltoid
-Trapezus
-Sternocleidomastoid
Anterior
-Extensor digitorium longusbgtgbsrtrhbtrhbtrhbtrhbrthrtrhthrhrthrf-Tibialis anterior
-Fibularis longus
-Soleus
-Gastrochemius
-Vastus laiserlies
-Rectus femoris
-Gracilis
-Adductor longus
-Sartorious
-Rectus abdominus
-External oblique
-Serratius anterior
-Palmanis longus
-Flexor carpi brachialis
-Branchioradialis
-Pectoralis major
-Deltoid
-Trapezius
-Sternocleidomastoid
Face Muscles
-Frontalis
-Platysma
-Orbicularis
-Zygomticus
-Masseter
-Temporalis
Sacromere
Thin filaments attach to z-lines and thick filoments are found in the middle of the sacromere. Sacroplasmic reticulum: Network tube that is parallel to myofilaments
-T-tubule: Perpendicular tubes to filaments
-Sacrolemma: Membrane which surrounds muscle fiber
-ATP is created through the mitochondria
Neuromuscular Junction
Connection which is bound by motor neurons and corresponding muscle fibers.
-ACh receptors
-Junctional folds
-Synaptic vesicles
-Synaptic cleft
-Motor end plate
-Axon
Sliding Filament Theory
-Motor neurons transmit AChkjbdbfsubvfiubsiuvbsbsif-Transmission travels to the T-tubules and results in caclium being released from the sacroplasmis reticulum
-The calcium connects to actin, which changes it shape
-This shape change allows myosin heads to begin forming cross bridges between the myosin and actin
-"Power strokes" are created using ATP between the filaments
-The actin begin to shorten
-Filaments then return to their resting state and everything is repeated once more
Action Potential
Electrical signals (AP) which is carried by motor neurons
Muscle Coverings
Epimysium
Dense irregular CT blankets the entire skeletal muscle
Tendons
Attachments to bones with 2 or more connections
Perimysium
Fibrous CT penetrates muscles which split into fascicles, this also surrounds the fascicles
Fascia
Covers entire muscle
Endomysium
Areolar CT splits fascicles to muscle fibers and surrounds them
Disorders
Duchenne Muscular Dystrophy
A disease most commonly found in boys and passed through inheritance which progressively weakens the muscle.
Rigor Mortis
Muscles stiffen 3-4 hours after death.
Myasthenia Gravis
Commonly related to unresponsive muscles and general muscle weakness.