Muscular SystemJessica Yeh
Eleanor Yan
StructuresSkeletal muscles made of myofiberMyofilaments are threadlike strands that
make up musclesDifferent types of filaments in muscle
strands: thick and thinThick filaments made of protein: myosinThin filaments made of protein: actinSeparate filaments pull against each other
and create a contraction for muscles to function
Types of Muscle TissueSmooth Muscles: Controlled by brain
and bodyEx. Muscle behind our eyes that keep them
focused
Skeletal Muscles: We can control this muscles
Ex. Abdominals
Cardiac Muscles: InvoluntaryEx. Heart
Muscles Smooth Skeletal
Cardiac
Muscular Conditions and Diseases
MUSCULAR DYSTROPHYInherited DisorderPatient develops muscle weakness and loss in
muscle tissueSymptoms: lack of motor skills, eye dropping,
droolingIf left untreated, patient lose ability use
musclesMuscular dystrophy does not have cure,
doctors use physical therapy to slow the progression of the disease
MUSCULAR DYSTROPHY
MYOSITISInflammation skeletal musclesCaused by immune system attacking healthy
muscle tissueSymptoms: rashes, difficulty in speech and
motor skillsNo cure, but medications and physical
therapy lessen the effectsMedications will prevent the immune system
from attacking the healthy tissue
COMPARTMENT SYNDROMEPressure in muscles build, causes decrease in
blood flowNutrients and oxygen cannot reach certain
cells if blood doesn’t flowSyndrome caused by fractures or badly
bruised musclesSymptoms: numbness, difficulty in muscle
movement, burning sensation
COMPARTMENT SYNDROME
MYOSITIS
Strengths and Weakness
StrengthsBody stability: keeps us from falling down
quicklyProvides heat: keeps our body warm and at
the right temperatureMovement: Allows body to move like walk,
chew, blinkWe give our body nutrition to stay healthyAllows body to perform actions that we would
die without
Eating Healthy Movement
WeaknessesIf muscle is severely damaged, surgery and
physical therapy must be usedIf injured, would prevent movement and
stability in muscleCan also be damaged to a point of misuseFractures and bruises can also lead to
dangerous conditions Muscles help maintain homeostasis but only
to certain degrees
Fracture Physical therapy
Healthy Muscular SystemMaintain through exercise, healthy diets,
protecting muscles from injuryExercise: helps muscles stay strong and
healthy, lowers risk of developing weaknessDiet: Proteins and fruits supply muscles with
nutrientsPreventing injuries: warm up before exercise,
protective gear, drink lots of water
Thank you for listening!